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Title:
CONDUCTIVE COATING ALUMINUM FOIL FOR LITHIUM ION BATTERY AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/019655
Kind Code:
A1
Abstract:
Disclosed are a conductive coating aluminum foil for a lithium ion battery and a preparation method therefor, comprising an aluminum foil body and a conductive coating. The conductive coating is uniformly coated on the two surfaces of the aluminum foil; the conductive coating comprises the following components in parts by weight: 85-95 parts of environment-friendly adhesive, 5-15 parts of conductive filler, and 1-3 parts of surfactant; the preparation method comprises the following steps: 1. providing the conductive coating; 2. performing surface treatment of the aluminum foil; 3. coating the conductive coating; 4. performing coating forming. In the present disclosure, by means of the reasonable formula design of conductive paste and the effective coating process, the conductive coating can be firmly adhered to the surfaces of the aluminum foil, and the conductive effect of the coating is remarkable, and moreover, an adhesive system is safe and environment-friendly. The obtained aluminum foil for the lithium ion battery can significantly reduce the internal resistance of the battery, improve the diffusion rate of lithium ions, make the battery excellent in cycle performance and low-temperature resistance, and prolong the service life of the battery.

Inventors:
ZHANG, Quancheng (West of Baimao, Guli Town Changsh, Suzhou Jiangsu 0, 215500, CN)
WU, Yongxin (West of Baimao, Guli Town Changsh, Suzhou Jiangsu 0, 215500, CN)
Application Number:
CN2018/122843
Publication Date:
January 30, 2020
Filing Date:
December 21, 2018
Export Citation:
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Assignee:
JIANGSU ALCHA ALUMINIUM CO., LTD. (West of Baimao, Guli Town Changsh, Suzhou Jiangsu 0, 215500, CN)
International Classes:
H01M4/62
Foreign References:
CN109037692A2018-12-18
CN106047015A2016-10-26
CN106047015A2016-10-26
CN203456540U2014-02-26
CN103137942A2013-06-05
CN103137942A2013-06-05
JP2015118865A2015-06-25
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (Room 1215-1218, Floor 12Left Bank Community No.68 Beisihuanxilu,Haidian District, Beijing 0, 100080, CN)
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