Title:
POSITIVE POLE PIECE AND ELECTROCHEMICAL APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/098788
Kind Code:
A1
Abstract:
A positive pole piece and an electrochemical apparatus. The positive pole piece comprises a current collector (10), a positive active material layer (14) and a safety coating (12) disposed between the current collector (10) and the positive active material layer (14); the safety coating (12) contains a polymer matrix, a conductive material and an inorganic filler, the polymer matrix being a fluorinated polyolefin and/or a chlorinated polyolefin, and the weight ration of the polymer matrix and the conductive material being greater than or equal to two. The described positive pole piece may ameliorate the nail penetration safety performance of the electrochemical apparatus (such as a capacitor, a primary battery or a secondary battery, etc.).
Inventors:
JIN HAIZU (CN)
ZHANG XIAOWEN (CN)
LI ZHENHUA (CN)
ZHANG XIAOWEN (CN)
LI ZHENHUA (CN)
Application Number:
PCT/CN2019/118827
Publication Date:
May 22, 2020
Filing Date:
November 15, 2019
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/13
Foreign References:
| CN107437622A | 2017-12-05 | |||
| CN105470523A | 2016-04-06 | |||
| CN107004858A | 2017-08-01 | |||
| CN105594019A | 2016-05-18 | |||
| CN106558676A | 2017-04-05 | |||
| CN104823313A | 2015-08-05 |
Other References:
See also references of EP 3787069A4
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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