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Fuel cell oxygen-reduction catalyst taking protein as raw material and preparation method of fuel cell oxygen-reduction catalyst

A fuel cell and protein technology, which is applied in the preparation/purification of carbon, battery electrodes, circuits, etc., can solve the problems of insufficient durability, high cost of oxygen reduction reaction catalysts, and low activity, and is environmentally friendly and conducive to popularization and application , The synthetic process is simple and controllable

Active Publication Date: 2017-06-13
SHENZHEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a fuel cell oxygen reduction catalyst and preparation method using protein as a raw material, aiming to solve the high cost, low activity and insufficient durability of the existing oxygen reduction reaction catalyst The problem

Method used

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  • Fuel cell oxygen-reduction catalyst taking protein as raw material and preparation method of fuel cell oxygen-reduction catalyst
  • Fuel cell oxygen-reduction catalyst taking protein as raw material and preparation method of fuel cell oxygen-reduction catalyst
  • Fuel cell oxygen-reduction catalyst taking protein as raw material and preparation method of fuel cell oxygen-reduction catalyst

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preparation example Construction

[0029] A method for preparing a fuel cell oxygen reduction catalyst using protein as a raw material provided by the present invention, comprising:

[0030] Step A, adding protein into deionized water, stirring for 30-60 minutes to obtain a uniform protein solution;

[0031] Step B. Add conductive carbon black and transition metal salt solution to the above protein solution, stir evenly, and heat in multiple stages until the solvent is evaporated to dryness at 120-240° C. to obtain a solid mixture; wherein, the mass of conductive carbon black and protein The ratio is 0.5~1, and the mass ratio of the metal ion in the transition metal salt to the protein is 0.05~0.2.

[0032] Step C, under the protection of an inert atmosphere, carbonize the above solid mixture at 700-1100°C for 1-3 hours to obtain a carbonized product;

[0033] Step D, grinding and sieving the above carbonized product to obtain an oxygen reduction catalyst.

[0034] In step A, the protein is first added to dei...

Embodiment 1

[0042] First, weigh 1g bovine serum albumin (BSA) powder and place it in a beaker, add 100mL deionized water to fully dissolve it. After that, weigh 483mg FeCl 3 ·6H 2 O in a beaker, add 20mL of deionized water, dissolve fully and add to the protein solution. Next, weigh 1 g of EC-300J commercial carbon black, add it into the above mixed solution, and stir it magnetically for 8 hours to make it evenly mixed. Then the beaker was transferred to a forced air drying oven, respectively, at 120 o C. 180 o C and 240 o Heating at constant temperature in an air atmosphere under C condition for 24h, 24h and 9h to achieve the effect of removing solvent and stabilizing solute mixture. Finally, the black solid was transferred to a porcelain boat, and the above magnetic boat was placed in a tube furnace at 900 o C under argon atmosphere at high temperature for 1h. After grinding and passing through a 200-mesh sieve to remove impurities with larger particles, the Fe / BSA / C catalyst is ...

Embodiment 2

[0048] First, weigh 1g bovine serum albumin (BSA) powder and place it in a beaker, add 100mL deionized water to fully dissolve it. Next, weigh 267mg CuCl 2 2H 2 In the beaker, add 20mL deionized water, fully dissolve and add to the protein solution. Next, weigh 1 g of EC-300J commercial carbon black, add it into the above mixed solution, and stir it magnetically for 8 hours to make it evenly mixed. Then the beaker was transferred to a forced air drying oven, respectively, at 120 o C. 180 o C and 240 o Heating at constant temperature in an air atmosphere under C condition for 24h, 24h and 9h to achieve the effect of removing solvent and stabilizing solute mixture. Finally, the black solid is transferred to a porcelain boat, and the above-mentioned magnetic boat is placed in a tube furnace at 900 o C under argon atmosphere at high temperature for 1h. After grinding and passing through a 200-mesh sieve to remove impurities with larger particles, the Cu / BSA / C catalyst is ob...

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Abstract

The invention provides a fuel cell oxygen-reduction catalyst taking protein as a raw material and a preparation method of the fuel cell oxygen-reduction catalyst. The preparation method comprises the steps of firstly, adding the protein into deionized water, and performing stirring for 30-60 minutes to obtain an uniform protein solution; secondly, adding conductive carbon black and a transition metal salt into the protein solution, heating the mixture according to many segments in an environment of 120-240 DEG C after uniform stirring until the solvent is evaporated to obtain a solid mixture; thirdly, carbonizing the solid mixture for 1-3 hours at 700-1,100 DEG C under protection of an inert atmosphere to obtain a carbonization product; and finally, sieving the carbonization product after grinding to obtain the oxygen-reduction catalyst. According to the method, the protein is used as the raw material to prepare the oxygen-reduction catalyst, the oxygen-reduction catalyst is low in cost, is also environmental-friendly, is also relatively good in catalytic performance and is approximate to a limited current of a precious metal Pt catalyst, and promotion and application are convenient.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a fuel cell oxygen reduction catalyst using protein as a raw material and a preparation method. Background technique [0002] Proton exchange membrane fuel cell, as a representative of fuel cells, can effectively convert chemical energy into electrical energy. Because of its high energy conversion efficiency, high power density, fast start-up, and zero emissions, it is considered to be a mobile energy source with good application prospects. device. However, proton exchange membrane fuel cells have not been widely used because a large amount of Pt-based catalysts are required to complete the oxygen reduction reaction in the working process. However, the high cost, low activity and insufficient durability of Pt-based oxygen reduction reaction catalysts limit the further development and application of proton exchange membrane fuel cells. Therefore, research on the preparation of n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90C01B32/05
CPCC01P2004/04H01M4/9083Y02E60/50
Inventor 何传新刘金鑫范梁栋张黔玲刘剑洪
Owner SHENZHEN UNIV
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