1831 results about "Cathode electrode" patented technology

The invention provides an electrochemical active oxygen supply device for a washing machine and a preparation method. The device comprises a shell, a single closed reaction chamber is formed in the shell, a bifunctional anode electrode and a bifunctional cathode electrode are integrated in the reaction chamber, and a compact and uniform reaction area is formed between the anode electrode and the cathode electrode. When water flows through the reaction area, hydrogen peroxide (H2O2) and / or hydroxyl radicals (OH) are / is electrochemically generated on the surface in situ by accurately adjusting the electrode potential of the difunctional anode, so that instant generation and instant utilization of active oxygen are realized. The active oxygen directly enters a washing system of the washing machine along with water flow, bacteria, viruses and fungi can be efficiently inactivated under the normal-temperature or low-temperature washing condition without additionally adding chemical disinfectants, organic stains and peculiar smell molecules are synchronously degraded, and green, efficient and intelligent healthy washing is achieved.

A lithium-ion battery with an enhanced electrode structure and methods for forming such an electrode structure are discussed. The electrode assembly comprises a pre-coat layer compressed with a metal current collector on which a lithium-manganese rich active layer is then deposited and compressed to form the assembly. The disclosed electrode structure reduces internal resistance.

The invention belongs to the field of microbial electrochemistry and solid organic waste recycling, and discloses a microbial electrosynthesis enhanced solid wastewater hydrolysis and anaerobic digestion biogas high-value utilization system coupling microbial electrosynthesis, organic solid waste electrochemical-biological synergistic hydrolysis oxidation and anaerobic digestion. The system comprises a cathode chamber and an anode chamber which are separated by an ion exchange membrane, an electrochemical driving device and an anaerobic digestion unit communicated with the anode chamber. And the cathode chamber is provided with a cathode electrode and an anaerobic acetic acid production microbial system and is communicated with biogas generated by anaerobic digestion, so that carbon dioxide in the biogas is reduced at the cathode to generate acetic acid and methane-enriched gas is output. The anode chamber is provided with an anode electrode, organic solid waste and a hydrolytic microorganism system are added, electrochemical-biological synergistic hydrolytic oxidation of the organic solid waste and hydrolysates of the organic solid waste is used as an anode reaction, oxygen evolution is inhibited, and oxygen transmembrane migration is reduced; and the hydrolysate in the anode chamber flows into the anaerobic digestion unit to produce biogas, so that the integrated operation of solid wastewater hydrolysis and biogas upgrading is realized.

The invention belongs to the field of electrochemistry, and particularly relates to a method for electrochemical lithium extraction of a decommissioned lithium battery assisted by a pseudocapacitor cathode, which comprises the following steps: a) providing an anode electrode and a cathode electrode; the anode electrode is an anode electrode made of a recycled retired lithium battery anode material or an retired lithium battery anode plate; the cathode electrode contains a Prussian blue analogue, the Prussian blue analogue is prepared by mixing citrate, transition metal salt and cyanide in water for reaction, and the transition metal salt is one or more of cobalt salt, ferric salt, copper salt and nickel salt; and b) immersing the anode electrode and the cathode electrode into the electrolyte, and electrifying to carry out electrochemical lithium extraction. According to the method, a pseudocapacitance material with a lithium discharging characteristic is adopted as a cathode to replace a common metal pole plate or a carbon material, a pseudocapacitance reaction with a corrected electrode potential is adopted to replace a hydrogen evolution reaction on the cathode of an existing system, and finally, low-energy-consumption and high-selectivity recovery of lithium is realized.

A lithium-ion battery with an enhanced electrode structure and methods for forming such an electrode structure. The electrode assembly comprises a pre-coat layer compressed with a metal current collector on which a lithium-manganese rich active layer is then deposited and compressed to form the assembly. The disclosed electrode structure reduces internal resistance.

A pixel circuit and a display device including the same are discussed. The pixel circuit in one example includes a driving element having a first electrode connected to a first node, a gate electrode connected to a second node, and a second electrode connected to a third node, a first capacitor connected between the second node and a fourth node, a second capacitor connected between the third node and the fourth node, a light emitting element including an anode electrode connected to a fifth node and a cathode electrode to which a cathode voltage is applied, a first switch element configured to connect a data voltage to the second node, and a switch circuit configured to selectively apply a reference voltage to the second node and the fourth node.

