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1275results about How to "Improve conductivity" patented technology

Method for preparing lithium iron phosphate / carbon composite material of lithium ion battery

The invention relates to a method for preparing a lithium iron phosphate / carbon composite material of a lithium ion battery, which belongs to the technical field of lithium ion batteries. The method for preparing the lithium iron phosphate / carbon composite material of the lithium ion battery comprises the following steps of: 1) preparing a suspending graphene-dispersed aqueous solution system, namely, crushing graphite to 1 to 5 microns, adding the crushed graphite into distilled water or purified water, adding 0.1 to 5 percent of surfactant, heating with stirring the mixed solution to 180 to 250 DEG C in a sealing way, performing stirring for 2 to 6 hours and reducing the temperature; 2) crushing lithium iron phosphate to the particle size of 1 to 5 microns, adding the crushed lithium iron phosphate into the distilled water or the purified water, adding with stirring 0.01 to 1 percent of coupling agent, performing uniform stirring, adding the graphene-dispersed aqueous solution, and performing stirring and filtration; and 3) vacuum-drying solid powder obtained by the filtration, and calcinating the dried solid powder for 2 to 12 hours to obtain the graphene-coated lithium iron phosphate cathode material. The method has the advantages of simple process, high material performance, high conductivity, high bulk density, high compacted density and the like.
Owner:HEBEI LITAO BATTERY MATERIAL

Flexible indium tin oxide film electrode, preparation method and flexible solar cell

The invention belongs to the technical field of flexible transparent film electrodes, and particularly relates to a flexible indium tin oxide film electrode, a preparation method and a flexible solar cell. According to the flexible indium tin oxide thin film electrode provided by the invention, after the processes of pre-treating substrates such as PET, covering an acrylic resin hard coating, depositing a SiO2 transition layer and the like, the adhesive force of the indium tin oxide conductive thin film is improved through the indium tin oxide conductive thin film deposited through alternate radio frequency magnetron sputtering and direct current pulse magnetron sputtering; the bottom layer deposited by radio frequency magnetron sputtering is used for providing an interface seed layer for the fluorine-doped indium tin oxide conductive thin film layer deposited by direct current pulse magnetron sputtering and having high carrier concentration and low resistance, and the top layer is used for providing protection, so that the conductivity, environmental stability and other properties of the flexible indium tin oxide thin film electrode are improved; the conductive performance is not easy to attenuate, the long-term use stability is good, and the technical problem that in the prior art, a flexible transparent film electrode is low in performance is solved.
Owner:江苏先导微电子科技有限公司

A method for preparing a lead-acid battery membrane electrode

The present application relates to the technical field of lead-acid battery electrode, aiming at the problem of thick lead paste on the existing lead-acid battery plate, large resistance during charging and poor rate discharge performance of the battery, a preparation method of lead-acid battery membrane electrode is disclosed, comprising the following steps: adding a binder to the prepared lead paste, rolling the lead paste containing the binder on the lead skin to form a lead paste film layer, immersing the lead skin and the attached lead paste film layer in a sulfuric acid solution, and solidifying and drying after taking out; the binder is polytetrafluoroethylene emulsion or a binder containing polytetrafluoroethylene emulsion. Unlike the high molecular film attached to the surface of the lead-acid battery plate in the prior art, the present application obtains a thin film electrode with thin thickness, uniform active material dispersion, large active material and current collector contact area and good conductivity, and has the advantages of large rate charge and discharge cycle.
Owner:CHAOWEI POWER GROUP CO LTD

Thioether cross-linked solid polymer electrolyte membrane as well as preparation method and application thereof

