207 results about "Metal oxide electrode" patented technology

A method for preparing a porous metal film transparent conducting electrode based on a cracking template method comprises the following steps: (1) synthesizing cracking liquid: taking tetrabutyl titanate as a raw material to synthesize microcrystalline titanium dioxide collosol, and obtaining the cracking liquid, (2) fabricating a cracking template: uniformly depositing a cracking film on a substrate with the cracking liquid by a spin-coating method or a lifting method, controlling a temperature condition to allow the cracking film to be cracked naturally to form the cracking template, (3) depositing a metal film: depositing the dense metal film on the cracking template by a magnetron sputtering manner, and (4) removing the cracking template: removing the cracking template from the substrate, cleaning the surface, and forming the porous metal film transparent electrode on the substrate. The transparent conducting electrode prepared with the method has excellent photoelectric properties and higher mechanical and environmental stability; a preparation technology is simple; the resource consumption is low; the transparent conducting electrode is a favorable replacer of the traditional metal oxide electrode; the efficiency of a solar cell can be improved; and the cost can be lowered.

The invention discloses a method for preparing a composite transparent conductive electrode based on a metal grid and a metal nano-wire. The method comprises the following steps: (1) preparing a template solution; (2) manufacturing a sacrificial layer template; (3) depositing a metal thin film; (4) removing the sacrificial layer template; (5) synthesizing the metal nano-wire; and (6) coating the metal nano-wire to prepare the composite transparent conductive electrode. The composite transparent conductive electrode prepared by the method has excellent photoelectric property and environment stability; meanwhile, the electrode in a photoelectric device can be easily in contact with other functional layers; the preparation process is simple and the resource consumption is low; the composite transparent conductive electrode is a good substitute of a traditional metal oxide electrode, and the efficiency of a solar battery can be improved and the cost is reduced.

A metal oxide dispersion comprising metal oxide particles with a necking structure, and a solvent, wherein the liquid droplet contact angle of the metal oxide dispersion to an ITO film (Indium-Tin Oxide type film) formed is from 0 to 60°. A metal oxide dispersion for the production of a dye-sensitized solar cell electrode, comprising Metal Oxide Particle Group F having a necking structure formed by m connected particles, Metal Oxide Particle Group G having only 0.2 m or less connected particles, and a solvent, and being formable into a film at 200° C. or less. A metal oxide electrode comprising an electrically conducting substrate having thereon a metal oxide layer comprising metal oxide particles bound by a binder, wherein the binder content is from 0.005 to 5 mass % based on the metal oxide film and the metal oxide layer has a pencil scratch strength of H or more according to JIS5600.

The invention provides a method for electrochemical oxidation treatment of waste water containing anthraquinone dye, and relates to the technical field of water treatment. In the method, a titanium-based metal oxide electrode is taken as an anode, copper or stainless steel is taken as a cathode, a flat plate or three-dimensional fixed bed is taken as an electrochemical reactor, under conditions of the current density of between 10 and 1,500A/m, the content of supporting electrolyte, namely Na2SO4 of between 1 and 20g/L and the temperature of the waste water of between 5 and 95 DEG C, the electrochemical oxidation treatment is performed. The method has the advantages of the degradation of the anthraquinone dye in a short time, quick reaction rate, good decolorization effect, high decrease rate of COD, simple technological flow, little equipment investment, easy operational control and easy industrialized application.

The present invention relates to a method for manufacturing a nano-structured metal oxide electrode, and in particular, to a method for manufacturing a metal oxide electrode having a few tens or hundreds of nanometers in diameter that is well adapted to an electrode of a supercapacitor using an alumina or polymer membrane having nano-sized pores as a template. Preferred methods for manufacturing a nano-structured metal oxide electrode comprises steps of preparing an alumina or polymer template having a plurality of nano-sized pores; sputtering a metal acting as a current collector with a few tens of μm of thickness in one surface of the alumina template; charging the template, after the sputtering step, by submerging it into a precipitation solution having a metal salt dissolved therein, and applying a static current or electrode electric potential thereby electrochemically precipitating a metal oxide in the nano-sized pores of the template; a step in which the composite of the alumina or polymer template and the metal oxide are contacted with a sodium hydroxide solution or other base to remove the alumina or polymer template; and an optional drying step to provide the nano-structured metal oxide electrode.

