Semi-solid battery positive electrode material and alkaline zinc-manganese battery prepared from same

A battery positive electrode, zinc-manganese battery technology, applied in the direction of electrode manufacturing, battery electrodes, primary battery use/maintenance, etc., can solve the problem of unsatisfactory storage performance of alkaline manganese batteries, failure to improve high-current discharge performance, and improvement of battery discharge performance limited problems, to achieve the effects of reducing the positive polarization effect, stabilizing the photoelectrochemical properties, and improving the discharge performance

Inactive Publication Date: 2020-01-31
NINGBO BEITERUI ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the storage performance of the alkaline manganese battery is still unsatisfactory, and the high-current discharge performance has not been improved.
Chinese patent applications CN102569751A and CN106784781A respectively disclose the use of titanium dioxide, titanium dioxide, imidazole, and ES fiber mixture as positive electrode additives, but they are all conventional solid-state battery positive electrodes, so the improvement of battery discharge performance is still limited.

Method used

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  • Semi-solid battery positive electrode material and alkaline zinc-manganese battery prepared from same
  • Semi-solid battery positive electrode material and alkaline zinc-manganese battery prepared from same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The semi-solid battery cathode material of Example 1 comprises the following components in parts by weight:

[0040] Electrolytic manganese dioxide (EMD): 170 parts

[0041] TiO(OH) 2 : 0.2 parts

[0042] Flake graphite: 15 parts

[0043] Zinc stearate: 0.18 parts

[0044] Electrolyte: 95 parts

[0045] The negative electrode material comprises the following components in parts by weight:

[0046] Zinc powder: 100 parts

[0047] Sodium polyacrylate / polyacrylic acid (2:1, w / w): 1.1 parts

[0048] Indium oxide: 0.04 parts

[0049] Electrolyte: 52 parts

[0050] Pure water: 4.5 parts

[0051] Wherein, the electrolytic solution is an aqueous potassium hydroxide solution with a content of 35% (w / w).

[0052] refer to figure 1 , figure 1 It is the structural representation of the alkaline zinc-manganese battery of the present embodiment 1, and its preparation method is as follows:

[0053] S1. Preparation of coated steel shell: Mix the conductive agent carbon bla...

Embodiment 2

[0058] The positive electrode material and negative electrode material formula of the semi-solid battery in Example 2 are the same as in Example 1. The difference between the preparation method of the semi-solid alkaline zinc-manganese battery and Example 1 is that the battery model is LR14. In the battery assembly step, the positive electrode The injection amount of the material is about 30g, the injection amount of the negative electrode material is about 20g, and other preparation processes are the same as in Example 1.

Embodiment 3

[0060] The only difference between Example 3 and Example 1 is that the gelling agent is sodium polyacrylate: 1.1 parts.

[0061] The preparation method of the alkaline zinc-manganese battery of embodiment 3 is the same as that of embodiment 1.

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Abstract

The invention belongs to the technical field of chemical batteries and particularly relates to a semi-solid battery positive electrode material and an alkaline zinc-manganese battery prepared from thesame. The semi-solid battery positive electrode material is a semi-solid material with a liquid-solid weight ratio of about 0.47-0.52. The positive electrode material is prepared from the following components of: 170 to 175 parts of electrolytic manganese dioxide (EMD); 13 to 15 parts of graphite; 90 to 95 parts of electrolyte; 0.18 to 0.22 part of hydrated titanium dioxide; and 0.16 to 0.20 partof zinc stearate. With the semi-solid battery positive electrode material adopted, the internal polarization phenomenon of a battery during high-current discharge can be greatly reduced; conductivityis optimized; the discharge performance of an alkaline manganese battery during large-load and medium-load discharge is improved; the discharge duration of the alkaline manganese battery during large-load and medium-load discharge is prolonged; the void ratio of a positive electrode ring and the content of electrolyte are increased; sufficient reaction can be achieved during large-current discharge; and the utilization rate of an active substance manganese dioxide is increased.

Description

technical field [0001] The invention belongs to the technical field of chemical batteries, and relates to an alkaline zinc-manganese battery, in particular to a semi-solid battery anode material and an alkaline zinc-manganese battery prepared therefrom. Background technique [0002] Zinc-manganese batteries are currently the leading product in the civilian battery market, and can be divided into neutral zinc-manganese batteries and alkaline zinc-manganese batteries. Among them, the alkaline zinc-manganese battery uses potassium hydroxide aqueous solution as the electrolyte, zinc as the negative electrode, and manganese dioxide as the positive electrode. The steel case acts as a current collector and battery container. Manganese dioxide is the main material of the positive electrode active material of alkaline manganese battery, but due to its poor conductivity, it is necessary to add a conductive agent to reduce the resistance of the positive electrode, and at the same time...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M6/06H01M4/04H01M6/50
CPCH01M4/62H01M4/622H01M6/06H01M4/04H01M2006/5094
Inventor 邬烨甬董凯商景鹏
Owner NINGBO BEITERUI ENERGY TECH
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