Title:
POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE COMPOSITE MATERIAL, AND BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/012102
Kind Code:
A1
Abstract:
Provided is a positive electrode material comprising multiple secondary composite particles. Each secondary composite particle comprises multiple positive electrode material primary particles; the secondary composite particles satisfy: 0.9≤0.1d/a+b*c≤20, where a represents the value of the particle size D50 of the positive electrode material primary particles, and the unit thereof is μm; b represents the value of the particle size D50 of the secondary composite particles, and the unit thereof is μm; c represents the value of the specific surface area of the secondary composite particles, and the unit thereof is m2/g; and d represents the number of positive electrode material primary particles in the secondary composite particles.
Inventors:
CHEN NA (CN)
RUAN ZEWEN (CN)
TIAN YECHENG (CN)
DENG XUANWEI (CN)
ZHANG NAN (CN)
RUAN ZEWEN (CN)
TIAN YECHENG (CN)
DENG XUANWEI (CN)
ZHANG NAN (CN)
Application Number:
PCT/CN2021/087569
Publication Date:
January 20, 2022
Filing Date:
April 15, 2021
Export Citation:
Assignee:
BYD CO LTD (CN)
International Classes:
H01M4/525
Domestic Patent References:
| WO2020085731A1 | 2020-04-30 |
Foreign References:
| CN111384371A | 2020-07-07 | |||
| CN110265631A | 2019-09-20 | |||
| JP2016139569A | 2016-08-04 | |||
| CN101584062A | 2009-11-18 |
Other References:
See also references of EP 4184615A4
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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