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Anode catalyst for direct borohydride fuel cell, anode material and preparation method thereof, and fuel cell

A fuel cell and borohydride technology, applied in fuel cells, nanotechnology for materials and surface science, molten electrolyte fuel cells, etc., can solve the problems of catalyst catalytic efficiency and low fuel utilization efficiency, and achieve suitable large-scale Preparation, easy repeatability, and the effect of battery specific capacity promotion

Active Publication Date: 2020-12-18
BEIFANG UNIV OF NATITIES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides an anode catalyst for direct borohydride fuel cells, an anode material and a preparation method thereof, and a fuel cell to solve the problem of low catalytic efficiency and fuel utilization efficiency of existing catalysts, and the interaction between catalytic activity and fuel rate contradictory technical issues

Method used

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  • Anode catalyst for direct borohydride fuel cell, anode material and preparation method thereof, and fuel cell
  • Anode catalyst for direct borohydride fuel cell, anode material and preparation method thereof, and fuel cell
  • Anode catalyst for direct borohydride fuel cell, anode material and preparation method thereof, and fuel cell

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preparation example Construction

[0036] According to another aspect of the present invention, there is also provided a method for preparing an anode catalyst for direct borohydride fuel cells as described above, comprising the following steps: mixing boric acid, ammonium salt, potassium sodium tartrate, tricobalt tetroxide and stannous sulfate , add water and stir to obtain A solution; mix an alkali solution with a pH value of 12 to 13 and sodium borohydride to obtain a B solution; mix A and B solutions, and place them in a water bath until the reaction ends when no bubbles are generated. The solid powder was obtained by filtration, and the solid powder was washed and dried to obtain an anode catalyst for direct borohydride fuel cells. The preparation method of the direct borohydride fuel cell anode catalyst of the present invention adopts a simple chemical reduction method to obtain the direct borohydride fuel cell anode catalyst, the process is simple, low in cost, easy to repeat, suitable for large-scale pr...

Embodiment 1

[0049] The anode catalyst for the direct borohydride fuel cell of the present embodiment: Co 3 o 4 / SnO 2 , spherical Co 3 o 4 Attached to lamellar SnO 2 On the surface, lamellar SnO 2 Intertwined to form a 3D structure; Co 3 o 4 The particle size is between 30nm and 40nm, SnO 2 The sheet thickness is 10nm.

[0050] The preparation method of the anode catalyst for the above-mentioned direct borohydride fuel cell is:

[0051] Weigh 40mg of borax, 400mg of ammonium chloride, 1.22mg of potassium sodium tartrate, 2.1mg of tricobalt tetroxide, 1.6mg of stannous sulfate and mix them evenly into a beaker, then measure 20mL of distilled water and add to stir to form A solution;

[0052] Weigh 1.66mg of sodium hydroxide, add 40mL of distilled water and stir, adjust the pH value to 12-13 with dilute hydrochloric acid, measure 20mL of sodium hydroxide solution, add 1.79mg of sodium borohydride and stir to form B solution;

[0053] Mix and stir solution A and solution B, put the...

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Abstract

The invention discloses an anode catalyst for a direct borohydride fuel cell, an anode material, a preparation method of the anode material and the fuel cell. The anode catalyst for the direct borohydride fuel cell adopts Co3O4 / SnO2. Co3O4 / SnO2 is attached to the surface of lamellar SnO2 through granular Co3O4, and the lamellar SnO2 is interwoven to form a 3D structure. According to the invention,the granular Co3O4 is attached to the surface of lamellar SnO2 and the lamellar SnO2 is interwoven, so a good supporting effect is achieved for the Co3O4 and the 3D structure similar to a pistil structure is formed; and through the Co3O4 / SnO2 structure, electron transmission is facilitated and more reaction space is provided for the electrolyte, thereby facilitating improvement of catalytic performance.

Description

technical field [0001] The invention relates to the field of direct borohydride fuel cells, in particular to an anode catalyst for direct borohydride fuel cells. In addition, the present invention also relates to an anode material comprising the above-mentioned anode catalyst for direct borohydride fuel cells, a preparation method thereof, and a fuel cell. Background technique [0002] Direct Borohydride Fuel Cell (DBFC) is a power generation device that uses liquid alkali metal borohydride as fuel. Since the alkali metal borohydride is a hydrogen-containing and stable hydrogen-containing negative ion substance, the borohydride has stable chemical properties, is easy to store and supply, is safe to use and is not flammable, and is an ideal fuel cell. The key to the development of direct borohydride fuel cells is the anode electrocatalyst. Regarding the research on anode catalysts for direct borohydride fuel cells, there are mainly Pt-based materials, Au-based materials, Pd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M4/88H01M4/86H01M8/14H01M8/22B82Y30/00
CPCB82Y30/00H01M4/86H01M4/8825H01M4/8828H01M4/9016H01M4/9075H01M8/143H01M8/22H01M2004/8684Y02E60/50
Inventor 马金福卢辉盛之林
Owner BEIFANG UNIV OF NATITIES
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