Title:
POSITIVE ELECTRODE SHEET AND ELECTROCHEMICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/098791
Kind Code:
A1
Abstract:
A positive electrode sheet and an electrochemical device. The positive electrode sheet comprises a current collector (10), a positive electrode active material layer (14) and an adhesive layer (12) provided between the current collector and the positive electrode active material layer. The adhesive layer (12) comprises a polymer material, a conductive material and an inorganic filler. The polymer material comprises an adhesive layer matrix. The adhesive layer matrix is an oily polymer material having a solubility in NMP at 130 °C within 5 min of 30% or less of that in PVDF under the same conditions. The positive electrode sheet can improve the nailing safety of electrochemical devices (for example, capacitors, primary batteries, secondary batteries and the like) in the case of abnormal conditions such as nailing.
Inventors:
LI WEI (CN)
SHI HAIHAO (CN)
LIU HUIHUI (CN)
JIN CHAO (CN)
XU JIANBAO (CN)
LI SHISONG (CN)
GUO CHAO (CN)
SHI HAIHAO (CN)
LIU HUIHUI (CN)
JIN CHAO (CN)
XU JIANBAO (CN)
LI SHISONG (CN)
GUO CHAO (CN)
Application Number:
PCT/CN2019/118843
Publication Date:
May 22, 2020
Filing Date:
November 15, 2019
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/66
Foreign References:
| CN106935901A | 2017-07-07 | |||
| CN104157880A | 2014-11-19 | |||
| CN101232104A | 2008-07-30 | |||
| CN106784617A | 2017-05-31 | |||
| CN102832392A | 2012-12-19 | |||
| US20120225199A1 | 2012-09-06 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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