Title:
LITHIUM IRON PHOSPHATE COMPOSITE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/108961
Kind Code:
A1
Abstract:
Provided in the present disclosure are a lithium iron phosphate composite material, and a preparation method therefor and the use thereof. The lithium iron phosphate composite material comprises a core and a shell that covers the surface of the core, wherein the core is Li6MnO4, and the shell is carbon-coated lithium iron phosphate. The lithium iron phosphate composite material provided in the present disclosure uses Li6MnO4 as a positive electrode lithium supplementation material, and solves the problems of the loss of active lithium and the severe capacity depletion of a lithium iron phosphate positive electrode material during high-rate charging and discharging, such that the rate capability of the lithium iron phosphate material is improved, and the cycle life of a battery under high-rate conditions is prolonged.
Inventors:
WAN NING (CN)
YANG HONGXIN (CN)
LIU JING (CN)
YANG HONGXIN (CN)
LIU JING (CN)
Application Number:
PCT/CN2022/086015
Publication Date:
June 22, 2023
Filing Date:
April 11, 2022
Export Citation:
Assignee:
SVOLT ENERGY TECH CO LTD (CN)
International Classes:
H01M4/505; H01M4/36; H01M4/58; H01M4/62; H01M10/0525
Foreign References:
| CN114242980A | 2022-03-25 | |||
| CN109390563A | 2019-02-26 | |||
| CN112054166A | 2020-12-08 | |||
| CN108682894A | 2018-10-19 | |||
| CN113555538A | 2021-10-26 | |||
| CN113097455A | 2021-07-09 | |||
| CN107968195A | 2018-04-27 | |||
| CN110299515A | 2019-10-01 | |||
| JP2019145402A | 2019-08-29 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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