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Graphite water-base cathode formula and preparation method thereof

A graphite anode, water-based technology, applied in electrode manufacturing, active material electrodes, etc., can solve the problems of high production cost of oil-based system batteries, large environmental pollution, unstable water-based system slurry, etc., and achieve low production costs and environmental pollution. , the effect of slurry stability

Inactive Publication Date: 2009-12-16
ZHUHAI LIYUAN NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology has the following disadvantages: the slurry of the water-based system is unstable; the production cost of the battery of the oil-based system is high, and the environmental pollution is large

Method used

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  • Graphite water-base cathode formula and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] In parts by weight, the formula of the present invention is:

[0018] Graphite negative electrode 100 parts

[0019] 40 parts of water-based adhesive

[0020] 60 parts deionized water

[0021] Alcohol 4 parts

[0022] Its preparation method is: it comprises the following steps:

[0023] (a): Add 40 parts of the water-based adhesive to the cleaned vacuum mixing tank, then add 60 parts of the deionized water, and start the mixer to stir for 30 to 60 minutes;

[0024] (b): Add 4 parts of the alcohol and stir for 10-30 minutes;

[0025] (c): adding 100 parts of the graphite negative electrode and stirring for 3 to 5 hours;

[0026] (d): The stirred slurry is passed through a sieve of 80-120 meshes to prepare an electrode.

Embodiment 2

[0028] In parts by weight, the formula of the present invention is:

[0029] Graphite negative electrode 100 parts

[0030] 60 parts of water-based adhesive

[0031] 80 parts of deionized water

[0032] Alcohol 6 parts

[0033] The preparation method is the same as that of Example 1, except that: 60 parts of water-based adhesive, 80 parts of deionized water, and 6 parts of alcohol.

Embodiment 3

[0035] In parts by weight, the formula of the present invention is:

[0036] Graphite negative electrode 100 parts

[0037] 50 parts of water-based adhesive

[0038] 70 parts of deionized water

[0039] Alcohol 5 parts

[0040] The preparation method is the same as that of Example 1, except that: 50 parts of water-based adhesive, 70 parts of deionized water, and 5 parts of alcohol.

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Abstract

The invention discloses a graphite water-base cathode formula and a preparation method thereof, aiming to provide a graphite water-base cathode formula with stable slurry, low production cost and little environmental pollution and a preparation method thereof. The invention comprises the following components according to the parts by weight: 100 parts of graphite, 40-60 parts of water-base binder, 60-80 parts of deionized water and 4-6 parts of ethanol. The invention can be widely used in the field of the cathode blending of the lithium ion secondary battery and the battery producing and processing field.

Description

technical field [0001] The invention relates to a graphite water-based negative electrode formula and a preparation method. Background technique [0002] At present, in the production process of lithium-ion batteries, graphite negative electrode ingredients mainly include water-based system and oily system; due to the non-polar characteristics of graphite negative electrode, it is relatively easy to use graphite negative electrode ingredients in oily system, while it is relatively difficult to use graphite negative electrode ingredients in water-based system , and different manufacturers have many different graphite negative electrode formulations and batching processes. For different battery performance requirements, the battery formulation and batching process are also different. Different battery formulations have an impact on battery processing performance, electrical performance, and cycle performance. The prior art has the following disadvantages: the slurry in the wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/02H01M4/04
CPCY02E60/12Y02E60/10
Inventor 朱经纬纪玉兰
Owner ZHUHAI LIYUAN NEW ENERGY TECH
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