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63results about How to "Improve electrochemical reaction efficiency" patented technology
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Standby electrical power system of fuel cell for communication
InactiveCN101505092AKeep aliveIncrease profitBatteries circuit arrangementsEfficient power electronics conversionElectrochemical responseEngineering
The invention relates to a communication fuel cell spare power supply system, which comprises a hydrogen generation and storage unit, a fuel cell unit, a DC / DC unit, an output unit, an electric control unit, a routing inspection unit, a monitoring unit and a communication unit, and is characterized in that: the hydrogen generation and storage unit generates hydrogen by using solar or wind energy and releases the hydrogen by absorbing the heat of the fuel cell unit; the fuel cell unit generates direct current electric energy and heat by the electrochemical reaction of the hydrogen and oxygen; the DC / DC unit adjusts and boosts the direct current electric energy and then supplies the direct current electric energy to the output unit; the output unit supplies power to a load when commercial power fails; the electric control unit acquires various data and sends control information to all units; the routing inspection unit acquires all individual cell voltage values for transmission; the monitoring unit displays various parameters and working states and realizes human-computer interaction; and the communication unit performs short-range and long-range communication and monitoring. The power supply system is clean, high efficient, reliable and applicable to various communication spare power supplies.
Owner:武汉海亿新能源科技有限公司
Electrochemical machining method and device for pulsating flow field tube electrode
ActiveCN102198549AReduce the "holding effect"Reduce the "squeeze effect"Machining working media supply/regenerationVoltage pulseElectrolysis
The invention relates to an electrochemical machining method and an electrochemical machining device for a pulsating flow field tube electrode, and belongs to the technical field of electrochemical machining. The method comprises the following steps of: 1, adjusting the flow and the pressure by controlling an action of a spool of a servo valve (9) by a pressure servo execution module (4), and outputting a pulsating electrolyte solution to an electrochemical machining area; 2, modulating a control instruction phase by using a control system of an electrochemical machining machine tool according to a pressure and voltage feedback signal, so that the pressure of the machining area is matched with the voltage pulse rhythm; and 3, dynamically adjusting a feeding speed and the machining voltage by using the control system of the electrochemical machining machine tool so as to machine a hole with a variable section in regular change. The method and the device provided by the invention have important meaning for increasing the flocculent product discharge rate and the machining stability of the electrochemical machining of a neutral saline solution deep hole tube electrode.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Composite material with hollow graphene spheres loaded with nanometer tin disulfide and method for preparing composite material
ActiveCN105621355ALow costSimple preparation processMaterial nanotechnologyCell electrodesPorous grapheneLithium
The invention discloses a composite material with hollow graphene spheres loaded with nanometer tin disulfide. The composite material is characterized in that the hollow graphene spheres with sub-micron sizes are used as carriers, tin disulfide nanometer particles are loaded on the inner walls and the outer walls of the hollow graphene spheres, and the sizes of the tin disulfide nanometer particles grown on the surfaces of the hollow graphene spheres range from 10 nm to 40 nm. A method for preparing the composite material includes steps of a, synthesizing cationic polystyrene spheres; b, synthesizing the hollow graphene spheres; c, loading the tin disulfide to obtain the composite material with the hollow graphene spheres loaded with the nanometer tin disulfide. The composite material and the method have the advantages that the composite material is a carbon material with a two-dimensional structure, the tin disulfide with an expanded volume can be accommodated in charging and discharging procedures, and the electric conductivity and the structural stability of electrode materials can be improved; the electric conductivity and the ion transport performance of the materials can be improved by porous graphene structures, and the composite material is favorable for embedding lithium ions in the materials and releasing the lithium ions from the materials.
