Title:
LITHIUM SECONDARY BATTERY HAVING EXTENDED SERVICE LIFE AND ULTRA-HIGH ENERGY DENSITY
Document Type and Number:
WIPO Patent Application WO/2019/078691
Kind Code:
A1
Abstract:
The present invention relates to a lithium secondary battery having an extended service life and ultra-high energy density, the lithium secondary battery according to the present invention comprising a pre-lithiated negative electrode, having total irreversible capacity of the positive electrode that is greater than the total irreversible capacity of the negative electrode while satisfying 150 < (negative electrode discharge capacity/lithium secondary battery discharge capacity) x 100 < 300, and having comparative negative electrode potential of lithium metal of -0.1-0.7V in the driving voltage range of the lithium secondary battery, thereby allowing the rate at which capacity is maintained at 60% or higher to be sustained even at 500 cycles or greater while reaching energy density of 800Wh/L per volume.
Inventors:
SONG JUN HYUK (KR)
KIM EUN KYUNG (KR)
LEE YONG JU (KR)
WOO SANG WOOK (KR)
CHUNG JU HO (KR)
NOH SUK IN (KR)
KIM EUN KYUNG (KR)
LEE YONG JU (KR)
WOO SANG WOOK (KR)
CHUNG JU HO (KR)
NOH SUK IN (KR)
Application Number:
PCT/KR2018/012456
Publication Date:
April 25, 2019
Filing Date:
October 19, 2018
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M4/134; H01M4/04; H01M4/62; H01M10/0525; H01M10/42
Foreign References:
| KR20100127730A | 2010-12-06 | |||
| JP2004165097A | 2004-06-10 | |||
| KR20150020022A | 2015-02-25 | |||
| US20160301080A1 | 2016-10-13 | |||
| KR101594784B1 | 2016-02-17 |
Other References:
SANDHYA, C.P.: "Sn/A1203/C/CNT composite prepared by wet milling as anode material for lithium-ion cells", JOURNAL OF SCIENCE, vol. 2, no. 2, 23 April 2017 (2017-04-23), pages 210 - 214, XP055689616, ISSN: 2468-2179
See also references of EP 3683867A4
See also references of EP 3683867A4
Attorney, Agent or Firm:
BAE, KIM & LEE IP GROUP (KR)
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