Title:
HIGH-TAP-DENSITY LITHIUM IRON PHOSPHATE POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/226372
Kind Code:
A1
Abstract:
The present invention provides a high-tap-density lithium iron phosphate positive electrode material, and a preparation method therefor and the use thereof. The method comprises: subjecting a mixed solution of an iron source, a lithium source, a carbon source and an ion doping agent to a grinding treatment and a spraying treatment in sequence to obtain a precursor powder; and sintering the precursor powder at a high temperature to obtain the lithium iron phosphate positive electrode material. The method is simple in terms of process, controllable in terms of procedures and high in terms of production efficiency. The lithium iron phosphate positive electrode material has the advantageous characteristics of high tap density, high specific capacity, etc.; and due to the unique morphology thereof, the lithium iron phosphate positive electrode material can be mixed with a ternary material for use, such that the safety of a lithium iron phosphate battery can be ensured, and the characteristics of both high energy density and low temperature resistance of a ternary battery can be achieved.
Inventors:
YANG JIAOJIAO (CN)
WANG QIN (CN)
ZHAO XU (CN)
WANG QIN (CN)
ZHAO XU (CN)
Application Number:
PCT/CN2022/137777
Publication Date:
November 30, 2023
Filing Date:
December 09, 2022
Export Citation:
Assignee:
HUBEI WANRUN NEW ENERGY TECH CO LTD (CN)
International Classes:
C01B25/45; H01M4/36; H01M4/505; H01M4/525; H01M4/58; H01M10/0525
Foreign References:
| CN114804058A | 2022-07-29 | |||
| CN114335478A | 2022-04-12 | |||
| CN106992297A | 2017-07-28 | |||
| CN113991112A | 2022-01-28 | |||
| CN113929073A | 2022-01-14 | |||
| CN113929070A | 2022-01-14 | |||
| CN107565111A | 2018-01-09 | |||
| US20090148765A1 | 2009-06-11 |
Attorney, Agent or Firm:
ZHONG LUN LAW FIRM (CN)
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