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Non-noble metal catalytic electrode, film electrode and preparation method of non-noble metal catalytic electrode

A non-precious metal, catalytic electrode technology, used in battery electrodes, circuits, fuel cells, etc., can solve the problems of time-consuming preparation methods, catalyst loss, etc., achieve excellent conductivity, simplify electrode manufacturing steps, and promote the effect of industrialization development.

Inactive Publication Date: 2019-02-15
CHINA-SINGAPORE INT JOINT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current preparation methods of these catalytic layers and electrodes are time-consuming and cause unavoidable loss of catalysts.

Method used

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  • Non-noble metal catalytic electrode, film electrode and preparation method of non-noble metal catalytic electrode
  • Non-noble metal catalytic electrode, film electrode and preparation method of non-noble metal catalytic electrode
  • Non-noble metal catalytic electrode, film electrode and preparation method of non-noble metal catalytic electrode

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Preparation of Carbon Paper Supported Cobalt-Molybdenum-Doped Highly Nitrided Carbon Catalytic (MoCo-N-C) Electrodes

[0039] 20.0 g of sodium chloride was dissolved in 100 ml of deionized water, then 9.0 g of pentaethylenehexamine was added dropwise to it, and after stirring for one hour, 15.0 g of MCM-41 was added and ultrasonically dispersed for two hours to obtain MCM- 41 of the ultrafine slurry. Dissolve 2.2 g of cobalt chloride (CoCl) in 30 ml of ethanol 2 ·6H 2 O) and 1.6 g of ammonium molybdate ((NH 4 ) 6 Mo 7 O 24 ·4H 2 0), mixed evenly and added to the above MCM-41 slurry, and stirred overnight. The viscous paste of the mixture after rotary evaporation at 50°C to remove most of the solvent was spread evenly on a carbon paper diffusion layer of 80 mm × 50 mm, and freeze-dried to remove the remaining solvent. The carbon paper was then placed in a tube furnace for temperature-programmed heat treatment with high-purity nitrogen: from room temperature to 30...

Embodiment 2

[0042] Preparation of Carbon Paper Supported Cobalt-N-Doped Highly Nitrided Carbon Catalytic (Co-N-C) Electrodes

[0043] In a typical example of preparing a cobalt nitrogen doped non-noble metal catalytic electrode, 2.1 g of cobalt chloride (CoCl 2 ·6H 2 O) was used as the cobalt source, 4.4 g of Pentaethylenehexamine was used as the nitrogen source and carbon source material, and 0.5 g of graphene was used as the carbon source material. First, pentaethylene hexamine was dissolved in 50 ml of sodium chloride (12.0 g) aqueous solution, stirred for half an hour to mix evenly, then 2.5 g of pre-ground and dried MCM41 was added to ultrasonically disperse for half an hour, and stirred for half an hour; It was added to the above solution, fully dispersed with ultrasonic stirring, and an aqueous solution of cobalt chloride (50 ml) was added dropwise and stirred overnight. The water was removed by drying at 50°C on a rotary evaporator, and the black powder was collected by freeze-d...

Embodiment 3

[0045] Preparation of carbon paper-supported cobalt-nitrogen double-doped non-noble metal carbon catalytic (Co-N-C) electrodes

[0046] In a typical example of preparing cobalt-nitrogen double-doped non-noble metal catalytic electrodes, pentaethylenehexamine was used as carbon and nitrogen source, cobalt nitrate (Co(NO) 3 ) 2 ·6H 2 O) was used as a cobalt source. First, dissolve 1.9 g of pentaethylene hexamine in 50 ml of water and stir for 0.5 hours to mix evenly; then add 2.3 g of pre-ground and dried MCM-41, ultrasonically shake and stir for 2 hours to make it evenly dispersed and keep stirring; thereafter Dissolve 2.3 g of polyvinylpyrrolidone (PVP) in 50 ml of water, add 1.5 g of cobalt nitrate and 1.6 g of zinc nitrate (Zn(NO) 3 ) 2 ·6H 2 O), ultrasonically vibrate and stir for one hour to make the three evenly mixed; then slowly drop the aqueous solution containing cobalt nitrate, zinc nitrate and PVP into the slurry containing pentaethylenehexamine, and stir at ro...

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Abstract

The invention discloses a non-noble metal catalytic electrode, a film electrode and a preparation method of the non-noble metal catalytic electrode, wherein a catalytic layer on the surface of an electrode diffusion layer of the non-noble metal catalytic electrode is formed by thermally treating a precursor mixture of a catalytic layer material at the high temperature and growing or loading a catalytic ingredient on the electrode diffusion layer, the precursor mixture of the catalytic layer material comprises a transition metal precursor, a carbon source material and a nitrogen source material, the catalytic layer is porous ordered large-specific surface area non-platinum high-nitrogen carbon based catalytic ingredient containing transition metal, the catalytic activity is mainly from a multi-component system comprising carbon, nitrogen and the transition metal, a catalytic region is porous and highly ordered, has the characteristic of high hydrophobicity and the excellent performanceof conduction of gas and electrons, the integrally direct forming preparation method directly loads or grows a catalytic activity component on the surface of the electrode diffusion surface at one time, the time is saved, the production steps of the electrode are simplified, the waste of a catalyst is avoided, and the preparation method has the advantages of simple preparation, low cost and excellent performances.

Description

technical field [0001] The present invention relates to the field of fuel cell technology, and more particularly, to a non-precious metal catalytic electrode, a membrane electrode and a preparation method thereof. Background technique [0002] At present, countries in the world, especially developed economies such as China, the United States, and Japan, are increasingly consuming fossil fuels. However, the reserves of fossil fuels on the earth are limited and are decreasing, and the air pollution caused by the burning of fossil fuels is also becoming more and more serious. With the gradual enhancement of people's awareness of environmental protection, environmentally friendly and renewable clean energy and energy conversion technologies are gradually welcomed by people. As a research hotspot of new energy technology, fuel cells (fuel cells) are electrochemical energy conversion devices that are most in line with the concept of sustainable development. It is one of the most ...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M4/90H01M4/88H01M8/1004
CPCH01M4/8605H01M4/88H01M4/8882H01M4/9083H01M8/1004Y02E60/50Y02P70/50
Inventor 周卫江曾少华余金礼
Owner CHINA-SINGAPORE INT JOINT RES INST
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