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Alkaline zinc-manganese battery

A zinc-manganese battery, alkaline technology, used in primary batteries, primary battery parts, battery electrodes, etc., can solve problems such as battery performance degradation, battery conductivity deterioration, and zinc paste density reduction.

Active Publication Date: 2019-05-21
FUJIAN NANPING NANFU BATTERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For solution (1), the amount of DK can be increased, but this will rapidly reduce the density of the zinc paste, the zinc active material in the negative electrode of the battery will decrease rapidly, and the low-power discharge performance of the battery will decrease; at the same time, DK is an organic matter, and the increase of DK is In the late stage of battery discharge, the conductivity of the battery will deteriorate, the internal resistance of the battery will increase, the internal consumption of the battery will increase, and the performance of the battery will decrease.
Do not increase the amount of DK, reduce the concentration of the electrolyte in the negative electrode of the battery, which can also increase the amount of water in the negative electrode of the battery, and at the same time reduce the low-power discharge performance of the battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0056] Battery discharge method:

[0057] (1) DSC discharge simulation. The specific discharge method is as follows: the first pulse is discharged at 1500mW for 2 seconds, and then the second pulse is discharged at 650mW for 28 seconds. The pulse was repeated 10 times followed by 55 minutes of rest. This pulse and off time is then repeated until a preset cutoff voltage, which is 1.05 volts. Record the number of pulses when discharging to the cut-off voltage.

[0058] (2) Simulate motor discharge. The specific discharge method is as follows: use a 3.9 ohm load to continuously discharge the battery to the cut-off voltage, the cut-off voltage of the battery discharge is 0.8 volts, and record the discharge time of the battery.

[0059] The test of the battery is to discharge the battery after it is placed at room temperature for 1 week. The battery discharge temperature is controlled at 20±1°C.

[0060] Preparation of battery:

[0061] Mix electrolytic manganese dioxide (Xi...

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Abstract

The invention relates to an alkaline zinc-manganese battery. The alkaline zinc-manganese battery comprises a cathode, an anode, an isolation piece and a shell, wherein the battery cathode also contains an additive, the content of the additive in the cathode accounts for 1%-10% of the weight of the cathode; and the concentration of a cathode electrolyte in the battery ranges from 26% to 40%, the concentration of an anode electrolyte ranges from 35% to 40%, and the concentration of a battery electrolyte ranges from 26% to 40%. According to the alkaline zinc-manganese battery, through reasonablecooperation of the concentration of the additive and the concentration of the cathode electrolyte in the alkaline zinc-manganese battery, the discharge performance of the battery at medium and low power can be substantially improved, and meanwhile the high-power discharge performance of the battery also can be substantially improved.

Description

technical field [0001] The invention relates to an alkaline zinc-manganese battery, in particular to an alkaline zinc-manganese battery with improved discharge performance under high-power conditions. Background technique [0002] Alkaline zinc-manganese batteries are usually represented by LR, and their models mainly include LR03, LR6, LR14, LR20, LR8D425, etc. In general, alkaline zinc-manganese batteries use zinc as the negative electrode, manganese dioxide as the positive electrode, and potassium hydroxide solution as the electrolyte. [0003] The reactions that occur at the negative electrode of alkaline zinc-manganese batteries have not been clearly understood. Some people think that when the battery is discharged, the negative electrode of the battery proceeds according to reaction (1): [0004] Zn+2OH - →Zn(OH) 2 (1) [0005] Some people think that when the battery is discharged, the negative electrode of the battery proceeds according to reaction (2): [0006...

Claims

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Application Information

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IPC IPC(8): H01M6/00H01M6/02H01M4/62
Inventor 常海涛林建兴陈娟沈娟钟晓桥
Owner FUJIAN NANPING NANFU BATTERY
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