Title:
ARTIFICIAL GRAPHITE, SECONDARY BATTERY, PREPARATION METHOD, AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/108982
Kind Code:
A1
Abstract:
Disclosed are an artificial graphite, a secondary battery, a preparation method and a device. The artificial graphite comprises secondary particles formed by the aggregation of primary particles. The volumetric mean particle size Dv50 of the artificial graphite is denoted as A, the volumetric mean particle size Dv50 of the artificial graphite after powder compacting at a pressure of 2000 kg is denoted as B, and A and B satisfy B/A ≥ 0.85. Using the artificial graphite provided by the present application can greatly reduce the cycle expansion of a secondary battery.
Inventors:
HE LIBING (CN)
Application Number:
PCT/CN2019/122650
Publication Date:
June 10, 2021
Filing Date:
December 03, 2019
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/587; C01B32/205; H01M10/0525
Foreign References:
| CN109704323A | 2019-05-03 | |||
| CN105938906A | 2016-09-14 | |||
| KR20190062319A | 2019-06-05 | |||
| CN109704324A | 2019-05-03 | |||
| US20140127488A1 | 2014-05-08 | |||
| CN108807974A | 2018-11-13 |
Other References:
See also references of EP 3923387A4
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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