Non-noble metal catalyst for fuel cells, and its application

A non-precious metal and fuel cell technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, battery electrode, etc., can solve the problems of catalyst loss, stability gap, etc., achieve short cycle time, Wide range of applications and good application effects

Active Publication Date: 2014-11-12
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The good catalytic activity and low price of non-Pt catalysts make them the most powerful candidates to replace Pt-based catalysts. However, non-Pt materials are prone to side reactions under the high-potential weak acid and alkaline conditions of fuel cells. The loss of the catalyst, so there is still a big gap in the stability from the actual application

Method used

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  • Non-noble metal catalyst for fuel cells, and its application
  • Non-noble metal catalyst for fuel cells, and its application
  • Non-noble metal catalyst for fuel cells, and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034]Dissolve 6.16 g of resorcinol in 7 mL of deionized water to form a transparent solution A; add 9.08 g of formaldehyde solution with a mass concentration of 37% to the transparent solution A and stir for 5 hours to prepare the sol-gel precursor B. Add 3 mL of ammonia water with a mass concentration of 28% dropwise in an environment at 20°C and continue to seal and stir to form gel C; transfer gel C to a vacuum oven for 7 days of vacuum drying and aging treatment at 60°C, take it out, and grind it to obtain Solid powder D; carbonize the solid powder D at 800° C. for 1 h in a nitrogen atmosphere to obtain the desired carbon gel carrier. Dissolve 300 mg of 2-(2-pyridine)-benzimidazole in 20 mL of deionized water, and stir for one hour under nitrogen protection until it is completely dissolved. Then add 0.1 g of ferrous sulfate, and continue stirring for two hours until the complex is completely formed. Add 0.1 g of the prepared carbon gel carrier, stir for 2 h under the pro...

Embodiment 2

[0040] Dissolve 6.16 g of resorcinol in 7 mL of deionized water to form a transparent solution A; add 9.08 g of formaldehyde solution with a mass concentration of 37% to the transparent solution A and stir for 5 hours to prepare the sol-gel precursor B. Add 3 mL of ammonia water with a mass concentration of 28% dropwise in an environment at 20°C and continue to seal and stir to form gel C; transfer gel C to a vacuum oven for 7 days of vacuum drying and aging treatment at 60°C, take it out, and grind it to obtain Solid powder D; carbonize the solid powder D at 800° C. for 1 h in a nitrogen atmosphere to obtain the desired carbon gel carrier. Dissolve 300 mg of 2-(2-pyridine)-benzimidazole in 20 mL of deionized water, and stir for one hour under nitrogen protection until it is completely dissolved. Then add 0.1 g of cobalt nitrate and continue to stir for two hours until the complex is completely formed. Add 0.1 g of the prepared carbon gel carrier, stir for 2 h under the prote...

Embodiment 3

[0042] Dissolve 6.16 g of resorcinol in 7 mL of deionized water to form a transparent solution A; add 9.08 g of formaldehyde solution with a mass concentration of 37% to the transparent solution A and stir for 5 hours to prepare the sol-gel precursor B. Add 3 mL of ammonia water with a mass concentration of 28% dropwise in an environment at 20°C and continue to seal and stir to form gel C; transfer gel C to a vacuum oven for 7 days of vacuum drying and aging treatment at 60°C, take it out, and grind it to obtain Solid powder D; carbonize the solid powder D at 800° C. for 1 h in a nitrogen atmosphere to obtain the desired carbon gel carrier. Dissolve 300 mg of 2-(2-pyridine)-benzimidazole in 20 mL of deionized water, and stir for one hour under nitrogen protection until it is completely dissolved. Then add 0.1 g of cobalt nitrate and continue to stir for two hours until the complex is completely formed. Add 0.2 g of the prepared carbon gel carrier, stir for 2 h under the prote...

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Abstract

The invention relates to a fuel cell catalyst, and concretely relates to an application of a novel non-noble metal catalyst in fuel cells. The catalyst comprises resorcinol, formaldehyde, a metal salt and 2-(2-pyridyl)-benzimidazole (C12H4N3). A molar ratio of resorcinol to formaldehyde is 1:5-5:1, and a molar ratio of the metal salt (by metal) to 2-(2-pyridyl)benzimidazole is 1:10-10:1. A highly active non-platinum catalyst is prepared through the steps of carbonizing an organogel in 500-1200DEG C inert gas environment to prepare a carbon gel, dipping a metal organic complex (prepared through coordinating the metal salt with 2-(2-pyridyl)benzimidazole), and pyrolyzing in 500-1200DEG C nitridation atmosphere environment. The non-noble metal catalyst has good redox activity and electrochemical stability in a flue cell cathode catalyst as a nonmetal catalyst.

Description

technical field [0001] The invention relates to a proton exchange membrane fuel cell catalyst, in particular to the application of a novel non-precious metal catalyst in a proton exchange membrane fuel cell. This non-precious metal catalyst can be used as a cathode catalyst for a proton exchange membrane fuel cell. technical background [0002] A fuel cell is an energy conversion device that directly converts the chemical energy of a substance into electrical energy. The fuel cell does not work in the form of a heat engine, and the power generation process is not limited by the Carnot cycle. Most of the chemical energy of the fuel can be directly converted into electrical energy, and the energy conversion efficiency can reach 40-60%. At the same time, the fuel cell power generation process hardly produces harmful substances such as sulfur dioxide, nitrogen oxides, and suspended solids, and does not emit greenhouse gas carbon dioxide, which is in line with the environmental ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J23/75H01M4/90H01M4/86
CPCY02E60/50
Inventor 张华民柳丝丝钟和香邓呈维邱艳玲毛景霞
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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