The invention discloses a water electrolysis hydrogen production anion exchange membrane electrolytic bath which comprises a bath body, an alkali corrosion resisting anode electrode, an alkali corrosion resisting cathode electrode, an anion exchange membrane and a driving mechanism, the alkali corrosion resisting anode electrode, the alkali corrosion resisting cathode electrode, the anion exchange membrane and the driving mechanism are arranged in the bath body, and the driving mechanism comprises a double-shaft motor, a swing assembly and a reciprocating motion assembly. Wherein the swing assembly realizes the swing of the alkali-corrosion-resistant anode electrode, and the reciprocating motion assembly realizes the reciprocating motion of the alkali-corrosion-resistant cathode electrode. According to the application, the double-shaft motor drives the swing assembly and the reciprocating motion assembly to operate simultaneously, so that the alkali corrosion resisting anode electrode swings, the alkali corrosion resisting cathode electrode reciprocates, electrolyte near the electrodes flows and is disturbed, and the dynamic change breaks a concentration boundary layer of the electrolyte near the surfaces of the electrodes; the migration of ions in the electrolyte to the surface of the electrode and the diffusion of reaction products from the surface of the electrode are accelerated, so that the mass transfer rate is improved, and the electrolytic reaction can be carried out more efficiently.

A display device includes: a substrate including a light emitting area and a non-light emitting area; an anode electrode on the light emitting area of the substrate; a pixel defining layer on the non-light emitting area of the substrate and defining a first opening; a first auxiliary electrode on the pixel defining layer; a light emitting layer on the anode electrode and spaced apart from the first auxiliary electrode; a cathode electrode on the light emitting layer and the first auxiliary electrode; a cathode capping layer on the cathode electrode; a spacer on the cathode capping layer and defining a second opening; and a second auxiliary electrode on the cathode capping layer and the spacer.

The invention discloses a real-time monitoring device and method for soil disintegration air escape amount and cement dissolution rate. The real-time monitoring device comprises a disintegration tank, the disintegration tank is arranged on a base, a water injection pipe with a valve is arranged at the top of the disintegration tank, a water drainage pipe with a valve is arranged at the bottom of the disintegration tank, and a support is arranged above the disintegration tank. The mechanical sensing unit comprises a lifting rope, a lifting hook, a gas collector, a grid plate, a first tension sensor and a second tension sensor, and the electrochemical monitoring unit comprises an anode electrode plate, a galvanometer, a switch, a direct-current power supply and a cathode electrode plate which are sequentially connected in series through wires to form a closed monitoring loop. Quantifying the dissolution rate of the cement by monitoring a current signal corresponding to the ion concentration change in the solution; the high-definition camera collects disintegration images in real time and synchronously transmits the disintegration images and sensor data to the server. According to the device, through the combined action of the mechanical sensing unit and the electrochemical monitoring unit, the limitation of single-parameter monitoring is solved, and key data support is provided for stability evaluation of geotechnical engineering.

The invention relates to the technical field of microbial electrochemistry, in particular to a microbial fuel cell self-driven microbial electrolysis cell system and application thereof. The microbial fuel cell self-driven microbial electrolysis cell system comprises a microbial electrolysis cell (MEC) and a microbial fuel cell (MFC) for supplying power to the MEC; an anode electrode of the MFC is a mixed strain immobilized modified carbon felt electrode, and a cathode electrode of the MFC is a modified carbon felt electrode; an anode electrode and a cathode electrode of the MEC are independently selected from one of a modified carbon felt electrode or a mixed strain immobilized modified carbon felt electrode; the mixed strain is a strain obtained by mixing shewanella and sludge bacteria; the anode electrode of the MEC is connected with the cathode electrode of the MFC, and the anode electrode of the MFC is connected with the cathode electrode of the MEC; the bipolar chambers of the MFC are both in an anaerobic state, and the bipolar chambers of the MEC are both in an anoxic state. The advantages of an MFC-MEC system are fully utilized, external power supply is not needed, the MFC supplies energy to the MEC to promote reverse flow of electrons, and electric energy is utilized in situ.