The invention discloses a method for preparing a high-performance metallic network transparent conducting electrode through a metal plating method. The method includes the following steps: (1) a fracturing sacrificial layer template is prepared on a substrate; (2) a metallic conducting seed layer is deposited on the fracturing sacrificial layer template; (3) the fracturing sacrificial layer is removed to form a metallic conducting seed layer network; and (4) metal is continuously deposited on the metallic conducting seed layer through the metal plating method, a continuous metal network with the larger thickness and the lower resistance is formed, and therefore the high-performance metallic network transparent conducting electrode is prepared. The transparent conducting electrode is mainly obtained through the metal plating method, the metal plating method belongs to a chemical liquid phase method, the preparing process is simple, resource consumption is low, and the high-performance metallic network transparent conducting electrode is suitable for large-area continuous preparation. The prepared transparent conducting electrode has the extremely-low surface resistance and the better light transmittance; meanwhile, the mechanical property and the environmental stability are good, the transparent conducting electrode is a beneficial replacer of a traditional metallic oxide electrode, and it is expected that the method is used for industrialization of the large-area transparent conducting electrode.

A capacitor of a memory device, and a method of fabricating the same, includes a lower electrode electrically coupled to a doping region of a transistor structure, the lower electrode having a metal electrode and a metal oxide electrode, a ferroelectric layer covering and extending laterally along the lower electrode, and an upper electrode formed on the ferroelectric layer.

The invention discloses a process and method of electrolyzing and oxidizing phenol-containing waste water using Ti-base Sn-Sb metal oxide electrode as anode, belonging to water processing field. And the process uses Ti-base Sn-Sb metal oxide electrode as anode and Cu (or stainless steel) as cathode to electrolyze and oxidize the phenol-containing waste water, where the Ti-base Sn-Sb metal oxide anode is made from polymeric precursor by thermolysis. And it can fast degrade the phenol and the degradation intermediate product of the phenol-benzoquinone into aliphatic organic matters to be biochemically processed, thus able to largely raise follow-up biochemical processing efficiency. And it has simple process flow, strong operability, high current efficiency, and stable and reliable processing effect, easy to implement industrialized application.

Disclosed are viologen derivatives as an electrochromic material having improved stability and lifetime, a metal oxide electrode including the same, and an electrochromic device using the viologen derivative as an electrochromic material. The viologen derivative includes a suitable regulator group capable of increasing ΔE that is a potential difference between E₁ (potential at the first redox reaction) and E₂ (potential at the second redox reaction). When ΔE increases, the mole fraction of viologen molecules present in the second reduction state decreases. Therefore, it is possible to lower the mole fraction of viologen molecules present in an irreversibly reduced state at an applied potential, thereby increasing the lifetime of an electrochromic material and an electrochromic device.

The invention belongs to the preparation field of the anode material of a lithium ion battery, and in particular relates to a method for preparing metal oxide electrode material with a nanometer structure by utilizing the in-situ synthesis method. The internal structure and the dimension of a hollow micro-sphere obtained are controlled through adjusting the pH value of a system by utilizing hydrochloric acid. Raw materials in the invention are common and are easy to obtain; an organic solvent is not required during the preparation process; the preparation process is simple; the synthesis of template materials and the participation of a surface active agent are not required during the synthetic process; the requirements to the device are low, the time consumption is less and the preparation process is simple; and a main by-product during the preparation process is water and carbon dioxide and is environment-friendly. The raw materials used in the invention are common; and the preparation conditions are not restricted by areas. The hollow tin dioxide micro-spheres have higher application prospect in the filed of electrode material, catalyst carriers and the like. The method has the advantages of cheap and easily obtained raw materials, simple preparation process, and unrestricted preparation conditions by areas, and is suitable for massive industrial production.

The invention relates to a positive and negative alternate electrolysis-resistance metal oxide electrode, which is suitable to be used in the field of electrochemical industry, such as high-speed steel plate plating, sea water electrolysis marine biofouling-resistance devices, sodium hypochlorite electrolysis production devices, sewage treatment, cathodic protection and other technical fields of electrochemistry. The positive and negative alternate electrolysis-resistance metal oxide electrode consists of a titanium substrate and a platinum-containing multielement mixed metal oxide coating formed on the titanium substrate by a pyrolytic process or a sol-gel method, wherein the mass percentage purity of the metal titanium substrate is over 99 percent; valve metal titanium has excellent mechanical property and machinability and is suitable for making electrode substrates, and the electrode titanium substrate is netty, platy, tubular or bar structural shapes; the platinum-containing multielement mixed metal oxide coating is IrO2-Ta2O5-PtOx, wherein the mole ratio of the Ir to Ta to Pt is (40-70):(20-40):(1-20); and the metal oxide electrode is obviously improved in positive and negative alternate electrolysis resistance and comprehensive performance, and is simple in structure and long in service life.

