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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

AI Technical Summary

Problems solved by technology

Although this can increase the discharge power of the battery, most of these separators require extremely complicated manufacturing processes and the yield is low, so the price and cost are extremely high.

Method used

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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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Embodiment 1

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

[0033] The catalytic slurry required for making the anode of the above-mentioned direct sodium borohydride fuel cell includes the active component Co 3 o 4 、AB 5 Type hydrogen storage alloy, acetylene black and binder polyvinyl alcohol (PVA); where Co 3 o 4 The weight percentage of hydrogen storage alloy 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 particle s...

Embodiment 2

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

[0045] The catalytic slurry required for making the anode of the above-mentioned direct sodium borohydride fuel cell includes the active component Co 3 o 4 、AB 5 Type hydrogen storage alloy, carbon black ( XC-72) and binder polyvinyl alcohol (PVA); where 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) was 3%, and PVA was 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...

Embodiment 3

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

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

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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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