Preparation method ofc

A fuel cell cathode and heterogeneous structure technology, applied in battery electrodes, structural parts, circuits, etc., can solve the problems of high preparation cost and complicated preparation method, and achieve the effects of low preparation cost, simple preparation method and reasonable design

Active Publication Date: 2021-07-09
TAIYUAN UNIV OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing a fuel cell cathode oxygen reduction catalyst, which uses a cheap and easy-to-obtain non-noble metal catalyst to prepare Ni(OH) with high catalytic activity through a simple one-step alcohol-thermal method. 2 / ZrO 2 Heterostructure fuel cell cathode oxygen reduction catalyst to overcome the problems of high preparation cost and complicated preparation method of heterostructure oxygen reduction catalyst

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Experimental program
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Effect test

Embodiment 1

[0032] a Ni(OH) 2 ZrO 2 The preparation method of heterostructure fuel cell cathode oxygen reduction catalyst is as follows:

[0033] 0.75g of ZrCl 4 and 0.2g NiCl 2 Add to 50ml of ethanol and 20ml of ethanol respectively, and stir until dissolved, then mix the two evenly and move into the reaction kettle, at a certain temperature T (T=130°C, 150°C, 170°C, 190°C, 210°C) Solvothermal reaction was carried out for 12h. Centrifuge the reaction mixture at 9000 rpm for 10-20 minutes in a centrifuge, wash the obtained product 4-6 times with water and ethanol, and then dry it at 60-80°C for a period of time. 0.1 g of the dried crude product was added to 40 ml of ethanol, and the mixture was sonicated in a sonicator for 6 h. The mixture after ultrasonic stripping was centrifuged at 9000 rpm for 10-20 minutes in a centrifuge, and the obtained product was washed 4-6 times with water and ethanol. Finally, dry for a period of time at 60-80°C.

[0034] The obtained sample is Ni(OH) ...

Embodiment 2

[0036] a Ni(OH) 2 ZrO 2 The preparation method of heterostructure fuel cell cathode oxygen reduction catalyst is as follows:

[0037] 0.75g of ZrCl 4 and 0.2g NiCl 2 Add to 50ml of ethanol and 20ml of ethanol respectively, and stir until dissolved, then mix the two evenly and move them into the reaction kettle, carry out solvothermal reaction at 150 ℃, maintain t (t=3h, 6h, 9h, 12h, 24h ). Centrifuge the reaction mixture at 9000 rpm for 10-20 minutes in a centrifuge, wash the obtained product 4-6 times with water and ethanol, and then dry it at 60-80° C. for a period of time. 0.1 g of the dried crude product was added to 40 ml of ethanol, and the mixture was sonicated in a sonicator for 6 h. The mixture after ultrasonic stripping was centrifuged at 9000 rpm for 10-20 minutes in a centrifuge, and the obtained product was washed 4-6 times with water and ethanol. Finally, dry for a period of time at 60-80 °C.

[0038] The obtained sample is Ni(OH) 2 / ZrO 2 Heterostructur...

Embodiment 3

[0040] a Ni(OH) 2 ZrO 2 The preparation method of heterostructure fuel cell cathode oxygen reduction catalyst is as follows:

[0041] 0.75g of ZrCl 4 and 0.2g NiCl 2 Add to 50ml of ethanol and 20ml of ethanol respectively, and stir until dissolved, then mix the two evenly and transfer to a reaction kettle, and carry out solvothermal reaction at 150°C for 12h. Centrifuge the reaction mixture at 9000 rpm for 10-20 minutes in a centrifuge, wash the obtained product 4-6 times with water and ethanol, and then dry it at 60-80° C. for a period of time. 0.1 g of the dried crude product was added to 40 ml of ethanol, and the mixture was sonicated in a sonicator for Ut hours (Ut = 0h, 3h, 6h, 9h, 12h). The mixture after ultrasonic stripping was centrifuged at 9000 rpm for 10-20 minutes in a centrifuge, and the obtained product was washed 4-6 times with water and ethanol. Finally, dry for a period of time at 60-80°C.

[0042] The obtained sample is Ni(OH) 2 / ZrO 2 Heterostructure...

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Abstract

The invention discloses a preparation method of a Ni(OH)2ZrO2 heterostructure catalyst for cathodic oxygen reduction of a fuel cell. The preparation method comprises the following steps: subjecting ZrCl4 and NiCl2 to reacting in an ethanol solution, washing the obtained mixture with absolute ethyl alcohol and distilled water, conducting drying to obtain a Ni(OH)2 / ZrO2 crude product, mixing the Ni(OH)2 / ZrO2 crude product with absolute ethyl alcohol according to a certain ratio, carrying out an ultrasonic reaction for a period of time, performing washing with absolute ethyl alcohol and distilled water, and conducting drying to obtain the Ni(OH)2 / ZrO2 heterostructure catalyst. The non-noble metal catalyst which is low in cost, efficient to use and wide in resource distribution is adopted as the raw material; the preparation method is simple; the structure of the catalyst is stable; and the catalyst has wide prospects in basic laboratories and industrial application of fuel cells.

Description

technical field [0001] The invention belongs to the technical field of materials, specifically a kind of Ni(OH) 2 / ZrO 2 The preparation method of heterostructure material, the prepared Ni(OH) 2 / ZrO 2 Heterostructure materials applied to fuel cell cathode oxygen reduction catalysts. Background technique [0002] With the emergence of the global energy crisis and environmental degradation, the development of scientific, efficient, green and sustainable energy has become the focus of research work around the world. Among the new energy sources that have been developed, solar energy and wind energy have attracted extensive attention from industry and scientific research circles because of their clean and renewable characteristics, but these energy supplies are restricted by diurnal and seasonal constraints and can only be intermittent or limited to regional areas. supply. In order to avoid these problems of energy supply stability, electrochemical energy storage and conve...

Claims

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Application Information

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IPC IPC(8): H01M4/90H01M4/88
CPCH01M4/9016H01M4/9025H01M4/8825Y02E60/50
Inventor 张蓉李瑞敏乔亚磊张鼎崔子祥
Owner TAIYUAN UNIV OF TECH
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