Owner:SHANGHAI UNIV
Proton exchange membrane fuel cell bipolar plate based on labyrinth-baffle-plate-structured flow field
ActiveCN106816610AEnhanced forced convectionImprove drainage capacityFuel cell heat exchangeWater management in fuel cellsElectrochemical responseWater discharge
The invention discloses a proton exchange membrane fuel cell bipolar plate based on a labyrinth-baffle-plate-structured flow field. The proton exchange membrane fuel cell bipolar plate includes a rectangular gas flow field (1), the reaction gas inlet (11) and the reaction gas outlet (12) of which are located at two ends of one diagonal of the gas flow field (1) in diagonal distribution. A plurality of ridges (13) with the same height and a plurality of baffle plates (15) are distributed in the gas flow field (1). The gas flow field (1) is internally divided by the ridges (13) into to a plurality of flow channels (14) with the same width, and all the baffle plates (15) arranged along the other diagonal of the gas flow field (1) and the ridges (13) located on the diagonal form a flow channel dam along the diagonal. The labyrinth-baffle-plate-structured flow field allows forced convection and water discharge capacity of the reaction gas to be improved, the gas is made to be uniformly distributed, and the electrochemical reaction efficiency of the cell is increased. The electric current density becomes uniform, and the electrochemical performance of the whole fuel cell is improved.
Owner:NANJING UNIV OF TECH
Fabricating method of InGaN (Indium-Gallium-Nitrogen) semiconductor photoelectrode
InactiveCN101922015AReduce reflectionIncrease the effective contact areaElectrodesElectrochemical responseIndium
The invention discloses a fabricating method of an InGaN (Indium-Gallium-Nitrogen) semiconductor photoelectrode, which comprises the following steps of: 1, taking a substrate (21); 2, epitaxially growing an InGaN layer (22) on the substrate (21); 3, fabricating a nanometer microstructure layer (31) on the InGaN layer (22); and 4, epitaxially growing or depositing an n-shaped or p-shaped surface layer (41) on the InGaN nanometer microstructure layer (31). The invention can be used for introducing the nanometer structure to the surface of the InGaN semiconductor photoelectrode, thereby greatly reducing the reflection of the surface of the photoelectrode on light, increasing the effective contact area of the photoelectrode and electrolyte, enhancing the efficiency of electrochemical reaction and furthest enhancing the conversion efficiency of the InGaN semiconductor photoelectrode on sunlight.
Owner:INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
Gas diffusion electrode and preparation and application thereof
ActiveCN105576264AEasy to prepareEasy to implementCell electrodesConductive polymerMicroscopic scale
A gas diffusion electrode includes a gas diffusion layer and a catalytic layer; the catalytic layer is composed of conductive polymer nanorods and a catalyst attached onto the conductive polymer nanorods; the conductive polymer nanorods in the catalytic layer is vertically grown on the surface of carbon powder particles of a microporous layer in situ to form a sea urchin-shaped structure in microscopic scale; the catalyst is attached onto the surface of the conductive polymer nanorods. Preparation of the gas diffusion electrode includes the steps: (a) preparation of the gas diffusion layer; (b) preparation of the conductive polymer nanorods; and (c) preparation of the catalytic layer. Compared with the prior art, the gas diffusion electrode has a certain network structure formed while the catalyst dispersion effect and the utilization rate are improved; compared with an array ordering structure completely vertical to a basal layer, the network structure enables the collision frequency of gas molecules and the catalyst to be increased; the MEA assembled by the gas diffusion electrode has the battery performance improved when having the same catalyst loading amount. The preparation method is simple and easy to implement and is suitable for mass production. The gas diffusion electrode produced by batch has relatively good consistency.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Medium-high-voltage fuel cell engine
PendingCN107331881ASecurity supplyImprove electrochemical reaction efficiencyFuel cell heat exchangeReactant parameters controlAir filterIntercooler
The invention relates to a medium-high-voltage fuel cell engine. The medium-high-voltage fuel cell engine comprises a hydrogen supply subsystem, an air supply subsystem, a temperature control subsystem and an electric power control subsystem which are separately connected with a fuel cell pile, wherein the hydrogen supply subsystem comprises a hydrogen bottle, a combined bottle valve, an overflow valve, a pressure adjusting valve, a hydrogen inlet electromagnetic valve and a hydrogen circulating pump which are successively connected with one another; the air supply subsystem comprises an air filter, an air compressor, an intercooler and a humidifier which are successively connected with one another; and the temperature control subsystem comprises a deionization filter, a heater and a heat radiator which are arranged side by side, a temperature control three-way valve is respectively arranged among the fuel cell pile, the heater and the heat radiator, and the air supply subsystem is also provided with an auxiliary water tank. The medium-high-voltage fuel cell engine is reasonable in structure, convenient to manufacture, safe and efficient.