PendingCN121983662AFacilitate dissociationlower activation energySecondary cellsPolymer scienceAcyl group
The invention relates to the technical field of electrolyte, in particular to a thioether cross-linked solid polymer electrolyte membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: taking N, N-dimethylformamide, respectively adding 3, 6-dioxa-1, 8-octane dithiol and triglycidyl isocyanurate, and uniformly stirring to obtain a mixed solution; adding bis (trifluoromethylsulfonyl) imide lithium into the mixed solution, putting magnetons on a magnetic stirrer, and completely dissolving the magnetons to obtain a precursor solution; and pouring a proper amount of the precursor solution into a polytetrafluoroethylene mold, spreading, and carrying out cross-linking polymerization in a blast oven to form the film. The three-dimensional thioether cross-linked network structure has a large number of weakly coordinated thioether groups, dissociation of lithium salt can be promoted, a large number of free Li < + > is generated, the number of Li < + > is increased, meanwhile, the crystallinity of a polymer is remarkably reduced, the ionic conductivity is improved, the mechanical stability of a film can be improved, and the service life of a battery is effectively prolonged.
Owner:WUHAN TEXTILE UNIV

Halide electrolyte, preparation method and solid-state battery

The invention relates to the field of solid-state batteries, in particular to a halide electrolyte, a preparation method and a solid-state battery. The halide electrolyte comprises a tin element, and the chemical formula of the halide electrolyte is Li2Zr < 1-x > Sn < x > Cl < 6-4x > O < 2x >, and x is less than or equal to 0.3. Through tin-oxygen co-doping, force is exerted at the same time from the two aspects of crystal structure (bulk phase) and interface chemistry, the key problems of ionic conductivity, electrochemical stability, interface compatibility and the like are cooperatively solved, the cost and the process are perfectly considered, and an all-solid-state battery electrolyte solution with a great commercialization prospect is provided.
Owner:ZHEJIANG INTELLIGENT TRANSPORTATION TECHNOLOGY INNOVATION CENTER +1

S-doped g-C3N4 coated modified graphite material, preparation method thereof and lithium ion battery negative electrode

The invention relates to an S-doped g-C3N4 coated modified graphite material, a preparation method thereof and a lithium ion battery negative electrode. The method comprises the following steps: mixing a g-C3N4 precursor with a sulfur source, and then carrying out heat treatment under the condition of shielding gas to obtain sulfur-doped graphite phase carbon nitride S-g-C3N4; carrying out plasma modification treatment on the surface of the graphite material by adopting plasma reaction gas to obtain modified graphite; mixing S-g-C3N4 with the modified graphite to obtain a mixed material; and calcining the mixed material in a protective gas environment to obtain the S-doped g-C3N4 coated modified graphite material. The invention also provides the graphite material prepared by the method and a lithium ion battery negative electrode prepared from the graphite material. The graphite material has relatively high conductivity, interface compatibility and structural stability.
Owner:MINMETALS EXPLORATION & DEVELOPMENT CO LTD

Self-powered flexible sensor and preparation method thereof

The invention discloses a self-powered flexible sensor and a preparation method thereof, and belongs to the field of electronic skin, man-machine interaction, flexible electronic devices and sensors. The invention relates to a cellulose acetate-based ionic gel self-energized flexible sensor which is prepared from cellulose acetate, ionic liquid, a polymer monomer, a cross-linking agent and an initiator and has good mechanical property and antibacterial property, the cellulose acetate enhances the mechanical property of the gel through non-covalent crosslinking, and the ionic liquid plays a conductive role. The flexible sensor has good conductivity, high sensitivity and stability, and can be stretched, twisted and bent. Meanwhile, the high transparency and excellent biocompatibility can be realized, so that the electronic skin can be used as the electronic skin for multifunctional perception and integrated application. The material is environment-friendly, the preparation method is simple, the operability is high, the application field is wide, and the prospect is wide.
Owner:SICHUAN UNIV

Catalyst for preparing methanol through photocatalytic reduction of CO2 as well as preparation method and application of catalyst

