Title:
IRREVERSIBLE ADDITIVE COMPRISED IN CATHODE MATERIAL FOR SECONDARY BATTERY, CATHODE MATERIAL COMPRISING SAME, AND SECONDARY BATTERY COMPRISING CATHODE ACTIVE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2021/054620
Kind Code:
A1
Abstract:
The present invention provides: an irreversible additive comprised in a cathode material for a secondary battery, wherein the irreversible additive is an oxide presented by chemical formula 1, the oxide having a trigonal crystal system; a cathode material comprising the irreversible additive; and a secondary battery comprising the cathode material. Li2+1Ni1-bMbO2+c (1)
In chemical formula 1, -0.2≤a≤0.2, 0≤b<0.5, and 0≤c≤0.2, wherein M is at least one element selected from the group consisting of Cu, Mg, Pt, Al, Co, P, and B.
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Inventors:
LIM SUNG CHUL (KR)
JANG MINCHUL (KR)
UHM INSUNG (KR)
YOUN HEE CHANG (KR)
JANG MINCHUL (KR)
UHM INSUNG (KR)
YOUN HEE CHANG (KR)
Application Number:
PCT/KR2020/010968
Publication Date:
March 25, 2021
Filing Date:
August 18, 2020
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M4/02; H01M4/62; H01M4/131; H01M4/505; H01M4/525; H01M10/052
Foreign References:
| KR20190059242A | 2019-05-30 | |||
| JPH06150929A | 1994-05-31 | |||
| KR20070077700A | 2007-07-27 | |||
| JP5318565B2 | 2013-10-16 |
Other References:
HOCHUN LEE, SUNG-KYUN CHANG, EUN-YOUNG GOH, JUN-YONG JEONG, JAE HYUN LEE, HYEONG-JIN KIM, JEONG-JU CHO, SEUNG-TAE HONG: "Li 2 NiO 2 as a Novel Cathode Additive for Overdischarge Protection of Li-Ion Batteries", CHEMISTRY OF MATERIALS, vol. 20, no. 1, 1 January 2008 (2008-01-01), pages 5 - 7, XP055104578, ISSN: 0897-4756, DOI: 10.1021/cm702290p
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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