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Additive of lead-zinc accumulator positive material and modified alkaline accumulator positive material

A positive electrode material and battery technology, applied in the direction of alkaline battery electrodes, etc., can solve the problems of low initial cycle capacity and short life

Inactive Publication Date: 2009-02-04
赵恒祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of low initial cycle capacity and short service life of current alkaline lead-zinc batteries, the first purpose of the present invention is to provide a positive electrode additive for alkaline lead-zinc batteries, which can change the structure of activated substances and reduce activation Difficulty in material conversion, increase cycle capacity and prolong service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A battery positive electrode material additive, composed of composition A and composition B in a ratio of 1:3 by weight, wherein,

[0014] Composition A contains Pb 3 o 4 , its weight content is 75%, the balance is β-PbO 2 ;

[0015] Composition B contains β-PbO 2 , which is 85% by weight and the balance is PbSO 4 .

[0016] Composition B can use the lead powder of the positive plate over 200 mesh extracted from the scrap battery, so that the positive plate of the scrap battery can be recycled and the cost can be reduced.

Embodiment 2

[0018] A battery positive electrode material additive, composed of composition A and composition B in a ratio of 1:2.9 by weight, wherein,

[0019] Composition A contains Pb 3 o 4 , its weight content is 85%, the balance is β-PbO 2 ;

[0020] Composition B contains β-PbO 2 , which is 80% by weight and the balance is PbSO 4 .

[0021] Composition B can use the lead powder of the positive plate over 200 mesh extracted from the scrap battery, so that the positive plate of the scrap battery can be recycled and the cost can be reduced.

Embodiment 3

[0023] A battery positive electrode material additive, composed of composition A and composition B in a ratio of 1:2.8 by weight, wherein,

[0024] Composition A contains Pb 3 o 4 , its weight content is 95%, and the balance is β-PbO 2 ;

[0025] Composition B contains β-PbO 2 , which is 95% by weight and the balance is PbSO 4 .

[0026] Composition B can use the lead powder of the positive plate over 200 mesh extracted from the scrap battery, so that the positive plate of the scrap battery can be recycled and the cost can be reduced.

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PUM

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Abstract

The disclosed additive for positive pole of accumulator is composed of composition A and composition B according to weight ratio 1:2.8-3. Composition A contains Pb3O4 equal to or larger than 75%, and surplus is beta - PbO2. Composition B contains beta - PbO2 equal to or larger than 80%, and surplus is PbSO4. The invention also discloses a modified anode material of accumulator of using the said additive. The additive and anode material of accumulator can raise capacity of first time and cycle life of accumulator.

Description

technical field [0001] The invention relates to a storage battery positive electrode material. Background technique [0002] Lead Dioxide PbO 2 It is the positive electrode material of the positive plate of the alkaline lead-zinc battery. At present, the content of lead dioxide in the positive plate is up to 85%. In fact, it can only be controlled at about 80% in general production. This just means that 20% of the active matter-lead has not been converted, resulting in low initial cycle capacity and short life of the storage battery. [0003] If the conversion rate of lead dioxide is simply increased in the production process of the plate, first, a large proportion of electric energy needs to be wasted, which is not economically cost-effective; moreover, the strength of the active material of the positive plate will be greatly affected, making the The strength of the pole plate is reduced, and it is easy to cause the plate to be powdered and short-circuited during the use ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/24
CPCY02E60/124Y02E60/10
Inventor 赵恒祥
Owner 赵恒祥
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