Title:
SILICON-BASED PARTICLE HAVING CORE-SHELL STRUCTURE AND PREPARATION METHOD THEREFOR, NEGATIVE ELECTRODE MATERIAL, ELECTRODE PLATE, AND BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/122023
Kind Code:
A1
Abstract:
The present application provides a silicon-based particle having a core-shell structure and a preparation method therefor, a negative electrode material, an electrode plate, and a battery. The silicon-based particle comprises: a core particle, comprising an oxygen-containing silicon-based compound matrix and an elemental nano silicon particle, the molar ratio of oxygen to silicon in the core particle being 0.5-1.5; a silicon carbide shell, covering the core particle; and a carbon layer, covering the silicon carbide shell. The silicon-based particle is used for a battery, and has the characteristics such as low expansion rate, longer cycle life, high capacity, and high coulombic efficiency.
Inventors:
LI ZHE (CN)
ZHANG HEBAO (CN)
LUO SHU (CN)
ZHA DAOSONG (CN)
WANG CEN (CN)
ZHANG HEBAO (CN)
LUO SHU (CN)
ZHA DAOSONG (CN)
WANG CEN (CN)
Application Number:
PCT/CN2021/137149
Publication Date:
June 16, 2022
Filing Date:
December 10, 2021
Export Citation:
Assignee:
AMPRIUS NANJING CO LTD (CN)
International Classes:
H01M4/36; H01M4/38; H01M4/48; H01M4/62; H01M10/0525
Domestic Patent References:
| WO2015145522A1 | 2015-10-01 |
Foreign References:
| CN112635727A | 2021-04-09 | |||
| CN112687852A | 2021-04-20 | |||
| CN112687851A | 2021-04-20 | |||
| CN108598404A | 2018-09-28 | |||
| CN111180693A | 2020-05-19 | |||
| CN103022439A | 2013-04-03 | |||
| CN108390049A | 2018-08-10 | |||
| CN107482200A | 2017-12-15 |
Attorney, Agent or Firm:
BEIJING LAWSING IP FIRM (CN)
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