An all solid state rechargeable oxide-ion (ROB) battery (30) has a thermal energy storage (TES) unit (20) between two oxide-ion cells (22, 24) with metal-metal oxide electrodes (34, 36, 40, 42) on opposite sides of an anion conducting solid electrolyte (32,38) where none of the electrodes is contact with air.

The invention discloses a polyhedron bimetallic oxide as well as a preparation method and application thereof. The polyhedron bimetallic oxide is prepared by the following steps: with a zeolite imidazate skeleton structure material serving as a raw material, partially replacing metals in the zeolite imidazate skeleton structure material with a metal; heating for oxidation to obtain the polyhedronbimetallic oxide. Finally, mixed liquid is prepared by adopting the polyhedron bimetallic oxide as an active substance, carbon black as a conductive agent and polytetrafluoroethylene as an adhesive and adding a solvent N,N-dimethylpyrrolidone; the obtained mixed liquid is dropwise added to a nickel piece which is then dried to obtain a polyhedron bimetallic oxide electrode. The preparation methoddisclosed by the invention has the advantages of mild conditions, simple technology and controllable operation; when densities of the charge current and discharge current of the prepared polyhedron bimetallic oxide electrode are 1A/g in 1mol/L NaOH electrolyte respectively, the specific capacitance reaches 510F/g respectively; after 3,000 times of charging and discharging, the specific capacitanceis attenuated by 25%.

The invention relates to a novel composite electrode material and a preparation method thereof, pertaining to the technical field of electrochemical electrode materials. Aiming at the problems of poor compactness of coating, low generating capacity and complex technology of the existing mixed metal oxides, the invention utilizes the high strength, good conductibitily, and the regulating effect to the traditional mixed metal oxide coating solution viscosity and leveling property of a carbon nano tube to prepare a composite mixed metal oxide electrode material with even and smooth appearance, compact microstructure, good mechanical property, good inoxidability, high generating capacity and reinforced carbon nano tube. The preparation process comprises the following steps: a mixed metal oxide precursor solution containing 0.1g/L to 5g/L of single-walled or multi-walled carbon nano tube that is processed with purification, short cutting and dispersion is coated on a conductive substrate surface which is roughened; the substrate is dried after being roasted at the temperature of 100 to 200 DEG C for 5 to 15min, sintered for 5 to 10min at the temperature of 400 to 600 DEG C; the coating and sintering steps are repeated till the required electrode coating thickness is reached; and finally the substrate is sintered for 50 to 150min at the temperature of 400 to 600 DEG C. As the coating solution velocity of the carbon nano tube is increased, the smoothness of the solution is improved, and the thickness and leveling property of the single-walled electrode coating are improved, the invention shortens the preparation time of electrode coatings with the same thickness, and leads the yield and production stability to be improved.

The invention relates to a preparation method of a rare earth oxide cerium oxide (Ce2O3) modified high catalytic activity Ti-based nano-PbO2 modified electrode material. One of the key issues involved is preparation of a rare earth cerium oxide (Ce2O3) modified lead electrode material. The invention employs an electrodeposition process and selects a rare earth oxide cerium oxide to modify a Ti/PbO2 metal oxide electrode. The method provided in the invention comprises: first, during preparation of a titanium-based PbO2 electrode, in an alkaline electroplating solution, conducting electroplating firstly at a high current density and then at a small current density to get a transition layer, i.e. an alpha-PbO2 layer, next, in an acidic electroplating solution, electroplating beta 3-PbO2 having catalytic activity on the well electroplated alpha-PbO2 layer, and finally in a dilute nitric acid solution containing rare earth cerium nitrate, employing a cyclic voltammetric electroplating process to modify a Ti/PbO2 electrode, thus obtaining the cerium oxide (Ce2O3)-doped and modified high catalytic activity Ti/PbO2-Ce2O3 modified electrode material.

Waste water to be treated is introduced into a first electrolytic bath, and then, hydroxide iron particles are supplied into the waste water through the electrolysis reaction at iron electrodes. Impurities such as organic compounds, phosphoric compounds, persistent compounds and the like are physically absorbed onto the hydroxide iron particles. Then, the hydroxide iron particles (flocks) with absorbed impurities are discharged via a drain valve, to purify the waste water to some degree. The waste water is introduced into a second electrolytic bath with a water pump. In the second electrolytic bath, the remnant impurities in the waste water are chemically dissolved and removed through the oxidation reduction reaction between the surfaces of metallic oxide electrodes and the waste water.

