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High-performance and long-life zinc-nickel battery negative electrode paste

A zinc-nickel battery and negative electrode slurry technology, which is applied to nickel storage batteries, battery electrodes, alkaline storage batteries, etc., can solve the problems of not being able to improve the cycle performance of zinc negative electrodes, and achieve small material migration and settlement deformation, and prolong the life of the battery. Cycle life, effect of reducing gas generation

Active Publication Date: 2021-04-06
森克创能(天津)新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another type of additives are metals or their oxides or hydroxides with higher hydrogen evolution charge and discharge potential to slow down the corrosion of zinc in alkaline electrolytes, but these additives still do not improve the cycle of zinc anode very well performance

Method used

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  • High-performance and long-life zinc-nickel battery negative electrode paste
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  • High-performance and long-life zinc-nickel battery negative electrode paste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] High-performance long-life zinc-nickel battery negative electrode slurry, including the following components:

[0029] Mix 40g of zinc oxide, 45g of calcium zincate, 2.5g of graphite, 2.5g of carbon black, 2g of indium oxide, 2g of bismuth oxide, and 1.5g of vinylon, and mix evenly to obtain a mixed material;

[0030] Add 0.5g TSP-515 (acrylic acid vinyl alcohol copolymer), 0.5g CMC, and 0.5g sodium polyacrylate to 500g distilled water to obtain a bonding solvent;

[0031] Add the mixed material to the bonding solvent, and then use 3g of PTFE emulsion to prepare negative electrode slurry;

[0032] The negative electrode slurry was coated on both sides of the copper grid, pressed and dried to form a negative electrode, which was used as the experimental group A.

Embodiment 2

[0034] High-performance and long-life zinc-nickel battery negative electrode paste:

[0035] Mix 50g of zinc powder, 45g of calcium zincate, 0.5g of acetylene black, 0.5g of carbon black, 0.5g of aluminum oxide, 0.5g of lead oxide and 0.1g of PP, and mix evenly to obtain a mixed material;

[0036] Add 0.1g of PVA, 0.1g of TSP-515 (acrylic acid vinyl alcohol copolymer), 0.1g of CMC and 0.1g of sodium polyacrylate into 500g of distilled water to obtain a bonding solvent;

[0037] Add the mixed material into the bonding solvent, and then prepare the negative electrode slurry with 0.5g of PTFE emulsion and 2.0g of SBR emulsion;

[0038] The negative electrode slurry was coated on both sides of the copper grid, and pressed and dried to form a negative electrode, which was used as the experimental group B.

Embodiment 3

[0040] High-performance long-life zinc-nickel battery negative electrode slurry, including the following components:

[0041] Zinc oxide 35g, calcium zincate 35g, zinc powder 20g, conductive ceramic 3g, bismuth oxide 1.2g, aluminum oxide 1.3g, nylon 1g, PTFE emulsion 2.5g, CMC 0.3g, sodium polyacrylate 0.3g, PVA 0.4g,

[0042] The manufacturing method is the same as in Example 1, adopting 500g distilled water to prepare negative electrode slurry,

[0043] Mix 45g of zinc powder, 45g of zinc oxide, 3g of conductive ceramics, 1.2g of bismuth oxide, 1.3g of aluminum oxide and 1g of nylon fiber, and mix evenly to obtain a mixed material;

[0044] Add 0.4g of PVA, 0.3g of CMC and 0.3g of sodium polyacrylate into 500g of distilled water to obtain a bonding solvent;

[0045] Add the mixed material into the bonding solvent, and then prepare the negative electrode slurry with 2.5g of PTFE emulsion;

[0046] The negative electrode slurry was coated on both sides of the copper grid, pr...

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Abstract

High-performance and long-life zinc-nickel battery negative electrode slurry, including the following components according to weight percentage: active material 85-95%, conductive agent 1-5%, additive 1-4%, auxiliary material 0.1-1.5%, auxiliary binder 2.5% ‑3% and binder 0.4‑1.5%, active materials include one or more of zinc oxide, calcium zincate and zinc powder, additives include one or more of indium oxide, bismuth oxide, aluminum oxide and lead oxide The conductive agent includes one or more of graphite, carbon black, acetylene black and conductive ceramics, the auxiliary materials include short fibers and inorganic fibers, the short fibers include one or more of vinylon, PP, and nylon, and the adhesive includes acrylic acid Any three or four of vinyl alcohol copolymers TSP, CMC, sodium polyacrylate, and PVA, and the auxiliary binder is PTFE and SBR emulsion. The zinc-nickel battery negative electrode slurry provided by the invention has stable state, good fluidity, The excellent performance of not forming zinc dendrites, less material migration and settlement deformation, and longer life can better meet the needs of development.

Description

technical field [0001] The invention relates to the technical field of zinc-nickel batteries, in particular to a high-performance and long-life zinc-nickel battery negative electrode slurry. Background technique [0002] Zinc-nickel battery is a green battery that can replace nickel-metal hydride and lead-acid batteries. Compared with nickel-metal hydride and nickel-cadmium batteries, it has the characteristics of high voltage and strong discharge current. It is unparalleled in digital cameras, flashlights, and electric toys. The advantages. Compared with lead-acid batteries, it has the characteristics of green environmental protection, high specific power, high specific energy, and good low temperature performance. The short life of the existing zinc-nickel batteries is the main problem that restricts the development of zinc-nickel batteries for a long time. The reason for the short life of zinc-nickel batteries is that, in addition to the defects of positive and negative ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/62H01M10/30
CPCH01M4/362H01M4/621H01M4/624H01M10/30Y02E60/10
Inventor 许文武占耀冯忠厚楚力军
Owner 森克创能(天津)新能源科技有限公司
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