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1. (US20180198156) LITHIUM-SULFUR BATTERY SEPARATION FILM HAVING COMPOSITE COATING LAYER INCLUDING POLYDOPAMINE, MANUFACTURING METHOD THEREFOR, AND LITHIUM-SULFUR BATTERY COMPRISING SAME

Office : United States of America
Application Number: 15742426 Application Date: 16.01.2017
Publication Number: 20180198156 Publication Date: 12.07.2018
Publication Kind : A1
Prior PCT appl.: Application Number:PCTKR2017000530 ; Publication Number: Click to see the data
IPC:
H01M 10/052
H01M 2/14
H01M 2/16
H01M 4/40
H01M 10/04
H01M 4/136
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10
Secondary cells; Manufacture thereof
05
Accumulators with non-aqueous electrolyte
052
Li-accumulators
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2
Constructional details, or processes of manufacture, of the non-active parts
14
Separators; Membranes; Diaphragms; Spacing elements
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2
Constructional details, or processes of manufacture, of the non-active parts
14
Separators; Membranes; Diaphragms; Spacing elements
16
characterised by the material
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
36
Selection of substances as active materials, active masses, active liquids
38
of elements or alloys
40
Alloys based on alkali metals
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10
Secondary cells; Manufacture thereof
04
Construction or manufacture in general
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
13
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
136
Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
CPC:
H01M 10/0459
H01M 10/052
H01M 2/145
H01M 2/1686
H01M 2004/027
H01M 4/136
H01M 4/405
Applicants: LG CHEM, LTD.
KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Inventors: Seong Ho LEE
Haeshin LEE
Sun Jin KIM
Doo Kyung YANG
Ki Young KWON
Priority Data: 10-2016-0010969 28.01.2016 KR
Title: (EN) LITHIUM-SULFUR BATTERY SEPARATION FILM HAVING COMPOSITE COATING LAYER INCLUDING POLYDOPAMINE, MANUFACTURING METHOD THEREFOR, AND LITHIUM-SULFUR BATTERY COMPRISING SAME
Abstract: front page image
(EN)

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.


Also published as:
EP3312906CN107925042JP2018520490WO/2017/131377