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A positive electrode slurry for a high specific energy zinc-nickel battery and a positive electrode slurrying method

A zinc-nickel battery and positive electrode slurry technology, which is applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of softening and falling off of active materials, loose bonding, uneven distribution of components, etc., to reduce time and improve bonding Power, the effect of improving charge acceptance

Active Publication Date: 2021-04-27
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above analysis, the present application aims to provide a positive electrode slurry for a high specific energy zinc-nickel battery and a positive electrode slurrying method, which solves the problem of loose bonding between the active material and the matrix of the zinc-nickel battery in the prior art, and the The problems of uneven distribution and low viscosity of the slurry lead to softening and falling off of the active material, poor consistency of the battery, and short cycle life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054]The positive slurry of the high proportion of the energy zinc nickel battery in this embodiment consists of a mass percentage comprising: hydroxide 30%, nickel powder 16%, 0.7% naphthaleice acetal condensate, polytetrafluoroethylene emulsion 0.3%, The trioxide is 0.5%, and the polyaniline is 1.9%, 0.6% sodium perborate and 0.7% hydroxypropylmethylcellulose, and the margin is water.

[0055]The positive pulping method of the present embodiment includes the steps of:

[0056]Step 1: A proportion of nickel hydroxide, water, nickel powder, naphthalenesulfonate, polytetrafluoroethylene emulsion, trioxide, polyaniline, sodium perborate, and hydroxypropylmethylcellulose.

[0057]Step 2: Divide nickel hydroxide into two parts, 1 / 3 of the first part of the nickel hydroxide is 1 / 3 of the nickel hydroxide, and the trioxide, polyaniline, sodium hypercorate, and hydroxypropyl methylcellulose. In the first part of nickel hydroxide, the initial mixture was mixed with 60 rpm to obtain a primary mixtur...

Embodiment 2

[0062]The positive slurry of the high proportion of the energy zinc nickel battery in this embodiment consists of 37% hydroxide by mass, nickel oxide 19%, naphthaleice acetal condensate, 0.1% of polytetrafluoroethylene emulsion, 0.9% of trioxide, 1.2% polyaniline, 1.0% per borate, 0.3% of hydroxypropylmethylcellulose, and margin.

[0063]The positive pulping method of the present embodiment includes the steps of:

[0064]Step 1: A proportion of nickel hydroxide, water, nickel powder, naphthalenesulfonate, polytetrafluoroethylene emulsion, trioxide, polyaniline, sodium perborate, and hydroxypropylmethylcellulose.

[0065]Step 2: Divide nickel hydroxide into two parts, 1 / 2 of the total amount of nickel hydroxide is 1 / 2 of nickel hydroxide, and the trioxide, polyaniline, sodium hypercorate, and hydroxypropyl methylcellulose sequentially In the first part of the nickel hydroxide, the initial mixture was mixed with 90 rpm to obtain a primary mixture, and a second part of nickel hydroxide was adde...

Embodiment 3

[0070]The high proportion of the energy zinc nickel battery of the present embodiment consists of 39% hydroxide, 15%, nickel powder, 0.3% of the polytetrafluoroethylene emulsion, 0.9% naphthaleice acetal condensate, and 0.3% of the polytetrafluoroethylene emulsion. 0.6% of trioxide, 1.0% polyaniline, 0.5% sodium perborate and 0.8% hydroxypropylmethylcellulose, and water.

[0071]The positive pulping method of the present embodiment includes the steps of:

[0072]Step 1: A proportion of nickel hydroxide, water, nickel powder, naphthalenesulfonate, polytetrafluoroethylene emulsion, trioxide, polyaniline, sodium perborate, and hydroxypropylmethylcellulose.

[0073]Step 2: Divide nickel hydroxide into two parts, 1 / 3 of the first part of the nickel hydroxide is 1 / 3 of the nickel hydroxide, and the trioxide, polyaniline, sodium hypercorate, and hydroxypropyl methylcellulose. In the first part of the nickel hydroxide, mixed with 150 rpm for 5 min to obtain a primary mixture, and a second part of ni...

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Abstract

The application discloses a positive electrode slurry for a high specific energy zinc-nickel battery and a positive electrode slurrying method, which belongs to the technical field of zinc-nickel battery preparation technology, and solves the problem that the active material and the substrate of the zinc-nickel battery are not tightly bonded in the prior art , The uneven distribution of each component and the low viscosity of the slurry lead to softening and falling off of the active material, poor consistency of the battery, and short cycle life. The composition of the positive electrode slurry of the present application includes: 30% to 40% of nickel hydroxide, 15% to 20% of nickel powder, 0.2% to 1% of naphthalenesulfonic acid formaldehyde condensate, and 0.1% to polytetrafluoroethylene emulsion. 0.3%, antimony trioxide 0.5%-1%, polyaniline 1%-2%, sodium perborate 0.5%-1%, hydroxypropyl methylcellulose 0.3%-0.8%, and the balance is water. The positive electrode slurry and the positive electrode slurry preparation method of the high specific energy zinc-nickel battery of the present application can be used for the preparation of the zinc-nickel battery.

Description

Technical field[0001]The present application relates to a zinc nickel battery preparation process, and more particularly to a positive electrode slurry with high proportion of energy zinc nickel batteries and a positive pulping method.Background technique[0002]As the contribution of electric vehicles on vehicle drive increases, the battery energy demand is greatly improved, especially the full-mixing and plug-in hybrid vehicles to make more stringent standards for the energy of the battery.[0003]Emerging high than energy zinc nickel batteries have high operating voltages, high-energy density, no environmental pollution, high safety index, low production cost, etc., is a secondary battery that can be recycled. However, the number of cycles of energy zinc nickel batteries is limited, which greatly restricts the development of high proportional energy zinc nickel battery.[0004]In a high-proportion-to-energy zinc nickel battery, the active substance is bonded between the active substanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/48H01M4/52H01M4/60
CPCH01M4/36H01M4/364H01M4/48H01M4/52H01M4/602Y02E60/10
Inventor 柯娃丁青青谢爽马永泉刘孝伟
Owner CHAOWEI POWER CO LTD
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