Title:
LITHIUM SECONDARY BATTERY HAVING IMPROVED CHARACTERISTICS
Document Type and Number:
WIPO Patent Application WO/2010/058993
Kind Code:
A2
Abstract:
The present invention relates to a lithium secondary battery containing an electrolyte consisting of a non-aqueous solvent, a lithium salt and a cathode which comprises 20-100 wt. % lithium transition metal oxide expressed as chemical formula (Li1+zNibMncMe1-(b+c)O2), as the active cathode material. The above electrolyte includes a first additive for forming a protective film (SEI film, or Solid Electrolyte Interface) on the surface of the active anode material, as well as a second additive for forming an SEI film on the surface of the active anode material, while rendering inactive any impurities present on the active cathode material.
Inventors:
KIM SOOJIN (KR)
PARK HONG-KYU (KR)
CHANG SUNG KYUN (KR)
CHO JEONG-JU (KR)
LEE HOCHUN (KR)
PARK HONG-KYU (KR)
CHANG SUNG KYUN (KR)
CHO JEONG-JU (KR)
LEE HOCHUN (KR)
Application Number:
PCT/KR2009/006850
Publication Date:
May 27, 2010
Filing Date:
November 20, 2009
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
KIM SOOJIN (KR)
PARK HONG-KYU (KR)
CHANG SUNG KYUN (KR)
CHO JEONG-JU (KR)
LEE HOCHUN (KR)
KIM SOOJIN (KR)
PARK HONG-KYU (KR)
CHANG SUNG KYUN (KR)
CHO JEONG-JU (KR)
LEE HOCHUN (KR)
International Classes:
H01M4/48; H01M10/0525
Foreign References:
| KR20040065152A | 2004-07-21 | |||
| JP2006086101A | 2006-03-30 |
Other References:
J. POWDER SOURCES, vol. 51, 1994, pages 79 - 104
SHOICHIRO MORI: "Chemical properties of various organic electrolytes for lithium rechargeable batteries", J. POWER SOURCE, vol. 68, 1997
See also references of EP 2357692A4
SHOICHIRO MORI: "Chemical properties of various organic electrolytes for lithium rechargeable batteries", J. POWER SOURCE, vol. 68, 1997
See also references of EP 2357692A4
Attorney, Agent or Firm:
SOHN, CHANG KYU (KR)
손창규 (KR)
손창규 (KR)
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