Owner:杭州紫港科技有限公司
Fuel battery flow field plate
The invention provide a fuel battery flow field plate which comprises a bottom flow field plate, a middle flow field plate and a top flow field plate, wherein two adjacent flow field plates are bonded by a sealant; S-shaped through grooves which are corresponding with each other in shape and size are formed in the middles of the bottom flow field plate and the middle flow field plate; the sections of the through grooves of the bottom flow field plate and the middle flow field plate are different in shape; the bottom flow field plate is made of a hydrophilic material, the middle flow field plate is made of a hydrophobic material; and the top flow field plate is made of an air-liquid separation film. The fuel battery flow field plate disclosed by the invention is simple in structure, stable to work, and reliable in performance; and the air-liquid splitting-phase conveying of fuel can be realized, so that CO2 bubbles in reaction can be discharged in real time, and the electrochemical reaction efficiency can be improved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Proton exchange membrane fuel cell structure applicable to high temperature operation
InactiveCN101212057AReduce volumeSimple structureCell electrodesSolid electrolyte fuel cellsThin metalProton
The invention relates to a fuel cell, in particular a structure of the fuel cell having a proton exchange membrane applicable to high temperature operation, which comprises a fuel flow field, a CCM, an oxidizer flow field, and thin metal separating boards arranged on two sides of the oxidizer flow field. Inner sides of the thin metal separating boards are provided with poriferous layers of conductive material which are taken as flow fields and diffusing layers. The structure of the invention can simplify the structure of the fuel cell and greatly reduce the size.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Electrochemical-biological fluidized bed reactor and wastewater treatment method
InactiveCN104860397AIncrease chance of contactReduce energy wasteWater contaminantsTreatment with aerobic and anaerobic processesFluidized bedNitrogen
The invention discloses an electrochemical-biological fluidized bed reactor and a wastewater treatment method. The reactor comprises an anaerobic fluidized bed and an aerobic fluidized bed. The lower portions of the anaerobic fluidized bed and the aerobic fluidized bed are connected through a first electrode group. The upper portions of the anaerobic fluidized bed and the aerobic fluidized bed are connected through a second electrode group. A first water inlet and a first water outlet are arranged in the anaerobic fluidized bed, a second water inlet and a second water outlet are arranged in the aerobic fluidized bed, and the first water outlet and the second water outlet are connected through a wastewater pipeline. An aeration head is arranged at the bottom of the aerobic fluidized bed. The wastewater treatment method includes maintaining the temperature in the anaerobic fluidized bed and the aerobic fluidized bed to be in the range of 18-38 DEG C, adding electrolyte into organic wastewater, and sequentially delivering the wastewater into the anaerobic fluidized bed and the aerobic fluidized bed for treatment. By means of the reactor and the wastewater treatment method, biological degradation is introduced in a conventional electrochemical system to achieve the oxidation-reduction where electrochemistry and biological degradation are coupled. The treatment speed is greatly increased, and the treatment effect of nitrogen-rich organic wastewater is improved.
Owner:SOUTH CHINA UNIV OF TECH
Methanol reforming fuel cell heat utilization method based on major cycle and minor cycle
PendingCN109742424AImprove electrochemical reaction efficiencyIncrease power generationFuel cellsFuel cellsHeat losses
The invention discloses a methanol reforming fuel cell heat utilization method based on major cycle and minor cycle. A cycle system corresponding to the methanol reforming fuel cell heat utilization method is composed of a cycle power device, a heating device, an electric pile runner, an electronic thermostat device, a radiating device and a cycle medium. And the method is relates to the technicalfield of the fuel cell. The methanol reforming fuel cell heat utilization method based on major cycle and minor cycle can add the electronic thermostat device in the cycle system, so that the entirecycle system is divided into two cycle systems, the path and time of each cycle period can be shortened, the heating speed is improved, the path and the time of the period cycle are reduced, and the unnecessary heat loss is avoided at the same time; the preheating efficiency is improved when the power consumption is reduced, the electric pile is faster in temperature rise rate and shorter in generation waiting time, and the waiting time of a user is reduced.