A battery cell comprises a battery cell stack with A anode electrodes, C cathode electrodes, and S separators, where A, C, and S are integers greater than one. A double-walled prismatic housing is designed to contain the battery cell stack, including a can body comprising an inner case, an outer case, and a gap between the inner and outer cases. The battery cell stack is arranged within the inner case. The outer case of the can body defines a first and a second opening at its opposite ends. A first lid portion is attached to the first opening of the outer case. A first bottom portion is attached to the second opening of the outer case.

The invention discloses a monometallic waveguide GaN-based terahertz quantum cascade laser, which is characterized in that the bottommost layer of the structure is a substrate, an n-type highly-doped n + + layer, a QCL active region and an n-type doped layer are sequentially arranged on the substrate, a cathode electrode layer is arranged on the n-type highly-doped n + + layer, an anode electrode layer is arranged on the n-type doped layer, and an anode electrode layer is arranged on the anode electrode layer. Wherein the substrate is a GaN substrate, an AlN substrate or a SiC substrate. The invention also discloses a preparation method. On the basis of systematic research on refractive index related parameters of GaN under THz frequency, absorption of single-metal waveguide structure parameters on QCL light field limiting factors and free carriers is analyzed, and QCL with high light field limiting factors and low loss of different substrates is designed. Besides, according to the designed active region structure, the gain can reach 88 / cm at 10K and can reach 34 / cm at 280K, the corresponding wavelength is 6.6 THz, and the frequency which cannot be achieved by a traditional GaAs system is achieved.

The utility model relates to a wastewater organic matter low-oxidation removal device utilizing enhanced electrolysis bubbles, which comprises an electrolytic tank, an organic matter collection tank and a surfactant collection tank, a diaphragm for dividing the inside of the electrolytic tank into an anode chamber and a cathode chamber is arranged in the middle of the electrolytic tank, and one of the anode chamber and the cathode chamber is selected as a wastewater treatment chamber; an anode electrode plate is arranged in the anode chamber, and a cathode electrode plate is arranged in the cathode chamber; a discharge groove is formed in one side of the upper opening of the wastewater treatment chamber, the discharge groove is connected with a first surfactant recovery pipe leading to the surfactant collection tank and a first discharge pipe leading to the organic matter collection tank, and the surfactant collection tank is connected with a surfactant feeding pipe leading to the wastewater treatment chamber. According to the device, electrolysis products (charged bubbles) are energized, organic matters are quickly removed in a low-oxidation manner, and the properties of the organic matters are not damaged, so that few byproducts of the organic matters are generated; meanwhile, compared with direct electrolytic oxidation of organic matters, the adhesion effect of the enhanced charged bubbles is quicker and more energy-saving.

The invention provides a self-humidifying CO2 membrane electrode structure and a preparation method thereof. The self-humidifying CO2 membrane electrode structure comprises an electrolyte isolation plate, the electrolyte isolation plate is provided with an anode side and a cathode side, the anode side is sequentially provided with a cation exchange membrane, an anode catalyst layer, a current collector and an anode electrode plate, and the cathode side is sequentially provided with an anion exchange membrane, a cathode catalyst layer and a cathode electrode plate; the anode electrode plate is provided with a first inlet, hydrogen enters the anode electrode plate from the first inlet and is subjected to a hydrogen oxidation reaction under the action of an anode catalyst to generate protons and electrons, and the protons are migrated to the electrolyte isolation plate through the cation exchange membrane; the cathode electrode plate is provided with a second inlet, CO2 gas enters the cathode electrode plate from the second inlet and is subjected to a reduction reaction under the action of a cathode catalyst to generate a reduction product and OH <->, and OH <-> is migrated to the electrolyte isolation plate through the anion exchange membrane to react with protons. The long-term operation stability of the membrane electrode structure is remarkably improved.

