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A kind of 3D graphene carbon-nickel hydrogen battery and preparation method thereof

A nickel-metal hydride battery and carbon alkene technology, which is applied in the manufacture of nickel storage batteries, alkaline storage batteries, battery electrodes, etc., can solve the problem that the key performance of battery specific capacity and specific energy has not been significantly improved, and graphene has high conductivity and high The specific surface properties have not been fully utilized, and the high conductivity of graphene cannot be fully utilized, so as to achieve stable and controllable product performance, low manufacturing cost, and low cost.

Inactive Publication Date: 2022-06-28
YANCHENG TEACHERS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can prepare graphene-modified battery electrode active materials with improved performance compared with the original battery, but the high conductivity and high specific surface characteristics of graphene have not been fully utilized, so the specific capacity and specific energy of the battery are critical. No significant improvement in performance
[0006] At present, the technology of graphene in the field of chemical energy storage applications cannot meet the basic requirements of industrialization such as simple preparation methods, low cost, stable and controllable product performance, especially the excellent characteristics of graphene such as high conductivity and high specific surface area cannot be fully utilized. This greatly limits the wider industrial application of graphene in the field of chemical energy storage

Method used

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  • A kind of 3D graphene carbon-nickel hydrogen battery and preparation method thereof
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  • A kind of 3D graphene carbon-nickel hydrogen battery and preparation method thereof

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Embodiment 1

[0055] The present embodiment provides a method for preparing a 3D graphene carbon-nickel-metal hydride battery, the details are as follows:

[0056] (1) Take a piece of flexible expanded graphite paper strip of 1cm*3cm and thickness of 0.05mm, wash and dry, mix 96.85% of acetylene black, 1.55% of sodium carboxymethyl cellulose, and 1.60% of styrene-butadiene rubber, fully stir evenly, adjust into a paste-like conductive paste; spread the paste-like paste evenly on one side of the graphite paper strip, such as figure 2 As shown in the figure, a layer of carbon-containing conductive adhesive 1 is formed, and the coating thickness is 0.08 mm, and then the coated expanded graphite-carbon-containing conductive adhesive sheet is vacuum-dried at room temperature for 5 hours to obtain the expanded graphite-carbon-containing conductive adhesive. Composite flakes.

[0057] (2) The graphite surface 1cm*1cm at one end of the expanded graphite-carbon-containing conductive adhesive compo...

Embodiment 2

[0061] The present embodiment provides a method for preparing a 3D graphene carbon-nickel-metal hydride battery, the details are as follows:

[0062] (1) Take a piece of flexible expanded graphite paper strip of 1cm*3cm and thickness of 0.05mm, wash and dry, mix 96.85% of acetylene black, 1.55% of sodium carboxymethyl cellulose, and 1.60% of styrene-butadiene rubber, fully stir evenly, adjust into a paste-like conductive paste; spread the paste-like paste evenly on one side of the graphite paper strip, such as figure 2 As shown in the figure, a layer of carbon-containing conductive adhesive 1 is formed, and the coating thickness is 0.08 mm, and then the coated expanded graphite-conductive adhesive sheet is vacuum-dried at room temperature for 5 hours to obtain an expanded graphite-carbon-containing conductive adhesive composite sheet .

[0063] (2) The graphite surface of one end of the expanded graphite-carbon-containing conductive adhesive composite sheet is 1cm*1cm as the...

Embodiment 3

[0067] The present embodiment provides a method for preparing a 3D graphene carbon-nickel-metal hydride battery, the details are as follows:

[0068] (1) Take a piece of flexible expanded graphite paper strip of 1cm*3cm and thickness of 0.05mm, wash and dry, mix 96.85% of acetylene black, 1.55% of sodium carboxymethyl cellulose, and 1.60% of styrene-butadiene rubber, fully stir evenly, adjust into a paste-like conductive paste; spread the paste-like paste evenly on one side of the graphite paper strip, such as figure 2 As shown in the figure, a layer of carbon-containing conductive adhesive 1 is formed, and the coating thickness is 0.08 mm, and then the coated expanded graphite-conductive adhesive sheet is vacuum-dried at room temperature for 5 hours to obtain an expanded graphite-carbon-containing conductive adhesive composite sheet. .

[0069](2) The graphite surface of one end of the expanded graphite-carbon-containing conductive adhesive composite sheet is 1cm*1cm in the...

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Abstract

The invention relates to a 3D grapheneized carbon-nickel-hydrogen battery and a preparation method thereof. The preparation method comprises using graphite paper and carbon-containing conductive adhesive as raw materials, coating a layer of carbon-containing conductive adhesive on one side of the graphite paper, drying and curing , to form an electrode material composed of graphite paper and carbon-containing conductive adhesive layer; the other side of the graphite paper is divided into the tab area, the battery reaction area and the rest as the third area, and the third area is coated with hydrophobic glue for sealing and curing; The reaction area of ​​the battery is grapheneized to make a grapheneized carbon positive electrode; the grapheneized carbon electrode is used as the positive electrode, and the hydrogen storage alloy powder and nickel hydroxide powder are mixed and pressed on the foamed nickel sheet as the negative electrode of the battery, polypropylene The membrane is used as the diaphragm, and the potassium hydroxide solution is used as the electrolyte to assemble a 3D graphene carbon-nickel metal hydride full battery. The invention prepares a carbon-nickel-hydrogen battery with high specific energy; the source of raw materials is extensive, the cost is low, the preparation method is simple and environmentally friendly; the performance of the product is stable and controllable, and it is suitable for industrial production.

Description

technical field [0001] The invention relates to the application of graphene carbon materials to the technical field of batteries or capacitive chemical energy storage, in particular, the invention relates to a 3D graphene carbon-nickel-metal hydride battery and a preparation method thereof. Background technique [0002] Graphene is a newly recognized allotrope of carbon after fullerenes and carbon nanotubes. Graphene is a carbon atom with sp 2 Hybrid orbitals are bonded to form a single-layer two-dimensional honeycomb lattice structure carbon material with a six-membered ring structure. This unique structure of graphene brings it a series of novel and special properties, such as colorless and transparent (absorbing light intensity of only 2.3%), high electrical conductivity (the conductivity of single-layer graphene is similar to that of copper), Excellent mechanical properties (tensile strength can reach 50-200GPa, elastic modulus can reach 1TPa, the tensile strength of s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/28H01M4/587H01M10/28H01M10/30H01M4/24
CPCH01M10/30H01M10/286H01M4/28H01M4/24H01M4/587H01M2004/028Y02P70/50
Inventor 王坚金叶沈浩焦昌梅黄兵
Owner YANCHENG TEACHERS UNIV
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