Owner:CHINA HYDROGEN NEW ENERGY TECH CO
Ruthenium sulfide composite material and preparation method and applications thereof
The invention discloses a ruthenium sulfide composite material, which comprises a conductive substrate material and ruthenium sulfide particles growing on the conductive substrate material. The invention also discloses a preparation method and an application of the ruthenium sulfide composite material as a cathode material in water electrolysis to prepare hydrogen.
Owner:BEIJING UNIV OF CHEM TECH
Metal bipolar plate with graphene conducting layer and manufacturing method thereof
ActiveCN109546158AImprove conductivityImprove thermal conductivityCell electrodesThin metalFuel cells
The invention relates to a metal bipolar plate with a graphene conducting layer and a manufacturing method thereof. The metal bipolar plate is arranged in a fuel cell. The metal bipolar plate comprises two metal flow field plates. The two metal flow field plates are respectively an anode side metal flow field plate and a cathode side metal flow field plate. Each of the metal flow field plates is respectively a first surface and a second surface. The first surface and the second surface are respectively provided with a plurality of diversion grooves. Graphene layers are disposed on the first surface and the second surface. The anode side metal flow field plate and the cathode side metal flow field plate are combined by welding or riveting. The invention discloses a light and thin metal bipolar plate with a graphene layer and a manufacturing method thereof, and the metal bipolar plate has good ductility, corrosion resistance, electrical conductivity and high thermal conductivity.
Owner:王琛茜
Fluid recycling apparatus and fuel cell system having the fluid recycling apparatus
InactiveUS20090208790A1Improved orientation free performanceImprove electrochemical reaction efficiencyFuel cell heat exchangePump componentsElectricityFuel cells
An improved fluid recycling apparatus and a fuel cell system comprising the same effectively recycle moisture contained in fluid circulating in a fuel cell system and operate independent of orientation. The fluid recycling apparatus includes an electric penetration pump and a gas / liquid separation unit. The electric penetration pump has first and second electrodes and an electric penetration layer interposed between the first and second electrodes. The electric penetration pump directs a liquefied fluid through an electric fluid passage formed in the electric penetration layer by applying a voltage between the first electrode and the second electrode. The gas / liquid separation unit is disposed upstream of the electric fluid passage, contacting the electric penetration pump, and comprises a porous material that can absorb the liquefied fluid. The gas / liquid separation unit comprises at least one fluid inflow hole through which a mixture of a gaseous fluid and a liquefied fluid is introduced, and at least one gas discharge hole communicating with the fluid inflow hole configured for discharging the gaseous fluid.
Owner:SAMSUNG SDI CO LTD +1
Porous array electrode with two-stage structure as well as preparation method and application thereof
ActiveCN111188056AHigh specific surface areaImprove hydrogen production efficiencyElectrode shape/formsElectrochemical responseElectrolysis
The invention belongs to the technical field of water electrolysis, and particularly relates to a porous array electrode with a two-stage structure as well as a preparation method and application of the porous array electrode. The porous array electrode includes: a porous conductive substrate; a primary array structure grown on the porous conductive substrate; and a sheet-shaped, conical or spine-shaped secondary nano-structure growing on the surface of each unit of the primary array structure in a radial manner. The invention further discloses the preparation method and application of the electrode. The porous electrode structure is obtained for the first time; the surface of the conductive substrate is provided with an arrayed two-stage structure, so that firm combination with the conductive substrate can be achieved, damage and falling are not liable to occur, more active sites for electrochemical reactions are exposed, the electrochemical reaction efficiency is improved. More nanoscale hydrogen bubbles can be obtained when the porous array electrode is used as a cathode material for the water electrolysis hydrogen evolution reaction.
