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Preparation method of anode material of lead acid battery

A positive electrode material, lead-acid battery technology, applied in lead-acid batteries, battery electrodes, circuits, etc., can solve the problems of loss of connection of active material pore size, damage to the overall structure of the electrode plate, and sloughing of active materials, to overcome softening problems, The effect of suppressing lead crystal short circuit and enhancing conductivity

Inactive Publication Date: 2018-11-13
SUZHOU SICHUANGYUANBO ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under normal temperature conditions, with the cycle of charging and discharging, the positive electrode active material PbO2 particles will gradually become smaller and be reduced to PbSO4, the connection between the particles will gradually lose, and the pore size of the active material will become larger. The overall structure of the board is damaged and can no longer be used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] According to the weight ratio of graphene: phosphoric acid: acrylic fiber: magnesium sulfate is 8:5:6:3, mix evenly, and ball mill to obtain the positive electrode material additive; wherein the thickness of the acrylic fiber is 3 denier.

[0028] The positive electrode material consists of the following raw materials in parts by weight:

[0029] Dilute sulfuric acid 7.2

[0030] Additives for the above cathode materials 6.8

[0031] Deionized water 10

[0032] EDTA-2Na 0.5

[0033] Calcium phosphate 0.9

[0034] red pill 5

[0035] lead powder 72.

[0036] Add the red lead, EDTA-2Na, calcium phosphate and the above-mentioned positive electrode material additives in the positive electrode material into the automatic paste machine respectively, and stir while putting the lead powder. Add deionized water while stirring, continue to stir for 10 minutes after adding deionized water, then add dilute sulfuric acid, finish adding in 10 minutes, stir while adding, and set...

Embodiment 2

[0038] According to the weight ratio of graphene: phosphoric acid: acrylic fiber: magnesium sulfate is 8:5:6:3, mix evenly, and ball mill to obtain the positive electrode material additive; wherein the thickness of the acrylic fiber is 10 denier.

[0039] The positive electrode material consists of the following raw materials in parts by weight:

[0040] Dilute sulfuric acid 8.4

[0041] Additives for the above positive electrode materials 7.5

[0042] Deionized water 11.5

[0043] EDTA-2Na 1.5

[0044] Calcium phosphate 1.2

[0045] Red lead 6.5

[0046] lead powder 82.

[0047] Add the red lead, EDTA-2Na, calcium phosphate and the above-mentioned positive electrode material additives in the positive electrode material into the automatic paste machine respectively, and stir while putting the lead powder. Add deionized water while stirring, continue to stir for 10 minutes after adding deionized water, then add dilute sulfuric acid, finish adding in 15 minutes, stir while...

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Abstract

The invention discloses a preparation method of an anode material of a lead acid battery. The preparation method has the advantages that calcium phosphate and EDTA-2Na (ethylenediamine tetraacetic acid disodium salt) are simultaneously added, and are uniformly mixed into an active matter lead paste, and any influence to the battery formation effect is avoided; in the use process of the battery, the capacity of the battery is increased, and the separation speed of lead sulfate is accelerated; by utilizing the special structure of graphene oxide, the caking and shrinkage of the active matter canbe prevented, the lead sulfate cannot form the regular and dense large crystal, the short-circuiting of lead crystals is inhibited, and the irregular small-size lead sulfate is easy to restore into the active matter in the charging process, so that the problem of softening of the pole plate in the later process of the batteyr is effectively solved, and the service life of the battery is prolonged; by adopting an additive with special component, the component of the additive comprises a carbon material, the carbon material belongs to the high-surface activity matter, the adsorption property ishigher, an electrolyte can be well adsorbed, the contact and permeation of the sulfuric acid electrolyte to the active matter of the pole plate are improved, and the utilization rate of the active matter is relatively improved.

Description

technical field [0001] The invention relates to the field of battery materials, in particular to a method for preparing a positive electrode material of a lead-acid battery. Background technique [0002] Lead-acid batteries have a history of more than 100 years since they were invented. Lead-acid batteries have the advantages of simple structure, reliable performance, convenient use, easy access to raw materials and low price. They are widely used in many fields of national economy such as transportation, communication and national defense, and have become indispensable in social production and human life. energy products. [0003] At present, energy storage batteries are the core components used in new energy fields such as solar energy and wind energy. The performance and quality of batteries are directly related to the normal operation of energy storage systems, while the performance and quality of batteries are mainly affected by the formulation of lead paste. The exis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/57H01M4/58H01M4/60H01M4/62H01M10/06
CPCH01M4/364H01M4/57H01M4/5825H01M4/60H01M4/625H01M4/628H01M10/06Y02E60/10
Inventor 不公告发明人
Owner SUZHOU SICHUANGYUANBO ELECTRONICS TECH CO LTD
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