Title:
ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/087209
Kind Code:
A1
Abstract:
An electrochemical device and an electronic device. The electrochemical device comprises a positive electrode, a negative electrode, an isolation film and an electrolyte. The electrolyte comprises a lithium salt, an organic solvent and an additive, wherein the room temperature conductivity of the electrolyte is b mS/cm, the single-sided coating weight of the single sheet of the positive electrode is ag/1540.25 mm 2, and the relationship between A and B satisfies: b is greater than or equal to 50.859a 2-16.044a + 8.2071, and a is greater than or equal to 0.2 and less than or equal to 0.55. The electrochemical device has improved long-term cycling performance and high-temperature storage performance, and at the same time maintains good battery charging performance and energy efficiency.
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Inventors:
XU CHUNRUI (CN)
ZHOU SHAOYUN (CN)
ZHOU SHAOYUN (CN)
Application Number:
PCT/CN2021/131471
Publication Date:
May 25, 2023
Filing Date:
November 18, 2021
Export Citation:
Assignee:
NINGDE AMPEREX TECHNOLOGY LTD (CN)
International Classes:
H01M4/131; H01M10/056
Foreign References:
| CN112909318A | 2021-06-04 | |||
| CN102255105A | 2011-11-23 | |||
| CN102938328A | 2013-02-20 | |||
| CN212907803U | 2021-04-06 | |||
| CN110265626A | 2019-09-20 | |||
| JP2017063013A | 2017-03-30 | |||
| JP2017103163A | 2017-06-08 |
Attorney, Agent or Firm:
HUAHE IP LIMITED (CN)
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