Owner:BEIJING UNIV OF CHEM TECH
Air fuel cell and air channel structural member, assembly and box body structure
PendingCN108232370AImprove electrochemical reaction efficiencyIncrease battery outputFuel and primary cellsHybrid cell detailsElectrochemical responseEngineering
The invention provides an air fuel cell including an outer box, an upper cover, a series cathode assembly, a number of metal anode plates, a battery anode connection terminal, and a battery cathode connection terminal; the outer box is internally provided with an electrolytic solution; the upper cover is provided with a number of ventilating grooves; the series cathode assembly includes a number of assembly bodies each provided with two cell cathode plates; the metal anode plates are placed between the battery cathode plates of each two adjacent assembly bodies; the battery anode connection terminal and the battery cathode connection terminal are connected with the metal anode plates in series respectively. The invention also relates to an air channel structural member, an air channel assembly and an air fuel cell box body structure. The unique air channel structure is adopted, a good air circulation environment is provided for a cathode of the cell, the efficiency of the electrochemical reaction is improved, and the output of the cell is increased. The air fuel cell has the advantages of ingenious design, reasonable structure, high practicability and convenient promotion.
Owner:苏州讴德新能源发展有限公司
Microbial fuel cell, microbial fuel cell system, and method for using microbial fuel cell
InactiveUS20160351937A1Improve electrochemical reaction efficiencyElectrochemical reaction efficiency is not enhancedCell electrodesBiochemical fuel cellsMicrobial fuel cellElectrolysis
A microbial fuel cell (1) includes an electrolysis solution (2) including organic matter, a negative electrode (3) holding anaerobic microorganisms and being in contact with the electrolysis solution, and a positive electrode (4) including a water-repellent layer (41) and a gas diffusion layer (42) placed on the water-repellent layer. A ratio of an area of the negative electrode to an area of the gas diffusion layer is defined as T1, and a ratio of a maximum current density of the positive electrode at an electric potential of the positive electrode in an electrode system including the electrolysis solution, the negative electrode, and the positive electrode to a maximum current density of the negative electrode at an electric potential of the negative electrode in the electrode system is defined as T2. The ratios T1 and T2 satisfy the relationship of the expression (1): T21 / 2≦T1≦T22.
Owner:PANASONIC CORP
Proton exchange membrane fuel cell capable of preventing accumulated water
ActiveCN109449460AAvoid Waterlogging ProblemsImprove electrochemical reaction efficiencyFuel cell heat exchangeElectrochemical responseTemperature difference
The invention discloses a proton exchange membrane fuel cell capable of preventing accumulated water. The fuel cell comprises a mounting base, a battery main body and a refrigerating device, wherein an upper cavity and a lower cavity which communicate with each other are formed in the mounting base; the lower cavity is provided with a water outlet; the battery main body is arranged in the upper cavity, and is provided with a negative electrode exhaust area; and the refrigerating device is arranged in the lower cavity, is provided with a heat absorption area which communicates with the negativeelectrode exhaust area, and is used for condensing gas discharged through the negative electrode exhaust area into liquid and discharging the liquid from the water outlet. According to the technicalscheme, the refrigerating device is directly arranged in the mounting base, and directly communicates with the battery main body, so that the contact area between the refrigerating device and the negative electrode exhaust area can be enlarged; and a relatively large temperature difference is formed between the battery main body and the heat absorption area, so that the gas discharged through thenegative electrode exhaust area is condensed into the liquid in a cold environment and discharged from the water outlet, the accumulated water in the battery main body is prevented, and the electrochemical reaction efficiency is improved.
Owner:WUHAN POLYTECHNIC UNIVERSITY
A hollow graphene sphere loaded nano-tin disulfide composite material and its preparation method
ActiveCN105621355BInhibition of agglomerationIncrease contact areaMaterial nanotechnologyCell electrodesPorous grapheneStructural stability
Owner:SHANGHAI UNIV
Rare earth metal and alloy electrolytic reduction intelligent production line
PendingCN112538640ASmall temperature changeImprove electrochemical reaction efficiencyCellsMould handling equipmentsElectrochemical responseAlloy
The invention discloses a rare earth metal and alloy electrolytic reduction intelligent production line. A centralized control operation display platform carries out centralized and coordinated control on all equipment, carries out real-time data communication with other equipment, and continuously and controllably feeds powder rare earth oxide raw materials through a metering feeder, compared with manual timing intermittent feeding, the feeding process is more uniform, the temperature change amplitude in a molten pool of a molybdenum alloy electrolytic cell is reduced, the electrochemical reaction efficiency in the molten pool can be effectively improved, the reaction time is shortened, meanwhile, the actual loss conditions of the electrolytic cell, an anode and a cathode are monitored inthe production process, a cathode driving assembly accurately controls the three-dimensional micro-movement of a cathode bar, the uniformity of the circumferential radial distribution of a cylindrical electric field is improved, the improvement of the product quality stability and the energy saving are facilitated, and the technical problem that in the prior art, the operation process depends onthe artificial experience is solved.