The invention provides a cylindrical alkaline water electrolytic bath internally embedded with a spiral band, and belongs to the field of electrolysis. The problem that gas is still accumulated on the surfaces of the cathode electrode and the anode electrode of the alkaline water electrolytic bath is solved. In the structure, a space in a cylindrical tank body is divided into a cathode chamber and an anode chamber by a diaphragm, the anode chamber is close to the center of the cylindrical tank body relative to the cathode chamber, the upper end and the lower end of the cathode chamber are respectively communicated with a cathode gas-liquid outlet and a cathode liquid inlet, and the upper end and the lower end of the anode chamber are respectively communicated with an anode gas-liquid outlet and an anode liquid inlet; the anode electrode is located in the anode chamber, and the cathode electrode is located in the cathode chamber; the spiral band structure comprises a cathode spiral band and an anode spiral band, the two sides of the anode spiral band are in contact with the anode electrode and the diaphragm respectively, the two sides of the cathode spiral band are in contact with the cathode electrode and the diaphragm respectively, the cathode spiral band spirally extends around the outer surface of the diaphragm, and the anode spiral band spirally extends around the outer surface of the anode electrode. And the gas coverage rate of the electrode surface can be reduced.

The present disclosure relates to a display device including scan lines, data lines, control signal lines, and subpixels. A first subpixel among the subpixels includes a first light emitting element including an anode electrode and a cathode electrode; a first driving circuit connected to a first scan line of the plurality of scan lines and a first data line of the plurality of data lines and configured to drive the first light emitting element; a first light emitting control transistor configured to be turned on or off according to a first light emitting control signal supplied to its gate node and control a connection between the first light emitting element and the first driving circuit; and a first light emitting control circuit configured to output a first light emitting control signal to the gate node of the first light emitting control transistor.

The invention relates to the technical field of sewage treatment and resource utilization, in particular to a sludge treatment system with an integrated microbial fuel cell and a treatment method of the sludge treatment system. A first cathode plate matched with the sludge compression chamber is arranged at the other end in the sludge compression chamber in a sliding mode, a driving mechanism used for driving the first cathode plate to be close to or away from the first anode plate is arranged on the sludge compression chamber, and a sludge discharge port is formed in the lower portion of the sludge compression chamber. The chlorine salt and the tannic acid are added into the sludge in the pretreatment barrel, the chlorine salt is used for improving the electrochemical wall breaking effect of the sludge, the tannic acid is used for improving the dewatering performance of the sludge and reducing the hydrothermal dewatering temperature, the chlorine salt and the tannic acid are mixed in the pretreatment barrel and then enter the fuel tank for chemical reaction, electric energy is generated, and electric power is provided for the storage battery; the microorganisms can degrade organic matters in the sludge.

The present application provides a high-nickel single-crystal cathode material, a preparation method thereof, a cathode electrode sheet, a secondary battery, and an electrical device. The chemical formula of the high-nickel single-crystal cathode material is Li 1+δ Ni x M y Q 1‑x‑y O 2+ε A α R β X γ , 0.8 ≤ x < 1, 0 < y ≤ 0.2, 0 ≤ δ ≤ 0.15, 0 < ε ≤ 0.2, 0 < α ≤ 0.04, 0 < β ≤ 0.04, 0 ≤ γ ≤ 0.04. The M element and the Q element each independently include one or more of Mn, Co, Al, Ta, Ti, Nb, Ge, Y, Nb, W, Zr, Ce, Ca, Sr, Sc, V, Cr, and Mo; the A element includes one or more of Mg, Ca, Sr, Ba, Ti, Zr, V, Nb, Ta, Mo, W, La, Ce, Sc, and Cr; the R element includes one or more of B and P; the X element includes one or more of Na, K, Mn, Mg, Ca, Sr, and Al; the molar ratio of Ni 3+ on the surface of the high-nickel single-crystal cathode material is 38% - 55%, and the molar ratio of lattice oxygen on the surface is 7% - 15%. The structural defects of the material are significantly reduced, thereby improving its specific capacity and enhancing its cycling performance.

To electrically separate a temperature detection diode from an active portion.SOLUTION: A semiconductor device includes: a semiconductor substrate having an upper surface; an upper-surface cathode region of a first conductivity type provided in the semiconductor substrate and exposed to the upper surface; an upper-surface anode region of a second conductivity type provided in the semiconductor substrate and exposed to the upper surface; an anode electrode connected to the upper-surface anode region; a cathode electrode connected to the upper-surface cathode region; an isolation trench portion provided from the upper surface toward an inside of the semiconductor substrate and surrounding the upper-surface anode region and the upper-surface cathode region on the upper surface; a first bottom region of the second conductivity type provided below the upper-surface anode region and the upper-surface cathode region so as to overlap with the entire upper-surface anode region and upper-surface cathode region and be in contact with a lower end of the isolation trench portion; and a first region of the first conductivity type provided between the upper-surface anode region and the first bottom region.SELECTED DRAWING: Figure 2

