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

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 ...

Examples

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...

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 ...

Examples

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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