Lithium-sulfur battery separation film having composite coating layer including polydopamine, manufacturing method therefor, and lithium-sulfur battery comprising same폴리도파민을 포함하는 복합 코팅층이 형성된 리튬-황 전지용 분리막, 이의 제조방법 및 이를 포함하는 리튬-황 전지

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The present invention relates to a separator for a lithium-sulfur battery having a composite coating layer including polydopamine, and a method for preparing the same, and in particular, to a lithium-sulfur battery suppressing lithium polysulfide elution by using a composite coating layer including polydopamine and a conductive material on one surface of a separator. In the lithium-sulfur battery according to the present invention, a porous structure of polydopamine adsorbs lithium polysulfide eluted from a positive electrode preventing elution and diffusion, and by providing additional electric conductivity, a reaction site of a positive electrode active material is provided, and therefore, battery capacity and life time properties are enhanced.
Assignee
KAIST, LG CHEMICAL LTD
Country
US (United States)
Application Date
2017-01-16
Application Number
15742426
Registration Date
2020-04-14
Registration Number
10,622,669
URI
http://hdl.handle.net/10203/275381
Appears in Collection
CH-Patent(특허)
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