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Nickel anode accumulator anode slurry and method for preparing anode and accumulator using the same

A technology of positive electrode slurry and nickel positive electrode, which is applied in the field of positive electrode slurry for nickel positive battery to prepare nickel positive electrode and nickel positive battery, which can solve the problems of poor consistency of nickel positive battery battery performance, etc., and achieve good electrochemical performance and good dispersion , enhance the effect of fluidity and uniformity

Inactive Publication Date: 2009-01-14
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcoming of the poor consistency of the battery performance of the nickel positive storage battery obtained by the nickel positive electrode prepared by the positive electrode slurry of the nickel positive storage battery, and provide a kind of positive electrode slurry and the nickel positive storage battery that make the battery have good consistency. Method for preparing nickel positive electrode and battery using the slurry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This example illustrates the preparation of a nickel cadmium alkaline storage battery.

[0031] (1) Preparation of nickel positive electrode

[0032] 80 parts by weight of positive electrode active material nickel hydroxide, 6 parts by weight of cobaltous oxide, 2 parts by weight of cadmium powder, 8 parts by weight of 3.6 parts by weight of hydroxypropyl methylcellulose (HPMC) aqueous solution and 12 parts by weight of conductive agent Graphite and 20 parts by weight of water are uniformly mixed to obtain the first mixture; 0.004 parts by weight of polyethylene oxide powder (number average molecular weight 1-2 million, Shanghai Yousheng Chemical Technology Co., Ltd.) is mixed with water to obtain 4 parts by weight of a concentration of 0.1% by weight Then, the first mixture, 4 parts by weight of polyethylene oxide aqueous solution and 3 parts by weight of polytetrafluoroethylene (PTFE) emulsion (solid content: 60% by weight) were mixed and stirred uniformly to obtain n...

Embodiment 2

[0040] This example illustrates the preparation of a nickel cadmium alkaline storage battery.

[0041] The nickel-cadmium alkaline storage battery is prepared according to the method of Example 1. The difference is that the preparation method of the nickel positive electrode slurry is to mix 80 parts by weight of positive electrode active material nickel hydroxide, 6 parts by weight of cobaltous oxide, and 2 parts by weight of cadmium powder , 8 parts by weight of concentration are 3.6 parts by weight of hydroxypropyl methylcellulose (HPMC) aqueous solution and 12 parts by weight of conductive agent graphite and 20 parts by weight of water to mix uniformly to obtain the first mixture; 0.004 parts by weight of ethylene glycol is mixed with water Obtaining 4 parts by weight of a concentration of ethylene glycol in water of 0.1% by weight, then mixing and stirring the first mixture, 4 parts of ethylene glycol in water by weight and 3 parts by weight of polytetrafluoroethylene (PTF...

Embodiment 3

[0044] This example illustrates the preparation of a nickel cadmium alkaline storage battery.

[0045] The nickel-cadmium alkaline storage battery is prepared according to the method of Example 1. The difference is that the preparation method of the nickel positive electrode slurry is to mix 80 parts by weight of positive electrode active material nickel hydroxide, 6 parts by weight of cobaltous oxide, and 2 parts by weight of cadmium powder , 8 parts by weight of concentration are 3.6 parts by weight of hydroxypropyl methylcellulose (HPMC) aqueous solution and 12 parts by weight of conductive agent graphite and 20 parts by weight of water to mix uniformly to obtain the first mixture; 0.003 parts by weight of polyethylene oxide powder (number Average molecular weight 100-200 million, Shanghai Yousheng Chemical Technology Co., Ltd.) mixed with water to obtain 3 parts by weight of polyethylene oxide aqueous solution with a concentration of 0.1% by weight and 0.001 parts by weight...

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Abstract

The invention provides an anode slurry used for a nickel anode accumulator. The anode slurry comprises an anode material and a solvent; the anode material comprises NiOH, CoO, a adhesive and a conductive agent; wherein, the anode slurry also comprises an additive which is poly-oxyalkylene and / or polyatomic alcohol. The nickel anode accumulator obtained by the nickel anode prepared by the anode slurry of the invention has excellent consistence of circulation performance; furthermore, the battery has good comprehensive electro-chemical performance simultaneously.

Description

technical field [0001] The invention relates to a positive electrode slurry for a battery and a method for preparing the positive electrode and a battery using the slurry. Specifically, the present invention relates to a positive electrode slurry for a nickel positive storage battery and using the slurry to prepare a nickel positive electrode and a nickel positive storage battery Methods. Background technique [0002] Nickel positive battery has the advantages of high specific power, long service life, small size, light weight and high cost performance, and is widely used in communication tools, electric tools and various instruments. Taking nickel-cadmium batteries as an example, the nickel electrodes of existing nickel positive batteries are mainly prepared in two ways: sintered electrodes and non-sintered electrodes. The preparation method of sintered electrode is usually to first coat the positive electrode slurry containing binder and metal nickel powder on the nickel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M4/52H01M4/32H01M4/26H01M10/28H01M10/30
CPCY02E60/124Y02E60/10Y02P70/50
Inventor 辜敏张学全周文会
Owner BYD CO LTD
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