PendingCN121755245AConducive to multiple reflectionsEasy to scatterPhysical/chemical process catalystsOrganic compound preparationPtru catalystActive site
The invention relates to the technical field of photocatalytic processes, in particular to a catalyst for preparing methanol through photocatalytic reduction of CO2 as well as a preparation method and application of the catalyst. The catalyst comprises a composite carrier and active sites dispersed on the surface or in pores of the composite carrier, the composite carrier is of a heterojunction composite structure formed by a hollow TiO2 sphere and MCN, the hollow TiO2 sphere comprises a shell layer and a spherical cavity structure located in the shell layer, the shell layer is formed by TiO2 nanoparticles, and the MCN has a mesoporous pore structure; a II-type or Z-type heterojunction interface is formed between the hollow TiO2 spheres and the MCN through physical contact and chemical action; the active sites comprise copper nano species, sulfur vacancy defects and amino groups; the copper nano species are copper nano particles or clusters, and the valence state of copper is 0 and / or + 1 valence amino is grafted on the surface of the composite carrier through an organic long chain. The catalyst provided by the invention can greatly improve the yield and selectivity of methanol prepared by photocatalytic reduction of carbon dioxide.
Owner:XINGTAI UNIV

An electrocatalytic oxidation device for treating saline industrial organic wastewater and its operating method

ActiveCN121449174BEffective reductive dechlorinationcontrol energy consumptionWater/sewage treatment by irradiationSpecific water treatment objectivesCatalytic oxidationHypochlorous acid
This invention relates to the field of industrial wastewater treatment technology, and discloses an electrocatalytic oxidation device and its operating method for treating saline industrial organic wastewater. Wastewater enters the reaction chamber through the bottom inlet, is forced through the anode channels, and undergoes an electrochemical oxidation reaction on the anode surface to convert chloride ions into hypochlorous acid. A vacuum ultraviolet light source performs in-situ photolysis of water molecules and hypochlorous acid, exciting various active species, including strongly reducing hydrated electrons, strongly oxidizing hydroxyl radicals, and chloride radicals. This device, through the construction of a reduction-oxidation system, can efficiently degrade various pollutants with both electron-rich and electron-deficient characteristics. This invention utilizes the synergistic coupling of electrochemical generation and photochemical conversion to convert high-concentration chloride ions into active precursors, effectively overcoming the bottlenecks of low degradation efficiency and poor selectivity in traditional technologies for high-salt and complex water quality, and significantly improving the system's mineralization efficiency and energy utilization rate.
Owner:THREE GORGES ENVIRONMENTAL TECH CO LTD +1

LLATO ferroelectric phase nbto solid-state electrolyte material and preparation method and application thereof

This invention provides an LLATO@ferroelectric phase NBTO solid electrolyte material, its preparation method, and its application, belonging to the field of lithium-ion solid electrolyte technology. This invention employs a sol-gel method for mixing and calcination to synthesize NBTO ferroelectric phase-coated LLATO lithium-ion conductors (Li). 0.33 La 0.457 Ag 0.1 TiO3@ x wt% Na 0.5 Bi 0.5 TiO3 (0< x ≤6). The LLATO@ferroelectric phase NBTO solid electrolyte material of the present invention exhibits excellent comprehensive performance, with a room temperature ionic conductivity of σ=1.08×10⁻⁶. ‑3 S / cm, relative to the room temperature ionic conductivity of the uncoated LLATO solid electrolyte (1.54 × 10⁻⁶). ‑4 The voltage (S / cm) is improved by an order of magnitude. In lithium symmetric battery tests, it maintains stable cycling after 2000 charge-discharge cycles at 0.1 mA and maintains stable voltage output at 1 mA.
Owner:HEFEI UNIV OF TECH

MXene / CNF composite mesoporous fiber material as well as preparation method and application thereof

