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Preparation method of zinc-manganese battery shell with high corrosion resistance

A zinc-manganese battery and battery casing technology, which is applied in the field of preparation of zinc-manganese battery casings, can solve the problems affecting battery life and performance, easy to be oxidized, etc., and achieve the effects of prolonging battery life, cheap materials, and reducing battery polarization

Pending Publication Date: 2020-07-31
中山市华舜科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the zinc negative electrode of the zinc-manganese battery is easy to form dendrites during charging and discharging, and the battery zinc cylinder exposed to the air is easily oxidized, affecting the life and performance of the battery

Method used

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  • Preparation method of zinc-manganese battery shell with high corrosion resistance
  • Preparation method of zinc-manganese battery shell with high corrosion resistance
  • Preparation method of zinc-manganese battery shell with high corrosion resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a high corrosion-resistant zinc-manganese battery casing, such as figure 1 As shown, the battery casing includes an outer casing 2 and an inner casing 1, both of which are cylindrical cavities. In addition, the outer shell 2 covers the outside of the inner shell 1 . Wherein, the inner shell 1 described in this embodiment is made of zinc cylinder material. The outer shell 2 is a protective coating on the outside of the inner shell 1 coated with a corrosion-resistant composite material, and the protective coating protects the inner shell 1 to prevent The inner shell 1 is corroded by the electrolyte, so as to prevent the surface of the inner shell 1 from being damaged and causing electrolyte leakage. The protective coating described in the present embodiment adopts zirconium chloride ZrCl 4 , N,N-dimethylformamide (DMF), phthalic acid (PTA), polyvinylidene fluoride (PVDF) and methylpyrrolidone (NMP) materials, the protective coating can well sol...

Embodiment 2

[0033] This implementation provides a preparation method for a battery casing, which specifically includes the following steps:

[0034] S1), soak the AA-type zinc cylinder with a diameter of 15mm and a height of 50mm in acetone for 15min, rinse with distilled water for 3 times, then soak in hydrochloric acid with a concentration of 1mol / L for 1min, and then rinse with methanol to obtain the treatment after the zinc cylinder;

[0035] S2), 1.2mmol ZrCl 4 Dissolve in 120ml of N,N-dimethylformamide (DMF), stir to dissolve, add 1.2mmol of terephthalic acid (PTA), continue to stir until uniform, then move to a stainless steel reaction kettle, at a temperature of 100°C Reaction 4h.

[0036] S3), after the temperature dropped to room temperature, the obtained product was taken out, washed and filtered with ethanol for 3 times, and dried in an oven at 60°C to obtain a coating powder sample;

[0037] S4), the dried powder, polyvinylidene fluoride (PVDF) and methylpyrrolidone (NMP) ...

Embodiment 3

[0040] Based on the scheme of Example 2, only the zinc cylinder is soaked in acid, and the coating solution is not coated on the outside to obtain the treated zinc cylinder battery case, which is referred to as Zn-battery case

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Abstract

The invention provides a preparation method of a zinc-manganese battery shell with high corrosion resistance. The battery shell comprises an outer-layer shell and an inner-layer shell, and the outer-layer shell and the inner-layer shell are both cylindrical cavities. The inner-layer shell is made of a zinc cylinder material, the outer-layer shell is a protective plating layer coating the outer side of the inner-layer shell, and the method comprises the following steps: treating a zinc cylinder of the inner-layer shell, and then preparing a plating solution by utilizing ZrCl4, N, N-dimethylformamide DMF, terephthalic acid PTA, polyvinylidene fluoride (PVDF) and methyl pyrrolidone (NMP); and finally, soaking the treated zinc cylinder in a plating solution, taking out, and drying to obtain the battery shell. The inner-layer shell is protected through the protective coating, the inner-layer shell is prevented from being corroded by electrolyte, and therefore the situation that the surfaceof the inner-layer shell is damaged, and consequently the electrolyte leaks is avoided. The invention has the advantages of simple structure and simple production, and the protective coating not onlyhas corrosion resistance, but also can effectively reduce the polarization of the battery, thereby prolonging the service life of the battery.

Description

technical field [0001] The invention relates to the technical field of battery materials, in particular to a method for preparing a zinc-manganese battery casing with high corrosion resistance. Background technique [0002] my country is a big battery producer, with an annual output of nearly 30 billion batteries, of which more than 90% are dominated by zinc-manganese dry batteries. Among them, ordinary carbon zinc-manganese batteries are the main varieties of battery production. [0003] According to the current battery structure, the metal zinc is pressed into the zinc cylinder, which is not only the active material of the battery reaction, but also the outer protective shell of the battery. However, since the zinc negative electrode of the zinc-manganese battery is easy to form dendrites during charging and discharging, and because the battery zinc cylinder exposed to the air is easily oxidized, the life and performance of the battery are affected. Therefore, it is of gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M6/06C09D5/08B05D3/10B05D7/14B05D7/24H01M50/124
CPCH01M6/06C09D5/08B05D3/102B05D7/14B05D7/24B05D2506/10B05D2202/30H01M50/124H01M50/1245
Inventor 郑惠民卢锡洪安昫周丽君
Owner 中山市华舜科技有限责任公司