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A kind of zinc-nickel battery negative electrode material and preparation method thereof

A negative electrode material, zinc-nickel battery technology, applied to nickel storage batteries, battery electrodes, negative electrodes, etc., can solve problems such as poor cycle performance of zinc-nickel batteries, improve cycle performance, slow down the formation of dendrites, and improve production efficiency Effect

Active Publication Date: 2021-10-29
朱秀兵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the defect of poor cycle performance of the existing zinc-nickel battery, on the one hand, a zinc-nickel battery negative electrode material with better cycle performance is provided, and one embodiment thereof is as follows:

Method used

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  • A kind of zinc-nickel battery negative electrode material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Take 75.5g of zinc oxide, 14.7g of zinc powder, 4.95g of inorganic corrosion inhibitor and 0.7g of α-alumina whiskers and mix them uniformly to obtain a mixture.

[0017] Weigh 0.06 g of sodium dodecylbenzene sulfonate, dissolve it in 10 mL of deionized water, add the resulting solution to the prepared mixture, and then use polytetrafluoroethylene emulsion (containing 3.06 g of polytetrafluoroethylene), polyethylene Alcohol solution (PVA1799, containing 1g of PVA) and potassium polyacrylate solution (containing 0.03g of potassium polyacrylate) were prepared into negative electrode slurry.

[0018] The negative electrode slurry is coated on both sides of the copper mesh, and then dried to form a negative electrode (that is, including the negative electrode material and the copper mesh referred to in the present invention). The negative electrode slurry can also be made into a sheet, then attached to both sides of the copper grid, pressed into a sheet and dried to make th...

Embodiment 2

[0020] The technical solution of Example 1 is adopted, the difference is that the amount of α-alumina whiskers is 1 g, and the amount of inorganic corrosion inhibitor is 4.65 g.

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Abstract

The invention discloses a zinc-nickel battery negative electrode material and a preparation method thereof. The negative electrode material comprises the following components in proportions: 65-85 parts by weight of zinc oxide, 10-20 parts by weight of other zinc-containing substances, inorganic corrosion inhibitor 3-6 parts by weight, 3-6 parts by weight of binder, 0.5-1 part by weight of α-alumina whisker, and 0.05-0.1 part by weight of sodium dodecylbenzenesulfonate. In this scheme, α-alumina whiskers and sodium dodecylbenzenesulfonate can work together with inorganic corrosion inhibitors to improve the cycle performance of the zinc negative electrode to a large extent, which is of great significance for expanding the industrial application of zinc-nickel batteries. important meaning.

Description

technical field [0001] The invention belongs to the technical field of zinc-nickel batteries, and in particular relates to a zinc-nickel battery negative electrode material and a preparation method thereof. Background technique [0002] Zinc-nickel battery is an alkaline battery with high specific energy (50-80Wh / kg), high specific power (500W / kg), high working voltage (1.2-1.5V), and high open-circuit voltage (about 1.75V). The anode material zinc has abundant reserves in nature and is cheap, so it has a good application prospect. However, the zinc negative electrode active material and its discharge products are easily soluble in alkaline electrolyte, and the zinc electrode will cause deformation, dendrite, passivation, self-corrosion and other hazards during the charging and discharging process, resulting in a decrease in the battery cycle life and seriously affecting the zinc-nickel electrode. Industrialization of batteries. [0003] To solve this problem, additives su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/48H01M4/62H01M10/30
CPCH01M4/362H01M4/48H01M4/628H01M10/30H01M2004/027Y02E60/10
Inventor 宋永江
Owner 朱秀兵
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