Negative pole additive of low-gas-evolution alkaline zinc-manganese battery and preparation method thereof

A zinc-manganese battery and gas evolution technology, which is applied to battery electrodes, circuits, electrical components, etc., can solve problems such as high price and large cost burden, and achieve the effects of reducing production costs, improving competitiveness, and improving storage performance.

Inactive Publication Date: 2013-02-20
浙江特源电池有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, metals such as indium and bismuth are expensive, causing a great cost burden

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Weigh 62kg of zinc powder, 24kg of deionized water, 12kg of potassium hydroxide, 1.5kg of zinc oxide, 0.45kg of binder, and 0.05kg of silicate, first put the zinc powder, binder, and silicate into the mixer, and stir Evenly, make a dry powder, then make a solution with potassium hydroxide, zinc oxide, and deionized water, then put the dry powder and aqueous solution into the zinc paste machine, stir evenly, vacuumize, remove air bubbles, and put it in a barrel for later use.

[0016] Example 1 The discharge performance experiments of the prepared low gassing alkaline zinc-manganese battery negative electrode and the alkaline zinc-manganese battery negative electrode obtained by the existing formula technology are shown in Table 1.

[0017] Table 1 Experimental comparison of discharge performance between Example 1 and common formula

[0018] 10Ω continuous play to 0.9V 3.9Ω continuous play to 0.9V 1.8Ω Pulse to 0.9V 1000mA pulse to 0.9V 3.9Ω continuou...

Embodiment 2

[0022] Weigh 67kg of zinc powder, 23.11kg of deionized water, 8kg of potassium hydroxide, 1.35kg of zinc oxide, 0.5kg of binder, and 0.04kg of silicate. First, put the zinc powder, binder and silicate into the mixer, Stir evenly to make a dry powder, then make a solution with potassium hydroxide, zinc oxide, and deionized water, then put the dry powder and aqueous solution into the zinc paste machine, stir evenly, vacuumize, remove air bubbles, and pack it into a barrel for later use.

[0023] Example 2 The discharge performance experiments of the prepared low gas evolution alkaline zinc-manganese battery negative electrode and the alkaline zinc-manganese battery negative electrode obtained by the existing formula technology are shown in Table 2.

[0024] Table 2 Experimental comparison of discharge performance between Example 2 and common formulation process

[0025] 10Ω continuous play to 0.9V 3.9Ω continuous play to 0.9V 1.8Ω Pulse to 0.9V 1000mA pulse to ...

Embodiment 3

[0029] Weigh 70kg of zinc powder, 18.37kg of deionized water, 10kg of potassium hydroxide, 1.2kg of zinc oxide, 0.4kg of binder, and 0.03kg of silicate. First, put the zinc powder, binder and silicate into the mixer, Stir evenly to make a dry powder, then make a solution with potassium hydroxide, zinc oxide, and deionized water, then put the dry powder and aqueous solution into the zinc paste machine, stir evenly, vacuumize, remove air bubbles, and pack it into a barrel for later use.

[0030] Table 3 shows the discharge performance experiments of the negative electrode of the alkaline zinc-manganese battery with low gas evolution rate prepared in Example 3 and the negative electrode of the alkaline zinc-manganese battery obtained by the existing formulation process.

[0031] Table 3 Experimental comparison of discharge performance between Example 3 and common formulation process

[0032] 10Ω continuous play to 0.9V 3.9Ω continuous play to 0.9V 1.8Ω Pulse to 0....

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Abstract

The invention provides a negative pole additive of a low-gas-evolution alkaline zinc-manganese battery and a preparation method thereof. The negative pole additive is prepared from the following raw materials in percentage by weight: 56-74% of zinc powder, 15-30% of deionized water, 5-20% of potassium hydroxide, 1-2% of zinc oxide, 0.1-1% of bonding agent and 0.01-0.1% of silicate. According to the negative pole additive of a low-gas-evolution alkaline zinc-manganese battery and the preparation method thereof, the silicate is used instead of indium oxide as a negative pole corrosion inhibitor in the active component composition of the negative pole; and the negative pole corrosion inhibitor can effectively reduce the gas evolution of the battery and obviously improve the storage performance of the battery, and can greatly lower the production cost of the battery, thereby being beneficial to improving the market competitiveness.

Description

technical field [0001] The invention belongs to the field of fine chemical materials, in particular to an alkaline zinc-manganese battery negative electrode additive with low gas evolution and a preparation method thereof. Background technique [0002] In alkaline zinc-manganese batteries, due to the thermodynamic instability of the zinc negative electrode itself, the dissolution of zinc in the lye and the simultaneous occurrence of hydrogen gas are prone to occur, resulting in a gradual increase in the air pressure inside the battery, resulting in a decrease in battery storage performance and battery leakage. The traditional solution is mainly to add mercury to zinc powder to form an amalgam alloy, but due to the inherent toxicity of mercury, this method has been discontinued at present. Adding indium, bismuth and other metals or metal oxides with high hydrogen evolution overpotential in the process of zinc powder smelting and zinc paste preparation is the most widely used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62
CPCY02E60/12Y02E60/10
Inventor 郑昔宝吴金星马畅
Owner 浙江特源电池有限公司
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