NEGATIVE ACTIVE MATERIAL, NEGATIVE ELECTRODE COMPRISING SAME, SECONDARY BATTERY COMPRISING SAME, AND METHOD FOR PRODUCING NEGATIVE ACTIVE MATERIAL

WIPO Patent Application WO/2024/053939

A1

The present invention relates to negative active material, a negative electrode comprising same, a secondary battery comprising the negative electrode, and a method for producing the negative active material. The negative active material comprises both a surface layer comprising Li, Al, and P, and oxides comprising one or more from the group consisting of Zr, B, Al, Zn, W, and Ti in the interfacial surface between the silicon-based particles and carbon layer, thereby lowering the reactivity of silicate that is highly reactive with water or bases and easily blocking contact with the outside. Therefore, the phase stability of the negative electrode slurry is improved, and charging and discharging efficiency of the negative electrode produced therewith is improved.

JP2007035358	POSITIVE ELECTRODE ACTIVE SUBSTANCE, ITS MANUFACTURING METHOD AND LITHIUM ION SECONDARY BATTERY
WO/2024/071928	CATHODE AND ALL-SOLID-STATE SECONDARY BATTERY COMPRISING SAME
WO/2019/230149	POSITIVE ELECTRODE ACTIVE MATERIAL AND BATTERY PROVIDED WITH SAME

CHOI JUNGHYUN (KR)
PARK SEMI (KR)
PARK HEEYEON (KR)
SHIN SUN YOUNG (KR)
OH ILGEUN (KR)
LEE YONG JU (KR)

PCT/KR2023/013057

March 14, 2024

September 01, 2023

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LG ENERGY SOLUTION LTD (KR)

H01M4/36; H01M4/02; H01M4/48; H01M4/62; H01M10/052

KR20220092556A	2022-07-01
KR20220107281A	2022-08-02
US20180175377A1	2018-06-21
CN113381021A	2021-09-10
US20220231282A1	2022-07-21

CHOI, Hee-Kyeong (KR)

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