Owner:桂林智工科技有限责任公司
SO2 depolarization electrolytic tank
ActiveCN111424286AGood chemical stabilityLow costCellsElectrode shape/formsElectrochemical responsePtru catalyst
The invention discloses an SO2 depolarization electrolytic tank, and belongs to the technical field of electrochemistry. The electrolytic tank comprises one or more single cells which are arranged insequence, wherein each single cell comprises a membrane electrode assembly, a cathode side support body, an anode side support body, a sealing ring, an upper polar plate and a lower polar plate. The anode side support body is made of a graphite felt material with large porosity; the upper pole plate and the lower pole plate are of flat-plate-shaped structures. The large-porosity graphite felt canprovide good filling and supporting effects, so that an anode material can uniformly and quickly pass through the interior of the large-porosity graphite felt, and the large-porosity graphite felt canbe stably used for a long time under the conditions of feed liquid soaking and high-current electrochemical reaction. Meanwhile, a catalyst is easily supported on the graphite felt, so that the electrochemical reaction efficiency in the electrolytic tank can be further improved. According to the invention, the problems of high processing difficulty, high processing cost and the like caused by flow channel engraving of the upper and lower polar plates are effectively avoided. By adopting the technical scheme provided by the invention, the SO2 depolarization electrolytic tank which is efficient, stable, compact and low in cost can be constructed.
Owner:TSINGHUA UNIV
Porous silicon/carbon composite material synthesized in situ by taking porous polymer microspheres as template, preparation method and lithium ion battery
PendingCN114079045AInhibition of volume expansionImprove ionic conductivityNegative electrodesSecondary cellsCarbon compositesDischarge efficiency
The invention relates to a porous silicon / carbon composite negative electrode material in-situ synthesized by taking porous polymer microspheres as a template, a preparation method and a lithium ion battery. The preparation process comprises the following steps of: adding porous polymer microspheres into water, heating and stirring to obtain a suspension solution; adding a silicon source into the suspension solution to obtain a mixed solution; filtering the mixed solution, washing the mixed solution with deionized water and drying the mixed solution in sequence, then adding a reducing agent, and conducting grinding and mixing to obtain an intermediate product A; treating the intermediate product A through a thermal reduction process to obtain an intermediate product B; and carrying out acid pickling on the intermediate product B, washing with deionized water, filtering, and drying to obtain a final product. Compared with the prior art, a carbon layer obtained through in-situ compounding can better improve the electrical conductivity, the cycling stability, the charge-discharge efficiency, the rate capability and other electrochemical properties of a silicon negative electrode, and the unique micro-nano pores reserve a lithium-intercalation expansion space for silicon and reduces the absolute volume change of the composite material in the charge-discharge process.
Owner:昱瓴新能源科技(浙江)有限公司
Biosynthesis method of high-performance olivine type manganese-based phosphate positive electrode material
ActiveCN112811406ASynthetic conditions are mildEasy to operateMaterial nanotechnologySecondary cellsInorganic saltsLithium electrode
The invention provides a biosynthesis method of a high-performance olivine-type manganese-based phosphate positive electrode material, and an olivine-type phosphate material is synthesized by using a biomineralization mechanism of yeast cells and is used as an electrode material of a lithium ion battery. According to the biosynthesis method disclosed by the invention, the size, the structure, the morphology, the chemical composition, the crystal growth orientation and the like of nano inorganic salt particles can be more effectively regulated and controlled on the molecular level; wherein the mineralization growth process of phosphate crystals is regulated by utilizing a biological mineralization mechanism of yeast cells, and nano crystal LiMn0.8Fe0.2PO4 particles preferentially growing in the Li < + > transmission crystal orientation [010] direction are obtained; furthermore, by virtue of a high-temperature inert atmosphere heat treatment condition, yeast cells are thermally decomposed into a biomass carbon network in which amorphous carbon and nitrogen-doped graphene coexist, and a multi-stage nano in-situ composite structure is formed between the biomass carbon network and LiMn0.8Fe0.2PO4 nanocrystals, so that a three-dimensional conductive network of an efficient electronic path and an ion path is constructed, and the electrochemical performance of the manganese-based olivine type LiMn0.8Fe0.2PO4 positive electrode material is remarkably improved.
