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Positive electrode for alkaline water electrolysis and method for producing positive electrode for alkaline water electrolysis

A manufacturing method, water electrolysis technology, applied in the direction of electrodes, electrolysis components, electrolysis process, etc., can solve the problems of high overvoltage and poor productivity, and achieve the effects of low overvoltage, improved corrosion resistance, and firm bonding strength

Active Publication Date: 2018-11-09
DE NORA PERMELEC LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for Ni electrodes, the overvoltage is high and the productivity is poor

Method used

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  • Positive electrode for alkaline water electrolysis and method for producing positive electrode for alkaline water electrolysis
  • Positive electrode for alkaline water electrolysis and method for producing positive electrode for alkaline water electrolysis
  • Positive electrode for alkaline water electrolysis and method for producing positive electrode for alkaline water electrolysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] Example 1 shows the use of NiCo as the first catalyst component 2 o 4 , IrO is used as the second catalyst component 2 . An example in which the calcination temperature is set to 350° C., and the first catalyst component and the second catalyst component are formed into a laminated structure.

Embodiment 2

[0112] Example 2 shows the use of NiCo as the first catalyst component 2 o 4 , IrO is used as the second catalyst component 2 . An example in which the calcination temperature is set to 450° C., and the first catalyst component and the second catalyst component are formed into a laminated structure.

Embodiment 3

[0113] Example 3 shows the use of NiCo as the first catalyst component 2 o 4 , IrO is used as the second catalyst component 2 . An example in which the calcination temperature is set to 550° C., and the first catalyst component and the second catalyst component are formed into a laminated structure.

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Abstract

Provided are: a positive electrode for alkaline water electrolysis, which is obtained at low cost and is capable of achieving low overvoltage; and a method for producing a positive electrode for alkaline water electrolysis. A positive electrode for alkaline water electrolysis, which is characterized by forming, on the surface of a conductive base 1 that is formed from nickel or a nickel-based alloy, electrode catalyst layers 2, 3 that are formed from a first catalyst component comprising a nickel cobalt spinel oxide or a lanthanoid nickel cobalt perovskite oxide and a second catalyst componentcomprising at least one of iridium oxide and ruthenium oxide; and a method for producing this positive electrode for alkaline water electrolysis.

Description

technical field [0001] The present invention relates to an anode used in alkaline water electrolysis, in particular to an anode for alkaline water electrolysis requiring low cell voltage and a method for producing the same. Background technique [0002] Hydrogen is a secondary energy that is suitable for storage and transportation and has a small environmental burden. Therefore, a hydrogen energy system using hydrogen as an energy carrier is attracting attention. At present, hydrogen is mainly produced by steam reforming of fossil fuels and the like. From the viewpoint of global warming and the depletion of fossil fuels, the importance of alkaline water electrolysis using renewable energy such as solar cells, wind power, and hydroelectric power as a power source is increasing. [0003] There are roughly two types of water electrolysis. One is alkaline water electrolysis, which uses a high-concentration alkaline aqueous solution in the electrolyte. The other is a solid po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/06C25B1/10C25B9/00
CPCY02P20/133Y02E60/36C25B1/04C25B9/73C25B11/057C25B11/093C25B11/053C25B11/051C25B9/00B01J23/002B01J23/462B01J23/468B01J2523/37B01J2523/845B01J2523/847C01P2002/36
Inventor 加藤昭博辻井文哉亀井裕次下村育生永岛郁男
Owner DE NORA PERMELEC LTD
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