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1. (EP3312906) LITHIUM-SULFUR BATTERY SEPARATION FILM HAVING COMPOSITE COATING LAYER INCLUDING POLYDOPAMINE, MANUFACTURING METHOD THEREFOR, AND LITHIUM-SULFUR BATTERY COMPRISING THE SAME

Office : European Patent Office
Application Number: 17744499 Application Date: 16.01.2017
Publication Number: 3312906 Publication Date: 25.04.2018
Publication Kind : B1
Designated States: AL, AT, BA, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, ME, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR
Prior PCT appl.: Application Number:KR2017000530 ; Publication Number: Click to see the data
IPC:
H01M 2/16
H01M 2/14
H01M 4/38
H01M 10/052
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
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
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
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
CPC:
H01M 10/052
H01M 2/145
H01M 2/162
H01M 2/1653
H01M 2/166
H01M 2/1686
H01M 4/136
H01M 4/38
H01M 4/382
H01M 4/405
H01M 10/0459
H01M 2004/027
H01M 2004/028
Y02T 10/7011
Applicants: LG CHEMICAL LTD
KOREA ADVANCED INST SCI & TECH
Inventors: LEE SEONG HO
LEE HAESHIN
KIM SUN JIN
YANG DOO KYUNG
KWON KI YOUNG
Priority Data: 20160010969 28.01.2016 KR
2017000530 16.01.2017 KR
Title: (DE) SEPARATORFILM MIT EINER KOMPOSITBESCHICHTUNG MIT POLYDOPAMIN FÜR EINE LITHIUM-SCHWEFEL-BATTERIE, VERFAHREN ZU DESSEN HERSTELLUNG UND LITHIUM-SCHWEFEL-BATTERIE DASSELBE UMFASSEND
(EN) LITHIUM-SULFUR BATTERY SEPARATION FILM HAVING COMPOSITE COATING LAYER INCLUDING POLYDOPAMINE, MANUFACTURING METHOD THEREFOR, AND LITHIUM-SULFUR BATTERY COMPRISING THE SAME
(FR) FILM DE SÉPARATION DE BATTERIE AU LITHIUM-SOUFRE COMPORTANT UNE COUCHE DE REVÊTEMENT COMPOSITE AVEC DE LA POLYDOPAMINE, SON PROCÉDÉ DE FABRICATION, ET BATTERIE AU LITHIUM-SOUFRE LE COMPRENANT
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.
(FR) La présente invention concerne un film de séparation de batterie au lithium-soufre comportant une couche de revêtement composite comprenant de la polydopamine, et un procédé de fabrication de celui-ci et, plus spécifiquement, une batterie au lithium-soufre pour supprimer l'élution de polysulfure de lithium par application d'une couche de revêtement composite comprenant de la polydopamine et un matériau conducteur sur une surface d'un film de séparation. La batterie au lithium-soufre selon la présente invention empêche l'élution et la diffusion par adsorption, à travers une structure poreuse de la polydopamine, du polysulfure de lithium élué depuis une cathode, et comprend en outre un site de réaction d'un matériau actif de cathode en apportant une conductivité électrique supplémentaire, de manière à améliorer les caractéristiques de capacité et de durée de vie de la batterie.
Also published as:
CN107925042US20180198156JP2018520490WO/2017/131377