Title:
CABLE-TYPE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2013/055185
Kind Code:
A2
Abstract:
The present invention relates to a cable-type secondary battery comprising: a lithium-ion supply core portion; an inner electrode comprising an inner current collector that encases the outer surface of the lithium-ion supply core portion and has an open structure, an active material layer that is formed on the surface of the inner current collector, and an electrolyte absorbing layer that is formed on the outer surface of the active material layer; a separation layer, which is formed so as to encase the outer surface of the inner electrode, for preventing a short circuit of an electrode; and an outer electrode that encases the outer surface of the separation layer, and is provided with an outer electrode active material layer and an outer current collector, wherein the cable-type secondary battery has a horizontal cross-section that has a specific shape and is extended in the lengthwise direction. The lithium-ion supply core portion comprising the electrolyte, according to the present invention, is positioned inside the inner electrode, which has an open structure, wherein the electrolyte in the lithium-ion supply core portion can easily penetrate into the active material of the electrode, thereby facilitating supply and exchange of lithium-ion. Also, the inner electrode, according to the present invention, is provided with the electrolyte absorbing layer on the outer surface thereof, which allows containing the electrolyte in the lithium-ion supply core portion inside the inner electrode, thereby facilitating supply and exchange of lithium-ion.
Inventors:
KWON YO-HAN (KR)
WOO SANG-WOOK (KR)
JUNG HYE-RAN (KR)
KIM JE-YOUNG (KR)
KIM IN-CHUL (KR)
WOO SANG-WOOK (KR)
JUNG HYE-RAN (KR)
KIM JE-YOUNG (KR)
KIM IN-CHUL (KR)
Application Number:
PCT/KR2012/008397
Publication Date:
April 18, 2013
Filing Date:
October 15, 2012
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
KWON YO-HAN (KR)
WOO SANG-WOOK (KR)
JUNG HYE-RAN (KR)
KIM JE-YOUNG (KR)
KIM IN-CHUL (KR)
KWON YO-HAN (KR)
WOO SANG-WOOK (KR)
JUNG HYE-RAN (KR)
KIM JE-YOUNG (KR)
KIM IN-CHUL (KR)
International Classes:
H01M10/05; H01M4/02; H01M4/62; H01M4/64; H01M10/0566; H01M50/417; H01M50/42; H01M50/423
Foreign References:
| KR20050099903A | 2005-10-17 |
Other References:
See also references of EP 2768057A4
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
특허법인 필앤온지 (KR)
특허법인 필앤온지 (KR)
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Claims:
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