Alkaline manganese battery negative electrode zinc paste additive and application thereof

An alkaline-manganese battery and additive technology, which is applied to battery electrodes, dry batteries, circuits, etc., can solve the problems of acceleration of zinc polarization at the negative electrode of discharge current density, and achieve the effects of increased current density, long service life, and strong power

Inactive Publication Date: 2016-11-23
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The negative electrode zinc paste additive of the present invention is one or more of neodymium, neodymium trioxide, and neodymium hydroxide. Adding it to the negative electrode zinc paste can effectively reduce the polarization of zinc when the battery is discharged, and improve the efficiency of the battery reaction. The current density improves the high-voltage discharge time of battery discharge, effectively solving the problems of low battery discharge current density, accelerated negative electrode zinc polarization during discharge, and low high-voltage section of constant resistance discharge, making the battery suitable for high-current or high-power electrical appliances Longer service life and stronger power

Method used

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  • Alkaline manganese battery negative electrode zinc paste additive and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Fully mix the active material manganese dioxide, conductive graphite, and HA1681 according to the weight ratio of 160:11.5:0.8, then add an alkaline electrolyte (KOH solution) with a mass of 3% of the solid material, stir evenly, and use 120kgf / cm 2 The pressure is pressed into tablets, and then granulated and sieved to form positive electrode particles with a certain particle size distribution, and then the positive electrode ring is made by compression molding.

[0019] (2) Mix zinc powder, polyacrylic acid sodium and indium compound (indium oxide and / or indium hydroxide) in a ratio of 80:1:0.05, and then add them to the alkaline electrolyte (in which the concentration of KOH is 32%, the oxidation The zinc content is 1%) for vacuum-pumping and stirring, and finally adding a negative electrode zinc paste additive (neodymium hydroxide) of 0.01% by mass of zinc powder, and stirring evenly to obtain the negative electrode zinc paste.

[0020] (3) Assemble the positive...

Embodiment 2

[0028] Compared with Example 1, this example differs in that the formula of negative electrode zinc paste is different: the mass ratio of zinc powder, sodium polyacrylate and indium compound (indium oxide) is 120:1:0.05; the concentration of KOH in the alkaline electrolyte is 42%, and the zinc oxide content is 5%; the addition amount of the negative electrode zinc paste additive (neodymium trioxide) is 2% of the zinc powder mass, and the rest are identical.

Embodiment 3

[0030] Compared with Example 1, this example differs in that the formula of negative electrode zinc paste is different: the mass ratio of zinc powder, sodium polyacrylate and indium compound (indium oxide and / or indium hydroxide) is 100:1:0.05; The concentration of KOH in the electrolyte is 40%, the content of zinc oxide is 3%; the addition amount of the negative electrode zinc paste additive (made by mixing neodymium trioxide and neodymium hydroxide at a mass ratio of 1:2) is 0.1% of the mass of zinc powder, The rest is exactly the same.

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Abstract

The invention discloses an alkaline manganese battery negative electrode zinc paste additive. The negative electrode zinc paste additive is neodymium oxide and/or neodymium hydroxide. The negative electrode zinc paste additive is selected from one or more of neodymium, the neodymium oxide and the neodymium hydroxide, and is added into negative electrode zinc paste, so that polarization of zinc can be lowered effectively when a battery discharges; the current density of a battery reaction is increased; high-voltage discharging time is prolonged when the battery discharges; the problems of low battery discharge current density, accelerated polarization of negative electrode zinc during discharging, low constant-resistance discharge high-voltage segment and the like are solved effectively; the service life of the battery in a large-current or high-power appliance is prolonged; and higher power is achieved.

Description

technical field [0001] The invention relates to the technical field of alkaline manganese batteries, in particular to an alkaline manganese battery negative electrode zinc paste additive and its application. Background technique [0002] Alkaline manganese batteries are mainly used in small electronic products such as electric toys, flashlights, remote controls, medical equipment, and digital appliances. As a daily portable tool or entertainment product, the high performance, high quality, low cost, and ease of operation of batteries in small electronic products are key scientific and technological research and development topics for various manufacturers. As the active electrode of the alkaline-manganese battery, the negative electrode zinc paste is a key component. Its ratio is highly complex, there are many factors affecting performance, and the quality stability is difficult to control, which has a great impact on industrial development. [0003] When the current alkali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M6/06
CPCH01M4/62H01M6/06
Inventor 刘军平张婷婷包啸吴杭军
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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