The invention provides an MXene / CNF composite mesoporous fiber material as well as a preparation method and application thereof. The preparation method comprises the following steps: injecting an MXene / CNF spinning solution into an acetic acid coagulating bath, fishing out the MXene / CNF spinning solution, and air-drying the MXene / CNF spinning solution to obtain the MXene / CNF composite mesoporous fiber material, the MXene / CNF spinning solution is a dispersion liquid of nano cellulose and MXene in water. According to the MXene / CNF composite mesoporous fiber material with high conductivity and narrow distribution, the mesoporous structure not only effectively transfers stress, but also contributes to rapid transmission of electrons and ions, has a relatively high application prospect in the fields of electromagnetic shielding, wave absorption, energy storage device electrodes and flexible sensors, and can be widely applied to the fields of electromagnetic shielding, wave absorption, energy storage device electrodes and flexible sensors. And a novel multifunctional platform is expected to be provided for wearable electronic equipment, electronic skin, human body motion monitoring equipment and the like.
Owner:ZHEJIANG JINCHANG SPECIALTY PAPER CO LTD

Composite current collector for zinc-iodine battery, preparation method thereof and zinc-iodine battery

The application provides a composite current collector for a zinc-iodine battery, a preparation method thereof and a zinc-iodine battery, and provides a conductive plastic substrate as a support layer; a metal conductive layer is formed by depositing titanium on at least one side surface of the conductive plastic substrate by using a magnetron sputtering technology, so that the composite current collector for the zinc-iodine battery is obtained. The application realizes the synergistic improvement of the light weight and the corrosion resistance of the current collector.
Owner:XI AN JIAOTONG UNIV

Lithium ion battery electrolyte and application thereof

PendingCN122315069AImprove conductivityreduce conductivityElectrolytic agentElectrical battery
This invention proposes a lithium-ion battery electrolyte and its application. The electrolyte comprises at least the following components: a fluorinated solvent, including 2,2-difluoroethyl acetate, fluoroethylene carbonate, and 2,2-difluoroethyl ethyl carbonate; a lithium salt, including a first lithium salt comprising lithium hexafluorophosphate; and an additive, including a first additive comprising lithium difluorobis(oxalato)phosphate. The lithium-ion battery electrolyte and its application proposed in this invention can improve the electrolyte's high-voltage resistance and kinetic performance, reduce battery impedance, and enhance the battery's fast-charging performance and high-temperature cycle stability.
Owner:ENVISION DYNAMICS TECH (JIANGSU) CO LTD +1

A method for preparing high-purity oxygen-free copper

PendingCN122279680AGrowth inhibitionInhibit entry
This invention discloses a method for preparing high-purity oxygen-free copper, relating to the field of metallurgical technology. The method includes multi-stage electrolytic refining, gradient-heating vacuum melting, inert gas-protected refining, electron beam melting, hydrogen plasma arc melting, directional solidification, and post-treatment steps. The multi-stage electrolytic refining utilizes a specific component electrolyte and periodically commutated current; vacuum melting is combined with bidirectional electromagnetic stirring; inert gas-protected refining is combined with a gradient reduction composite covering agent; electron beam and hydrogen plasma arc melting achieve deep purification and deoxidation; and directional solidification and two-stage annealing ensure product performance. The high-purity oxygen-free copper prepared by this invention has a conductivity of 102.3% IACS, a copper content ≥99.9999%, and an oxygen content <1.0 ppm. It exhibits high purity, low oxygen content, and excellent conductivity. The process is stable and controllable, making it suitable for high-end electronics applications.
Owner:XIAN ZHONGSHI METAL CO LTD

Anionic polymer containing oxygenated fluorene polyarylate pendant side chains

This invention relates to the field of polymer technology, specifically disclosing an oxyfluorene-containing polyaryl suspended side-chain anion exchange polymer. By introducing an oxyfluorene structure, this invention successfully overcomes the defects of traditional polyaryl ether materials, such as easy main chain breakage and degradation under strong alkaline conditions, thus improving the chemical and thermal stability of the material. The suspension side-chain strategy introduces benzene rings, quaternary ammonium groups, or piperidine cationic groups, effectively promoting microphase separation within the polymer and constructing efficient ion transport channels. This allows the membrane material to maintain a low swelling ratio while achieving good hydroxide ion conductivity, reaching up to 170.2 mS / cm at 80°C. The polymer exhibits excellent mechanical properties, with outstanding dry membrane tensile strength and excellent alkali resistance and durability. After immersion in a strong alkaline (KOH) solution at 80°C for over 1800 hours, its conductivity loss is minimal. The anion exchange membrane prepared by this invention has good application value in fuel cells and water electrolysis for hydrogen production, demonstrating strong commercial potential.
Owner:XIAMEN UNIV