Owner:TIANJIN ENERGIES
Electrolytic tubular electrode, water electrolysis device comprising same and application thereof
PendingCN111172557ALarge specific surface areaImprove hydrogen production efficiencyCellsWater/sewage treatmentElectrolysed waterIon-exchange membranes
The invention belongs to the technical field of electrolyzed water, and particularly relates to an electrolytic tubular electrode, a water electrolyzing device comprising the same and application thereof. The tubular electrode (10) comprises an ion exchange membrane (2), and a hollow inner-layer tube (1) and a hollow outer-layer tube (3) which are coaxially arranged; the space between the inner-layer tube (1) and the outer-layer tube (3) is filled with the ion exchange membrane (2); the inner-layer tube (1) is an electrolyzed water anode tube, and the outer-layer tube (3) is an electrolyzed water cathode tube; or the inner-layer tube (1) is an electrolyzed water cathode tube, and the outer-layer tube (3) is an electrolyzed water anode tube; and the inner-layer tube (1) and the outer-layertube (3) are conductive pipes with air-permeable and water-permeable tube walls. The electrolysis device comprising the electrolysis tubular electrodes is designed, installation is convenient, the multiple electrolysis tubular electrodes can be arranged in the electrolysis device side by side, the electrolysis efficiency is high, the diameter of hydrogen bubbles in hydrogen-rich water generated through electrolysis is mainly distributed below 350 nm, and the hydrogen content in the hydrogen-rich water reaches up to 2.5 ppm.
Owner:BEIJING UNIV OF CHEM TECH
Sulfur/MXene/graphene composite material and preparation method and application thereof
ActiveCN111900403AHigh specific surface areaGood electrical conductivityPositive electrodesLi-accumulatorsElectrical batteryLithium sulfur
The invention relates to a sulfur / MXene / graphene composite material and a preparation method and application thereof. The composite material is prepared from elemental sulfur, MXene and graphene, andthe mass ratio of the elemental sulfur to the MXene to the graphene is (4-17):(1-6):1. The preparation method of the sulfur / MXene / graphene composite material comprises the following steps: mixing andgrinding the elemental sulfur, the MXene and the graphene, and then preparing the sulfur / MXene / graphene composite material through a vacuum melting diffusion method. The sulfur / MXene / graphene composite material is high in sulfur loading capacity, good in conductivity. When the material is used as a positive electrode material of a lithium-sulfur battery, the composite material can improve the conductivity of the positive electrode material and the utilization rate of active substance sulfur, and can adsorb intermediate-state polysulfide generated in the reaction process, thereby avoiding the shuttle effect caused by the dissolution of the intermediate-state polysulfide, and further improving the specific energy and coulombic efficiency of the lithium-sulfur battery.
Owner:GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST
Bipolar plate for fuel cell
PendingCN113839062AImprove electrochemical reaction efficiencyImprove reaction efficiencyCollectors/separatorsElectrochemical responseReaction field
The embodiment of the invention discloses a bipolar plate for a fuel cell, which comprises a cathode reaction flow field, a first fuel notch and a second fuel notch, wherein the cathode reaction flow field comprises a main reaction flow field located in the middle and two flow guide flow fields located at the two ends of the main reaction flow field, wherein each flow guide flow field comprises a plurality of flow guide flow channels, one flow guide flow field is communicated with the first fuel notch and the main reaction flow field, the other flow guide flow field is communicated with the second fuel notch and the main reaction flow field, and the multiple flow guide flow channels are in a radial shape diverging towards the main reaction flow field by taking the first fuel notch or the second fuel notch as a starting point. According to the invention, the fuel can be fully distributed on the whole cathode reaction flow field, and all the fuel entering the reaction flow field participates in electrochemical combustion reaction, so that the electrochemical reaction efficiency of the reaction field is effectively improved, some reaction dead zones or reaction dead angles possibly existing in the reaction field are effectively eliminated, and the reaction efficiency is improved.