To provide an electrochemical hydrogen booster system in which a regenerated hydrogen gas can be utilized without being discharged to the outside as waste and the decline of a hydrogen production efficiency of the electrochemical hydrogen booster system can be suppressed.SOLUTION: An electrochemical hydrogen booster system 10 comprises: a hydrogen booster stack 16 for releasing a hydrogen gas supplied to an anode electrode as a highly pressured hydrogen gas boosted from a cathode electrode through a polymer electrolyte; a hydrogen supply apparatus 14 for supplying the hydrogen gas to the anode electrode of the hydrogen booster stack 16 through a hydrogen supply flow path 60; a PSA apparatus 22 including multiple adsorption towers 24 for dehumidifying the highly pressurized hydrogen gas released from the hydrogen booster stack 16; and a return flow path 94 for recycling a regenerated hydrogen gas utilized for the regeneration in the adsorption tower 24 into the hydrogen supply flow path 60 or the hydrogen supply apparatus 14.SELECTED DRAWING: Figure 1

The invention discloses an electroosmosis repairing device for waste sludge decontamination and dehydration and a using method thereof.The electroosmosis repairing device comprises a bottom plate, an anode shell and a top plate which are sequentially connected, an electric rotor is arranged on the surface of the side, away from the anode shell, of the top plate, and a cathode electrode is arranged in the anode shell; one end of the cathode electrode extends out of the top plate and is connected with a vacuum water storage barrel which is connected with a vacuum pump; the anode shell and the cathode electrode are connected with a power supply; a sludge collecting barrel is arranged on one side of the bottom plate away from the anode shell; and a plurality of rotating rods and water collecting grooves are arranged on the surface of the cathode electrode. The use method comprises the following steps: pouring the waste sludge and the additive; the sludge is stirred; closing the electric rotor, carrying out electroosmosis treatment, and pumping water in vacuum; stirring at intervals; collecting the slurry; and power-off cleaning. According to the invention, reduction solidification, harmless treatment and resource recovery in the sludge treatment process are combined into an integrated process, so that the engineering efficiency is greatly improved, and the energy loss is reduced.

A display device includes a bank layer disposed on an emission area of a substrate and comprising at least one metal layer; a pixel defining layer disposed on the bank layer and defining an opening; and a light-emitting element disposed on the pixel defining layer and comprising a light-emitting layer, a cathode electrode, and an auxiliary electrode. The bank layer includes a first side surface facing a non-emission area of the substrate; and a tip portion protruding further toward the non-emission area than the first side surface. A portion of the tip portion of the bank layer facing the non-emission area is inclined in a direction intersecting the substrate.

The invention belongs to the technical field of photoelectric materials, and relates to an OLED device containing a polydopamine modified carbon nanotube and a preparation method of the OLED device. The anode electrode layer is formed on the substrate; the organic light-emitting unit is formed on the anode electrode layer, the organic light-emitting unit sequentially comprises a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer and an electron injection layer from bottom to top, and the light-emitting layer is made of a composite material containing polydopamine modified carbon nanotubes; and the cathode electrode layer is formed on the organic light-emitting unit. The polydopamine modification is functional modification, and solves the problems of poor dispersibility and interface cohesiveness of the traditional carbon nanotubes in the OLED device, thereby improving the photoelectric properties of the OLED device.

A display device includes a substrate including a light-emitting area and a non-light-emitting area, a pixel-defining layer at the non-light-emitting area, and defining a first opening, a bank layer above the pixel-defining layer, and defining a second opening, an auxiliary electrode above the bank layer, and entirely covering the bank layer, a first cathode electrode at the light-emitting area, and contacting the auxiliary electrode, and a first quantum dot layer above the first cathode electrode.

