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Anode catalytic material for direct borohydride fuel cell, anode material as well as preparation method and fuel cell

A fuel cell and borohydride technology, applied in fuel cells, nanotechnology for materials and surface science, battery electrodes, etc., can solve problems such as the complex combination of catalysts and basic electrodes, and achieve catalytic performance and discharge efficiency. Effect of reducing processing cost and improving performance

Active Publication Date: 2019-02-05
BEIFANG UNIV OF NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides an anode catalytic material for a direct borohydride fuel cell, an anode material and its preparation method, and a fuel cell to solve the complex combination of catalyst and basic electrode in the prior art, and the catalytic ability and discharge efficiency are equal Technical Problems with Paradox

Method used

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  • Anode catalytic material for direct borohydride fuel cell, anode material as well as preparation method and fuel cell
  • Anode catalytic material for direct borohydride fuel cell, anode material as well as preparation method and fuel cell
  • Anode catalytic material for direct borohydride fuel cell, anode material as well as preparation method and fuel cell

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Experimental program
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Effect test

Embodiment 1

[0071] The anode catalyst material CoSn used for the direct borohydride fuel cell of the present embodiment 0.33 , The average particle size of the particles is 22nm.

[0072] The preparation method of the direct borohydride fuel cell anode material of the present embodiment:

[0073] Cut out nickel foam with an area of ​​2cm×2cm and ultrasonically clean it with absolute ethanol and 1mol / L hydrochloric acid for 15min. Rinse with deionized water and place in 0.4 wt% AgNO 3 The solution was subjected to photosensitization treatment at room temperature for 24 hours. It was then washed with deionized water and dried under vacuum at 50 °C for 12 h.

[0074] Accurately weigh 85mg SnSO 4 , 286mg CoSO 4 ·7H 2 O, 40mg Na 2 B 4 o 7 10H 2 O, 400mg NH 4 Cl and 1.22g KNaC 4 h 4 o 6 and dissolved in 20 mL of deionized water, and adjusted the pH value of the mixture to 12 with 1 mol / L NaOH solution.

[0075] Prepare 20mL 1mol / L NaOH solution and add 1.79g NaBH 4 . NaBH 4 Af...

Embodiment 2

[0084] The anode catalyst material CoSn used for the direct borohydride fuel cell of the present embodiment 0.5 , The average particle size of the particles is 25nm.

[0085] The preparation method of the direct borohydride fuel cell anode material of the present embodiment:

[0086] Cut out nickel foam with an area of ​​2cm×2cm and ultrasonically clean it with absolute ethanol and 1mol / L hydrochloric acid for 15min. Rinse with deionized water and place in 0.4 wt% AgNO 3 The solution was subjected to photosensitization treatment at room temperature for 24 hours. It was then washed with deionized water and dried under vacuum at 50 °C for 12 h.

[0087] Accurately weigh 120mg SnSO 4 , 249mg CoSO 4 ·7H 2 O, 46 mg Na 2 B 4 o 7 10H 2 O, 410mg NH 4 Cl and 1.32g KNaC 4 h 4 o 6 and dissolved in 20 mL of deionized water, and adjusted the pH value of the mixture to 13 with 1 mol / L NaOH solution.

[0088] Prepare 20mL 1mol / L NaOH solution and add 1.79g NaBH 4 . NaBH 4 A...

Embodiment 3

[0091] The anode catalyst material CoSn used for the direct borohydride fuel cell of the present embodiment 0.9 , The average particle size of the particles is 18nm.

[0092] The preparation method of the direct borohydride fuel cell anode material of the present embodiment:

[0093] Cut out nickel foam with an area of ​​2cm×2cm and ultrasonically clean it with absolute ethanol and 1mol / L hydrochloric acid for 15min. Rinse with deionized water and place in 0.4 wt% AgNO 3 The solution was subjected to photosensitization treatment at room temperature for 24 hours. It was then washed with deionized water and dried under vacuum at 50 °C for 12 h.

[0094] Accurately weigh 186mg SnSO 4 , 191mg CoSO 4 ·7H 2 O, 44 mg Na 2 B 4 o 7 10H 2 O, 420mg NH 4 Cl and 1.32g KNaC 4 h 4 o 6 and dissolved in 20 mL of deionized water, and adjusted the pH value of the mixture to 13 with 1 mol / L NaOH solution.

[0095] Prepare 20mL 1mol / L NaOH solution and add 1.79g NaBH 4 . NaBH 4 A...

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Abstract

The invention discloses an anode catalytic material for a direct borohydride fuel cell, an anode material as well as a preparation method thereof and a fuel cell. The anode catalytic material for thedirect borohydride fuel cell directly synthesizes a two-metal catalytic material CoSnx with no carrier and no binder on foam nickel by virtue of a chemical reduction method, and x is 0 to 1. Accordingto the anode catalytic material for the direct borohydride fuel cell, the composite material of Sn and Co is firstly used as the catalytic material for the direct borohydride fuel cell, the anode material with good catalytic activity is combined with a material with high hydrogen overpotential, the obtained CoSnx is high in catalytic performance, the hydrolytic reaction of the borohydride is inhibited, the absolute hydrogen evolution rate is reduced, so that the discharging efficiency of fuel is greatly improved, and the contradiction between the catalytic capacity and the discharging efficiency can be effectively solved. The anode catalytic material for the direct borohydride fuel cell can provide theoretical foundation for optimizing and perfecting the DBFC anode catalytic material.

Description

technical field [0001] The invention relates to the field of direct borohydride fuel cells, in particular to an anode catalyst material for direct borohydride fuel cells. In addition, the present invention also relates to an anode material comprising the above-mentioned anode catalyst material for direct borohydride fuel cells, its preparation method and application. Background technique [0002] At present, due to the problems of storage and transportation of hydrogen and electrocatalysis, the popularization and application of hydrogen-oxygen fuel cells still faces great challenges. Therefore, researchers try to find hydrogen-rich compounds that can replace hydrogen and develop new types of fuel cells. The most representative ones are direct methanol fuel cells, direct ethanol fuel cells and direct borohydride fuel cells. Compared with alcohol fuel cells, direct borohydride fuel cells have higher specific capacity (5.7Ah / g) and higher theoretical electromotive force (1.64...

Claims

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Application Information

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IPC IPC(8): H01M4/90H01M8/1009B82Y30/00
CPCB82Y30/00H01M4/9041H01M4/9091H01M8/1009Y02E60/50
Inventor 马金福文瑾方豪杰
Owner BEIFANG UNIV OF NATITIES
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