Owner:素水新材料(上海)有限公司 +1
A kind of zno/c hollow microsphere and preparation method thereof
InactiveCN108455655BImprove adsorption capacityImprove performanceZinc oxides/hydroxidesCarbon preparation/purificationMicrosphereElectrical battery
Owner:GUANGDONG UNIV OF TECH
Wastewater pre-membrane pretreatment device and pre-membrane pretreatment method
PendingCN114538573AImprove efficiencyEnsure the quality of product waterWater treatment parameter controlDispersed particle separationElectrochemical responseEnvironmental chemistry
The invention provides a wastewater membrane pretreatment device which comprises an electrochemical reaction tank and a salt separation electrodialyzer, two groups of electrodes are mounted in the electrochemical reaction tank; in the first group of electrodes, the anode is a noble metal coating electrode, and the cathode is one of a graphite electrode, a titanium electrode and a stainless steel electrode; in the second group of electrodes, the anode is an iron electrode or an aluminum electrode, and the cathode is a stainless steel electrode or a graphite electrode. A wastewater inlet and a produced water outlet are formed in the electrochemical reaction tank; the wastewater inlet is used for introducing industrial wastewater, the produced water outlet is communicated with an inlet of a thin liquid chamber of the salt-separating electrodialyzer, an outlet of the thin liquid chamber of the salt-separating electrodialyzer is communicated with the wastewater inlet, and liquid discharged from an outlet of a thick liquid chamber of the salt-separating electrodialyzer is impurity-removed water subjected to membrane pretreatment. The structure is simple, wastewater of different water qualities can be treated, and impurities in the wastewater can be efficiently removed with low consumption. The invention also provides a wastewater membrane pretreatment method.
Owner:HANGZHOU WATER TREATMENT TECH DEV CENT
Lithium ion battery and preparation method of nickel oxide-nickel-nickel oxide nanotube array
InactiveCN110854369AIncrease profitImprove electrochemical reaction efficiencyCell electrodesDecorative surface effectsChemical physicsComposite electrode
The invention relates to a lithium ion battery and a preparation method of a nickel oxide-nickel-nickel oxide nanotube array. The lithium ion battery comprises a nickel nanotube array composite electrode, and the nickel nanotube array composite electrode is prepared from the nickel oxide-nickel-nickel oxide nanotube array. The lithium ion battery comprises the nickel nanotube array composite electrode with the nickel oxide-nickel-nickel oxide sandwich structure, so transmission of electrons and electrolyte ions of an electrode system in the lithium ion battery can be enhanced, and excellent rate capability and cycling stability are obtained while high specific capacity is ensured.
Owner:JILIN JIANZHU UNIVERSITY
Central air-conditioning system with carbon dioxide absorption and utilization device
ActiveCN109915950BReduce demandReduce energy consumptionCellsCondensate preventionElectrochemical responseElectrolytic agent
The invention relates to a central air-conditioning system with a carbon dioxide absorption and utilization device, which includes an air supply system and an electrolyte circulation system. In the liquid circulation system, the condensate pipe is connected to the electrolyte return pipe, the cathode of the electrolytic cell is installed on the wall of the electrolytic cell, the anode is installed in the middle of the electrolytic cell, and uses a turbine structure, and the anode is connected to the fan of the air supply system through a connecting rod. During the operation of the air supply system, the fan drives the anode to rotate, agitates the electrolyte, and increases the electrochemical reaction rate. The front coil of the air supply system is used to handle the air humidity load while preventing the electrolyte from entering the filter. The end coil is used to handle the air cooling load and reduce the air temperature. The filter is filled with solid activated carbon to absorb carbon dioxide. The present invention can not only reduce indoor CO 2 At the same time, it can reduce the energy consumption of the air-conditioning fresh air system.
Owner:YANSHAN UNIV
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