Direct sodium borohydride fuel cell anode and manufacturing method thereof

A technology of sodium borohydride and fuel cells, which is applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of complex manufacturing process of diaphragm, low yield, high price and cost, etc., so as to improve utilization rate, improve discharge performance, suppress The effect of hydrolysis

Inactive Publication Date: 2019-01-29
BEIJING YIYUAN NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this can increase the discharge power of the battery, most of these separators require extrem

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  • Direct sodium borohydride fuel cell anode and manufacturing method thereof
  • Direct sodium borohydride fuel cell anode and manufacturing method thereof
  • Direct sodium borohydride fuel cell anode and manufacturing method thereof

Examples

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Example Embodiment

[0031] Example one

[0032] A method for manufacturing a direct sodium borohydride fuel cell anode. The method mainly prepares a catalytic slurry by mixing and stirring a certain proportion of active components and auxiliary materials, and then coating the catalytic slurry on a collecting net.

[0033] The above-mentioned catalytic slurry required for the production of direct sodium borohydride fuel cell anode includes the active component Co 3 O 4 , AB 5 Type hydrogen storage alloy, acetylene black and binder polyvinyl alcohol (PVA); among them Co 3 O 4 The weight percentage is 5%, the weight percentage of hydrogen storage alloy is 91%, acetylene black is 3%, and PVA is 1%.

[0034] Co in the above catalyst 3 O 4 (Wuxi Hengtai) has a purity of 99.9% and a specific surface area of ​​140m 2 / g, black powder with an average particle size of 50nm.

[0035] AB above 5 The purity of the type hydrogen storage alloy is 99.9%, the grain size is 200 mesh, and the alloy composition is Ni: 50%, R...

Example Embodiment

[0043] Example two

[0044] A method for manufacturing a direct sodium borohydride fuel cell anode. The method mainly prepares a catalytic slurry by mixing and stirring a certain proportion of active components and auxiliary materials, and then coating the catalytic slurry on a collecting net.

[0045] The above-mentioned catalytic slurry required for the production of direct sodium borohydride fuel cell anode includes the active component Co 3 O 4 , AB 5 Type hydrogen storage alloy, carbon black ( XC-72) and adhesive polyvinyl alcohol (PVA); of which Co 3 O 4 The weight percentage of hydrogen storage alloy is 1%, the weight percentage of hydrogen storage alloy is 95%, carbon black ( XC-72) is 3% and PVA is 1%.

[0046] Co in the above catalyst 3 O 4 (Wuxi Hengtai) has a purity of 99.9% and a specific surface area of ​​140m 2 / g, black powder with an average particle size of 50nm.

[0047] AB above 5 The purity of the type hydrogen storage alloy is 99.9%, the grain size is 200 mesh, ...

Example Embodiment

[0055] Example three

[0056] A method for manufacturing a direct sodium borohydride fuel cell anode. The method mainly prepares a catalytic slurry by mixing and stirring a certain proportion of active components and auxiliary materials, and then coating the catalytic slurry on a collecting net.

[0057] The above-mentioned catalytic slurry required for the production of direct sodium borohydride fuel cell anode includes the active component Co 3 O 4 , AB 5 Type hydrogen storage alloy, carbon black (BLACK 2000) and binder carboxymethyl cellulose (CMC); of which Co 3 O 4 The weight percentage of the hydrogen storage alloy is 3%, the weight percentage of the hydrogen storage alloy is 93%, the carbon black (BLACK 2000) is 3%, CMC is 1%.

[0058] Co in the above catalyst 3 O 4 (Wuxi Hengtai) has a purity of 99.9% and a specific surface area of ​​140m 2 / g, black powder with an average particle size of 50nm.

[0059] AB above 5 The purity of the type hydrogen storage alloy is 99.9%, the g...

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Abstract

The invention discloses a direct sodium borohydride fuel cell anode. The discharge power of a direct sodium borohydride fuel cell can be substantially increased without using an ionic diaphragm, hydrolysis of borohydride ions can also be effectively inhibited, and therefore the utilization rate of a fuel is increased. The direct sodium borohydride fuel cell anode comprises activated components, carbon black, a bonding agent and an electric collecting conductor, and the activated components include a hydrogen storage alloy and a metallic cobalt oxide. The invention also provides a manufacturingmethod of the direct sodium borohydride fuel cell anode.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a direct sodium borohydride fuel cell anode and a method for making the direct sodium borohydride fuel cell anode. Background technique [0002] A direct sodium borohydride fuel cell (DBFC) is an electrochemical power source that uses an alkaline solution of sodium borohydride as fuel and directly participates in a chemical reaction under the action of a negative electrode catalyst. Compared with the indirect sodium borohydride fuel cell, the direct sodium borohydride fuel cell does not need to go through the intermediate step of generating hydrogen, but directly inputs the fuel into the fuel cell for power generation, so it has a more negative electrode cell, and the theoretical open circuit voltage can reach 1.64V. [0003] At present, there are two technical problems that need to be solved urgently in the application process of direct sodium borohydride fuel cells. [0004...

Claims

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Application Information

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IPC IPC(8): H01M4/90
CPCH01M4/90H01M4/9041Y02E60/50
Inventor 张树雄张云帆吴宝军洪磊
Owner BEIJING YIYUAN NEW ENERGY TECH CO LTD
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