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Title:
ANODE HAVING DOUBLE-PROTECTION LAYER FORMED THEREON FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2018/062934
Kind Code:
A1
Abstract:
The present invention relates to an anode having a double-protection layer formed thereon for a lithium secondary battery and, more specifically, to an anode having a polymer-protection layer and a carbon-based protection layer formed thereon for a lithium secondary battery, and a lithium secondary battery comprising the same. The formation of a stable lithium fluoride (LiF) membrane in a lithium secondary battery including an anode according to the present invention prevents the loss of a solid electrolyte interface (SEI) layer to allow the battery to be improved in performance and exhibit stable performance. Also, dead lithium or lithium dendrites are absorbed to prevent the occurance of a short circuit inside the battery, thereby improving charge/discharge cycle life characteristics in the battery.

Inventors:
CHOI, Heewon (LG Chem Research Park, 188 Munji-ro,,Yuseong-gu, Daejeon, 34122, KR)
WOO, Sangwook (LG Chem Research Park, 188 Munji-ro,,Yuseong-gu, Daejeon, 34122, KR)
CHAE, Ohbyong (LG Chem Research Park, 188 Munji-ro,,Yuseong-gu, Daejeon, 34122, KR)
KIM, Eun Kyung (LG Chem Research Park, 188 Munji-ro,,Yuseong-gu, Daejeon, 34122, KR)
Application Number:
KR2017/010924
Publication Date:
April 05, 2018
Filing Date:
September 29, 2017
Export Citation:
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Assignee:
LG CHEM, LTD. (128 Yeoui-daero, Yeongdeungpo-gu, Seoul, 07336, KR)
International Classes:
H01M4/134; H01M4/62; H01M10/0525; H01M10/42
Foreign References:
KR20160052351A2016-05-12
US20090148769A12009-06-11
KR20040026208A2004-03-30
KR100485336B12005-04-27
KR20160034183A2016-03-29
KR20160052351A2016-05-12
Other References:
See also references of EP 3386008A4
Attorney, Agent or Firm:
KIM, Sung Ho et al. (5F, 8 Teheran-ro 8-gil,,Gangnam-gu, Seoul, 06233, KR)
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