The invention discloses a preparation method of a foam nickel-loaded composite nano metal oxide electrode material, and aims to solve the technical problem that the existing preparation method of an existing electrode material has poor practicability. The preparation method disclosed by the invention is characterized in that In the technical scheme, foam nickel is adopted as a substrate, and ZnO nanowire and ZIFs -derived Co3O4/NiCo2O4 doubel-shell nano cage structure nano particle material are loaded; ZnO/Co3O4/NiCo2O4/foam nickel is prepared in combination with the large specific surface area and quick electron transmission performance of ZnO as well as the high porosity and excellent catalytic performance of the ZIFs -derived Co3O4/NiCo2O4 double-shell nano cage., ZnO/Co3O4/NiCo2O4/foamnickelwhich has the advantages of goodhigh electrocatalytic activity on H2O2, high sensitivity, low detection limit, wide detection range, goodhigh stability and the like, and avoids the technical problem of frequent agglomeration caused byof a powder modified electrode.

The invention discloses a technique to preparing metallic oxide electrode with poly forerunner body thermal decomposition method, which comprise the following steps: preparing poly forerunner body solution with metallic element; multiple-coating poly forerunner body solution on ground-mass; thermal-decompositing; firing; getting the product; belonging to preparing technical domain of electric pole material; reacting polybasic carboxylic acid , polyatomic alcohol and metallic compound; getting the poly forerunner body solution; making the ground-mass as one of titanium, tantalum, niobium, zirconium and non-corrodible steel; This product possesses high electrocatalysis activity, good conductive property, long age and low cost, which can be used to electrochemical synthesis and negative pole protecting domains.

The invention discloses a preparation method for a titanium dioxide nanotube loaded with a macroporous antimony tin oxide, relates to the technical field of preparation of metal oxide electrode materials and also relates to the technical field of treatment of phenolic waste water. The preparation method comprises the following steps: immersing the titanium dioxide nanotube filled with an antimony tin oxide into highly dispersed polystyrene microsphere alcohol liquor, drying and forming a film at a constant temperature to prepare the titanium dioxide nanotube loaded with an opal polystyrene template; and then, coating polymer precursor liquor on the opal polystyrene template of the titanium dioxide nanotube loaded with the opal polystyrene template, sintering at a high temperature to remove polystyrene microspheres to obtain an antimony tin oxide material with an inverse opal macroporous structure, which takes the titanium dioxide nanotube as a base body. According to the preparation method, a macroporous antimony tin oxide film material which is compact, uniform and ordered is prepared on the base body of the titanium dioxide nanotube by virtue of a polymer precursor process. The preparation method is convenient for industrial production and relatively low in cost.

The invention belongs to the technical field of lithium ion batteries, and particularly discloses a lithium ion battery additive, electrolyte and anode slurry. The additive comprises one or more bismaleimide compound with a structure in a general formula I or general formula II. The electrolyte comprises electrolyte salt, a non-aqueous solvent and the additive. The anode slurry comprises an anode active material, a conductive agent, an adhesive and the additive. The structure of the additive contains a large number of unshared ion pairs and polar functional groups, the additive has strong interaction force with a metal oxide electrode material and a current collector, dispersity of metal oxide anode particles can be improved in the anode slurry, the bonding power between an electrode material coating and the current collector is remarkably improved, and the cycling performance is improved. The structure of the additive further contains a large number of double bonds, electrochemically oxidative polymerization can be realized under high voltage, a more stable SEI (solid electrolyte interface) film can be formed on the surface of the anode material, and exothermic auxiliary reaction of the anode material and the electrolyte at high temperature and under high voltage is effectively weakened.

The invention discloses an embedded NASICON-based H2 sensor with a compound metal oxide as a passivation reference electrode, and a preparation method of the embedded NASICON-based H2 sensor, belonging to the technical field of gas sensors. The sensor is composed of an Al2O3 ceramic tube used as an insulating layer, a nickel-cadmium alloy heating wire arranged inside the Al2O3 ceramic tube, a first NASICON ion conducting layer coated on the surface of the Al2O3 ceramic tube, a sensitive electrode prepared on the surface of the NASICON ion conducting layer, a second NASICON ion conducting layer coated on the sensitive electrode and the surface of the first NASICON ion conducting layer, and a passivation reference electrode prepared on the surface of the second NASICON ion conducting layer, wherein the sensitive electrode is made of a ring-shaped netted Au material, and the passivation reference electrode is composed of the ring-shaped netted Au material and a compound metal oxide electrode material CoCrxMn2-xO4 layer coated on the Au material. The sensor can be used for detecting the hydrogen concentration in atmosphere.