Nitrogen-doped hierarchical pore carbon material as well as preparation method and application thereof

The invention provides a nitrogen-doped hierarchical pore carbon material as well as a preparation method and application thereof, and the preparation method comprises the following steps: sequentially dissolving urea, alkali metal hydroxide and / or a pore-forming agent in water to obtain a mixed solution, cooling the mixed solution, adding cellulose-based biomass, and dissolving the cellulose-based biomass to obtain transparent sol; freezing the transparent sol into a solid, and performing vacuum freeze drying to obtain a white loose solid; mixing and grinding the liquid polymeric monomer and the white loose solid, and performing heat treatment to obtain a solid product; and carbonizing the solid product in an inert atmosphere, and then pickling and washing the carbonized product. According to the preparation method, chain-shaped arrangement in cellulose-based biomass molecules is converted into three-dimensional net-shaped arrangement through dissolution, macropores are formed, a macropore framework is kept stable and does not collapse in the carbonization process through polymerization reaction, and the formed hierarchical pore carbon material has a micropore / mesopore / macropore coexisting three-dimensional structure and controllable specific surface area and pore size distribution; meanwhile, in-situ nitrogen doping can also be realized.
Owner:PETROCHINA CO LTD

A sulfonic acid-based organic polymer, a sulfonic acid-based organic polymer / carbon nanotube composite material, and a preparation method and application thereof

This invention belongs to the technical field of lithium-ion battery cathode materials, specifically relating to a sulfonic acid-based organic polymer, a sulfonic acid-based organic polymer / carbon nanotube composite material, its preparation method, and its application. The sulfonic acid-based organic polymer is prepared by a dehydration condensation reaction of 2,5-diaminobenzenesulfonic acid and hexaazabenzophenanthrene hexacarboxylic acid trianal. When used as a lithium-ion battery cathode material, it exhibits high specific capacity and excellent cycle stability, overcoming the solubility problem of organic cathode materials in electrolytes. When the sulfonic acid-based organic polymer is combined with carbon nanotubes and applied to lithium-ion battery cathode materials, battery performance is significantly improved, and the capacity remains stable even after long-term cycling. The synthesis methods of the sulfonic acid-based organic polymer and the sulfonic acid-based organic polymer / carbon nanotube composite material of this invention are simple, have abundant raw material sources, and good reproducibility, making them suitable for industrial production and possessing broad application prospects in the field of lithium-ion batteries.
Owner:CHANGZHOU UNIV

Open-close type induction heating coil connecting device using graphite sheet and copper plate butt joint

A coil connection device for an openable induction heating device is disclosed, relating to the structural design of the connection device and the connection method between the connection device and the coil. Commonly available traditional induction heating devices typically employ a fixed structure, which is difficult to adapt to workpieces of different shapes and sizes, resulting in uneven heating and affecting processing quality. Openable induction heating devices, through the design of an openable inductor structure, achieve flexible clamping and uniform heating of the workpiece. However, the rigid connection of openable induction heating devices often suffers from problems such as arcing, severe wear after repeated use, and high maintenance difficulty and complexity. To solve these problems, this invention provides a connection device. This device increases the contact surface of the coil by L-shaped welding of a copper plate and a coil, and by assembling a graphite sheet between the copper plates, which is beneficial for the passage of large currents. Furthermore, the detachable graphite sheet not only ensures the passage of large currents but also significantly reduces the maintenance threshold and cost.
Owner:UNIV OF SCI & TECH BEIJING