The invention discloses a method for efficiently co-producing benzoquinone and cyclohexanone based on electrochemical oxidation / reduction of phenol, which adopts an acid-base mixed electrochemical electrolytic tank, the anode electrolyte is alkaline electrolyte, the cathode electrolyte is acidic electrolyte, the anode electrode is nickel foam loaded with nickel sulfide-nickel oxide composite nanosheets, and the cathode electrode is nickel foam loaded with nickel sulfide-nickel oxide composite nanosheets. The cathode electrode is a palladium-nickel-boron nanoparticle alloy with nitrogen-doped porous carbon as a carrier, and the anode electrolyte and the cathode electrolyte are separated by a bipolar membrane; the phenol is added into the anolyte and the catholyte, so that the phenol is electrochemically oxidized by the anode to generate an additional product benzoquinone with high economic value, and meanwhile, the phenol is catalyzed by the cathode to be reduced to generate an additional product cyclohexanone with high economic value. The whole system only needs to consume acid and alkali, the method has the advantages of being good in environmental protection effect and considerable in capacity, and the electrochemical electrolytic tank is good in stability, simple in preparation method, low in cost and easy to achieve large-scale production and has the potential to be applied to large-scale treatment of acid and alkali wastewater containing phenol in industry.

The invention provides a method for preparing a positive electrode material, the positive electrode material, a positive electrode plate, a battery and an electric device. The method for preparing the positive electrode material comprises the following steps: mixing, drying and sintering precursor lithium manganese iron phosphate, a carbon source and a doped element source in a solvent to obtain the positive electrode material, the positive electrode material comprises an inner core and a coating layer coating the inner core, the inner core comprises LiMnxFe1-xPO4, and x is more than 0 and less than 1; the coating layer comprises carbon and doping elements; the doping elements comprise one or more of IIA group elements, IIIA group elements, IVA group elements and transition metal elements. According to the method, the powder resistivity and the specific surface area of the positive electrode material are reduced, and the gram volume and the cycle performance of the battery are improved.

A display device may include a substrate including an emission area and a non-emission area, a bank structure positioned on the emission area of the substrate and having an undercut shape, a pixel electrode positioned on the bank structure, a first light emitting layer positioned on the pixel electrode, a first cathode electrode positioned on the first light emitting layer, a first capping layer positioned on the first cathode electrode, a connection electrode positioned on the first capping layer, a pixel defining layer positioned on the non-emission area of the substrate and defining a first opening, an inorganic layer positioned on the pixel defining layer and defining a second opening, and an organic layer positioned on the inorganic layer.

A device for carbon capture from a CO2 containing source includes a cathode compartment including a cathode electrode, an anode compartment including an anode electrode, a middle compartment which includes an ion conducting layer, a cation exchange membrane, and an anion exchange membrane. The middle compartment is separated from the cathode and anode by the anion and cation exchange membranes. A method for carbon capture from a CO2 containing source includes providing the device, supplying the CO2 containing source to the cathode, reacting the CO2 from the source with an electrochemically generated species from the cathode to form a carbon species or directly reducing the CO2 at the cathode to form the carbon species, driving the carbon species to the middle compartment, and reacting, in the middle compartment, the carbon species with an oxidation product from the anode to form an exit product comprising CO2.

A battery cell includes C cathode electrodes, A anode electrodes, and S separators, where A, C, and S are integers. Each of the A anode electrodes includes an annealed aluminum foil layer and a lithium aluminum layer arranged on one side of the annealed aluminum foil layer.

The present invention relates to the field of semiconductor technology, and in particular to a gallium oxide diode. The gallium oxide diode comprises a gallium oxide wafer, a cathode electrode, an anode electrode and a P-type semiconductor. The gallium oxide wafer comprises a gallium oxide substrate layer and a gallium oxide epitaxial layer. The P-type semiconductor is n layers, where n is the number of layers and n≥2. The present invention provides a multilayer P-type semiconductor, and one end of the P-type semiconductor forms a PN junction with the gallium oxide epitaxial layer, and the PN junction can compensate for the charge on the depletion side. Through the depletion effect of the PN junction, non-ideal factors such as dangling bonds introduced by etching and fixed charges introduced by etching damage in the gallium oxide diode can be passivated, thereby reducing the resistance degradation caused thereby and improving the stability of the device. At the same time, the other end of the P-type semiconductor is connected to the anode electrode to form an equipotential body, which can promote the depletion of the side PN junction, and can also disperse the high electric field of the device from the original side to the end face, thereby achieving the purpose of reducing the electric field strength of the entire device.