Title:
CATHODE ACTIVE MATERIAL, METHOD FOR MANUFACTURING SAME, AND LITHIUM SECONDARY BATTERY COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2018/190675
Kind Code:
A1
Abstract:
Provided is a cathode active material. The cathode active material has a nickel content of 60mol% or more, comprises lithium and an addition metal, and has a first crystal structure having an intrinsic lattice constant in a c-axis direction. In the charging and discharging process, a second crystal structure, having a longer lattice constant in the c-axis direction than the first crystal structure, and a third crystal structure, having a shorter lattice constant in the c-axis direction than the first crystal structure, are generated. By the addition metal, the amount of change in the production ratio of the second crystal structure and the third crystal structure generated in the charging and discharging process is reduced.
Inventors:
SUN YANG-KOOK (KR)
KIM UN HYUCK (KR)
KIM UN HYUCK (KR)
Application Number:
PCT/KR2018/004343
Publication Date:
October 18, 2018
Filing Date:
April 13, 2018
Export Citation:
Assignee:
IUCF HYU (KR)
International Classes:
H01M4/525; C01G53/00; H01M4/485; H01M4/505; H01M10/052; H01M10/44
Foreign References:
| KR20130143427A | 2013-12-31 | |||
| KR20020026655A | 2002-04-12 | |||
| KR20160069992A | 2016-06-17 | |||
| JP2000195514A | 2000-07-14 | |||
| KR20140119621A | 2014-10-10 | |||
| KR20130150315A | 2013-12-05 |
Other References:
CHO, YOUNGHYUN: "LiNi0.8Co0.15A10.0502 cathode materials prepared by Ti02 nanoparticle coatings on Ni0.8Co0.15A10.05(0H)2 precursors", ELECTROCHIMICA ACTA, vol. 56, no. 1, 16 September 2010 (2010-09-16), pages 333 - 339, XP055559451, Retrieved from the Internet
See also references of EP 3611785A4
See also references of EP 3611785A4
Attorney, Agent or Firm:
PARK, Sangyoul (KR)
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