Biomass-based composite electrode material, electrode sheet and hybrid supercapacitor

The application provides a biomass-based composite electrode material, an electrode sheet and a hybrid supercapacitor, and belongs to the technical field of electrochemical energy storage. 3 The biomass-based composite electrode material comprises: a biomass-derived porous carbon matrix, pores with multiple pore sizes, the volume of the pores is 0.7-1.7 cm 2 / g; and nickel-cobalt layered double hydroxide nanosheets vertically anchored on the surface of the biomass-derived porous carbon matrix; the specific surface area of the composite electrode material is 900-1400 m 2 / g. The biomass-based composite electrode material of the application significantly improves the ion adsorption and charge storage capacity. In addition, the electrode material is applied in a capacitor, which effectively improves the energy density, electrode conductivity and cycle stability of the supercapacitor.
Owner:中国电气装备集团科学技术研究院有限公司

Preparation method and application of a capacitive deionization anode applied to phosphate adsorption and desorption

A method for preparing a capacitive deionization anode for phosphate adsorption and desorption, and its application, belong to the field of inorganic phosphorus wastewater adsorption and enrichment. This invention aims to solve the problems of existing adsorption materials, such as low phosphate adsorption capacity, difficulty in reusing the adsorbent, or poor conductivity. Method: 1. Preparation of a PEDOT / YMOF-NH2 composite material; 2. Preparation of a capacitive deionization anode. Application: It is used for the adsorption and desorption of phosphates in phosphate-containing water. This invention is used for the preparation of a capacitive deionization anode for phosphate adsorption and desorption.
Owner:HARBIN INST OF TECH ZHENGZHOU RES INST

A triboelectric-based self-adapting self-powered flexible sensing device and a preparation method thereof

PendingCN122217364AImprove analytical abilityreduce dependenceBatteries circuit arrangementsSecondary cells
The application relates to a self-adaptive self-powered flexible sensing device based on triboelectricity and a preparation method thereof, which comprises a flexible device, a charging module and a single-chip circuit board; the flexible device comprises, from top to bottom, a triboelectric layer, an insulating layer, a potential layer and a battery layer; the triboelectric layer is connected with the charging module, the charging module is connected with the battery layer, and the battery layer is connected with the single-chip circuit board. The system collects signals of multiple electrode ports through a single-chip microcomputer and transmits the signals to a mobile phone or a computer terminal through Bluetooth wireless transmission, so that the convenience and expansibility of data acquisition are improved, and real-time monitoring and remote interaction application can be constructed.
Owner:SHANDONG UNIV

Acid and alkali corrosion resistant composite current collector film and preparation method thereof

This invention provides an acid and alkali resistant composite current collector membrane and its preparation method. The composite current collector membrane is a thin-film current collector composed of carbon material, a carbon film, and a gold source. In its composite structure, the gold source is distributed on the carbon material film and within the carbon material bulk phase, forming a close contact with the carbon material, thereby achieving good conductivity. This invention also provides a method for preparing this composite current collector membrane. The acid and alkali resistant composite current collector membrane produced by this method can be applied to long-life and fast-charging lead-acid batteries and other rechargeable, high-safety batteries using aqueous solutions.
Owner:ZHEJIANG FOLTA TECH CO LTD

High-performance tin-copper alloy wire and method for producing the same

PendingCN122517553APrecise regulationReduce burning rate
The application relates to the alloy preparation technical field and provides a preparation method of a high-performance tin-copper alloy wire, which comprises the following steps: tin and copper are smelted in a vacuum environment, and then cooled to obtain a tin-copper intermediate alloy; pure copper and the tin-copper intermediate alloy are smelted and refined in a vacuum environment, and then the alloy solution after the refining is drawn to prepare a tin-copper alloy rod; the tin-copper alloy rod is vacuum heat-treated, vacuumizing is stopped after the heat treatment temperature reaches 750-900 DEG C, nitrogen-oxygen mixed gas is filled, tin on the surface layer of the tin-copper alloy rod reacts with oxygen to generate tin oxide, heat treatment is carried out after the heat treatment, heating is stopped after the heat treatment is completed, and natural cooling is carried out to obtain a tin-copper alloy rod blank; the tin-copper alloy rod blank after the vacuum heat treatment is subjected to rough drawing treatment. The preparation method disclosed by the application obtains a high-strength high-conductivity copper-tin alloy wire through a vacuum heat treatment internal oxidation technology, and realizes accurate regulation and control of the composition of a copper-tin alloy wire blank.
Owner:HENAN POLYTECHNIC UNIV +2

