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Carbon gel catalyst for fuel batteries and application thereof

A technology of fuel cells and catalysts, applied in the direction of physical/chemical process catalysts, battery electrodes, circuits, etc., can solve the problems of poor stability and low activity, and achieve the effects of improving stability, high catalytic activity, and improving uniformity

Active Publication Date: 2014-03-26
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 carbon material itself has no activity for the oxygen reduction reaction, but by improving the structure, composition, and surface functional groups of the carbon material through doping and modification methods, the carbon material itself can be catalytically active for the oxygen reduction reaction, but the activity is low and the stability is poor.

Method used

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  • Carbon gel catalyst for fuel batteries and application thereof
  • Carbon gel catalyst for fuel batteries and application thereof
  • Carbon gel catalyst for fuel batteries and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Dissolve 6.16g of resorcinol in 7mL of deionized water to form a transparent solution A; take 0.815g of cobalt nitrate hexahydrate solid and add it to the above transparent solution A while stirring, and mix well to obtain solution B; 9.08g of formaldehyde solution with a mass concentration of 37% was stirred for 5h to prepare a sol-gel precursor. Take 2.128ml of zirconium oxynitrate solution of 20mg / ml (based on the mass of metal zirconium), add 1.5M dilute ammonia solution drop by drop in a 60°C water bath and stir to adjust the pH of the zirconium oxynitrate / ammonia water complex to 7 . The prepared zirconium oxynitrate / ammonia water complex was added dropwise to the sol-gel precursor under vigorous stirring to obtain a homogeneous mixture C, and 3 mL of ammonia water with a mass concentration of 28% was added dropwise in an environment of 20 ° C and continued to seal and stir, and the reaction Gel D was formed; the gel D was transferred to a vacuum drying oven for ...

Embodiment 2

[0051] Dissolve 6.16g of resorcinol in 7mL of deionized water to form a transparent solution A; take 0.697g of cobalt acetate tetrahydrate solid and add it to the above transparent solution A while stirring, and mix well to obtain solution B; 9.08g of formaldehyde solution with a mass concentration of 37% was stirred for 5h to prepare a sol-gel precursor. Take 2.128ml of zirconium oxynitrate solution of 20mg / ml (based on the mass of metal zirconium), add 1.5M dilute ammonia solution drop by drop in a 60°C water bath and stir to adjust the pH of the zirconium oxynitrate / ammonia water complex to 7 . The prepared zirconium oxynitrate / ammonia water complex was added dropwise to the sol-gel precursor under vigorous stirring to obtain a homogeneous mixture C, and 3 mL of ammonia water with a mass concentration of 28% was added dropwise in an environment of 20 ° C and continued to seal and stir, and the reaction Gel D was formed; the gel D was transferred to a vacuum drying oven for...

Embodiment 3

[0053] Dissolve 6.16g of resorcinol in 7mL of deionized water to form a transparent solution A; take 0.697g of cobalt acetate tetrahydrate solid and add it to the above transparent solution A while stirring, and mix well to obtain solution B; 9.08g of formaldehyde solution with a mass concentration of 37% was stirred for 5h to prepare a sol-gel precursor. Take 2.128ml of zirconium oxychloride solution of 20mg / ml (based on the mass of metal zirconium), add 1.5M dilute ammonia solution drop by drop in a water bath at 60°C and stir to adjust the pH of the zirconium oxychloride / ammonia water complex =7. The prepared zirconium oxychloride / ammonia water complex was added dropwise to the sol-gel precursor under vigorous stirring to obtain a homogeneous mixture C, and 3 mL of ammonia water with a mass concentration of 28% was added dropwise in an environment of 20 ° C and continued to seal and stir. The reaction forms gel D; transfer the gel D to a vacuum drying oven for 7 days of va...

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Abstract

The invention relates to a carbon gel catalyst for fuel batteries and application thereof. By adopting resorcinol, formaldehyde, a coordination compound, a metal salt and a metal organic compound as raw materials, the carbon gel catalyst which is controllable and adjustable in pore structure and specific surface area is prepared through controlling the adding of the metal salt of different amounts and adjusting the precursor solution concentration, the reaction environment temperature and the carbonization and nitridation treatment temperature. When serving as a nonmetal catalyst for a proton exchange membrane flue battery cathode catalyst, the carbon gel catalyst disclosed by the invention shows good corrosion resistance and stability after long-term use; the preparation process of the catalyst is simple in flow, short in period and friendly to environment; the catalyst is low in cost and wide in application range.

Description

technical field [0001] The invention relates to the field of fuel cell electrocatalysts, in particular to the application of a carbon xerogel catalyst in proton exchange membrane fuel cells. 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 protection concept of today's society. At the same time, the fuel cell requires less auxiliary equipment, saves a large number...

Claims

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Application Information

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IPC IPC(8): H01M4/90B01J27/24
CPCY02E60/50H01M4/9091H01M4/96
Inventor 张华民柳丝丝钟和香许壮邱艳玲
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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