An electromagnetic shielding composite material structure

This utility model relates to the field of electromagnetic shielding materials technology, and provides an electromagnetic shielding composite material structure, including a first shielding layer and a protective structure. A second shielding layer is disposed on one side of the first shielding layer, and a protective structure is disposed inside both the first and second shielding layers. By providing the protective structure, when electromagnetic waves are incident on the electromagnetic shielding composite material, the first and second metal film layers effectively reflect most of the electromagnetic waves back to their original direction, thus preventing electromagnetic wave penetration. Furthermore, a heat insulation layer is provided to prevent heat transfer. This heat insulation layer is an electromagnetic shielding heat insulation material with functions such as heat insulation, waterproof sealing, and corrosion resistance, thereby protecting the internal structure or equipment of the composite material from the effects of high-temperature environments. Finally, a wear-resistant layer is made of transparent PET material, which has properties such as abrasion resistance and corrosion resistance.
Owner:WUXI LIDA SHIELD MASCH ROOM COMPLETE SET CO LTD

A colloidal electrolyte taking a functionalized MXene material as a dispersant and preparation and application thereof

The application belongs to the technical field of lithium batteries, and discloses a gel electrolyte taking a functionalized two-dimensional MXene material as a dispersant as well as a preparation method and application of the gel electrolyte. The gel electrolyte comprises a functionalized MXene material and a basic electrolyte; the functionalized MXene material is obtained by the following method: 1) treating a MAX phase material with a solution containing HCl and LiF, intercalating, peeling off, and then reacting with a diazonium salt solution to obtain a sulfonic acid functionalized MXene material. The application further discloses a preparation method of the gel electrolyte. The application reconstructs a lithium ion solvation structure, reduces a desolvation energy barrier, homogenizes a bulk phase electric field and ion flow, cooperatively induces formation of a stable SEI interface rich in inorganic species, significantly inhibits lithium dendrite growth, and improves interface kinetic stability. The method is simple and low in cost. The electrolyte is used in a lithium metal battery and exhibits excellent cycle performance.
Owner:SOUTH CHINA UNIV OF TECH

Negative electrode sheet and lithium ion battery

The application discloses a negative pole piece and a lithium ion battery, and relates to the technical field of batteries, and specifically discloses a negative pole piece and a lithium ion battery. The negative pole piece comprises a current collector, a first coating layer and a second coating layer which are stacked on at least one side of the current collector; the first coating layer and the second coating layer each comprise a negative active material, a first binder, a second binder, a first conductive agent and a second conductive agent; and the preparation of the negative pole piece satisfies the following conditions: 2≤C2 / C1≤4 and 1.05≤X / Y≤1.25, wherein C1 and C2 are the mass proportions of the first conductive agent in the first coating layer and the second coating layer respectively, and X and Y are the solid contents of the first coating layer slurry and the second coating layer slurry respectively. According to the application, the solid content of the slurry, the proportions of different active materials and conductive agents are designed and controlled in the double-coating pole piece, and the designed proportions satisfy a certain functional relationship, so that the ion conductivity of the battery can be effectively improved while the high conductivity of the pole piece is maintained, the direct-current internal resistance of the pole piece in the charging and discharging process is reduced, the rate charging and discharging performance is improved, and the lithium precipitation window is widened.
Owner:JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD

Coated doped lithium manganese iron phosphate gradient temperature control preparation equipment and method

The invention relates to the technical field of lithium battery positive electrode material preparation, in particular to coated doped type lithium manganese iron phosphate gradient temperature control preparation equipment and method.The equipment comprises five temperature control bins arranged side by side, a sintering bin, a vertical flow guide plate, a unique temperature control gas inlet assembly and the like work cooperatively, the temperature control gas inlet assembly can flexibly adjust the gas state, and the temperature control gas inlet assembly can control the temperature of the lithium manganese iron phosphate; the preparation method comprises the following steps: firstly, mixing a lithium source, a manganese source and the like with a specific composite carbon source, and performing spray drying to obtain precursor particles; according to the preparation method, the defects of a traditional preparation technology in the aspects of temperature control and coating forming are overcome, accurate gradient temperature control can be achieved, the temperature uniformity can be improved, the coating effect can be optimized, and the preparation method is suitable for industrial production. And the performance of the lithium manganese iron phosphate positive electrode material is remarkably improved.
Owner:QINGDAO QINGYANG NEW MATERIAL DEV

Method for producing a polytetrafluoroethylene composite membrane

ActiveCN121550865Bpromote degradationmaintain conductivity continuity
This invention belongs to the field of membrane separation technology, specifically relating to a method for preparing a polytetrafluoroethylene (PTFE) composite membrane. The preparation method includes: (1) dissolving a spinning aid, a barium source, a titanium source, and a manganese source in a composite solvent, and then electrospinning to obtain precursor fibers; subsequently, blending the precursor fibers with a grain refiner, and heat-treating to obtain doped ferroelectric fiber bundles; (2) further polymerizing organic acids, inorganic acids, conductive fillers, and conductive polymers with monomers and oxidants to finally obtain a conductive polyaniline composite; (3) incorporating Mxene and the conductive polyaniline composite into an aqueous PTFE emulsion, and then further incorporating the doped ferroelectric fiber bundles and stirring to obtain a suspension; the suspension is then coated, post-treated, and kept warm to obtain a PTFE composite membrane. This invention improves the long-term fouling resistance of the PTFE membrane by doping the doped ferroelectric fiber bundles, the conductive polyaniline composite, Mxene, and PTFE.
Owner:WUHAN UNIV OF TECH +1

Ultra-high performance concrete and method for producing the same

The application relates to the field of concrete, and particularly discloses a kind of ultra-high performance concrete and a preparation method thereof. Each volume part of the ultra-high performance concrete comprises the following components by weight: 210-250 parts of water, 800-950 parts of cement, 150-250 parts of silica fume, 150-800 parts of quartz sand, 250-750 parts of graphite tailings, 200-300 parts of silica powder, 100-200 parts of steel fiber, and 10-100 parts of water reducing agent. The ultra-high performance concrete has good mechanical properties, electrical conductivity and self-sensing performance.
Owner:HARBIN ENG UNIV

FPC temperature sampling structure

The application discloses a kind of FPC temperature acquisition structures, including the temperature acquisition component of connecting aluminum-based FPC, temperature acquisition component includes integrally injection-molded temperature acquisition shell and conductor structure, temperature acquisition shell includes temperature acquisition part with temperature sensor and positioning part with connecting window, conductor structure is formed by copper material connecting piece and aluminum material connecting piece composite Copper material connecting piece is extended to temperature acquisition part and connected with temperature sensor, and aluminum material connecting piece is welded with aluminum-based FPC at connecting window position, the combination of same metal is better, welding strength is high and contact area is large, improve electrical contact performance, so that temperature information collected by temperature sensor can be reliably transmitted to FPC product, this conductor structure is designed using copper-aluminum composite structure, with high bonding strength, excellent conductivity and thermal conductivity, easy to weld, low contact resistance characteristics, can meet the welding requirements of conductor structure and aluminum-based FPC, also can reduce production cost, improve product performance.
Owner:ZHEJIANG YILIAN ELECTRONICS CO LTD +1