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1. WO2022092701 - LITHIUM-SULFUR SECONDARY BATTERY COMPRISING CYCLIC CARBONATE-CONTAINING ELECTROLYTE

Publication Number WO/2022/092701
Publication Date 05.05.2022
International Application No. PCT/KR2021/014791
International Filing Date 21.10.2021
IPC
H01M 10/0567 2010.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
056characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
0564the electrolyte being constituted of organic materials only
0566Liquid materials
0567characterised by the additives
H01M 10/0569 2010.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
056characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
0564the electrolyte being constituted of organic materials only
0566Liquid materials
0569characterised by the solvents
H01M 4/36 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
36Selection of substances as active materials, active masses, active liquids
H01M 4/38 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
36Selection of substances as active materials, active masses, active liquids
38of elements or alloys
H01M 4/62 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01M 10/052 2010.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
Applicants
  • 주식회사 엘지에너지솔루션 LG ENERGY SOLUTION, LTD. [KR]/[KR]
Inventors
  • 박인태 PARK, Intae
  • 김용휘 KIM, Yonghwi
  • 박창훈 PARK, Changhun
  • 이창훈 LEE, Changhoon
Agents
  • 김성호 KIM, Sung Ho
Priority Data
10-2020-014233829.10.2020KR
10-2020-014235129.10.2020KR
Publication Language Korean (ko)
Filing Language Korean (KO)
Designated States
Title
(EN) LITHIUM-SULFUR SECONDARY BATTERY COMPRISING CYCLIC CARBONATE-CONTAINING ELECTROLYTE
(FR) BATTERIE SECONDAIRE AU LITHIUM-SOUFRE COMPRENANT UN ÉLECTROLYTE CONTENANT DU CARBONATE CYCLIQUE
(KO) 고리형 카보네이트를 함유하는 전해질을 포함하는 리튬-황 이차전지
Abstract
(EN) Provided is a lithium-sulfur secondary battery comprising a cathode, an anode, a separator, and an electrolyte. The electrolyte contains a cyclic carbonate wherein the cyclic carbonate is fluoroethylene carbonate, vinylene carbonate, or a combination thereof. The cyclic carbonate is contained in an amount of 0 ppm to 1,000 ppm (both exclusive) on the basis of the total weight of the electrolyte. The lithium-sulfur secondary battery exhibits improved cycle performance as the electrolyte contains a specific cyclic carbonate.
(FR) L'invention concerne une batterie secondaire au lithium-soufre comprenant une cathode, une anode, un séparateur et un électrolyte. L'électrolyte contient un carbonate cyclique, le carbonate cyclique étant du carbonate de fluoroéthylène, du carbonate de vinylène ou une combinaison de ceux-ci. Le carbonate cyclique est contenu dans une quantité de 0 ppm à 1 000 ppm (tous les deux exclus) sur la base du poids total de l'électrolyte. La batterie secondaire au lithium-soufre présente une performance de cycle améliorée du fait que l'électrolyte contient un carbonate cyclique spécifique.
(KO) 양극, 음극, 분리막 및 전해질을 포함하는 리튬-황 이차전지가 제공된다. 상기 전해질은 고리형 카보네이트를 함유하고, 상기 고리형 카보네이트는 플루오로에틸렌 카보네이트, 비닐렌 카보네이트 또는 이의 조합이다. 상기 고리형 카보네이트는 전해질 총 중량을 기준으로 0ppm 초과 1,000ppm 미만이 전해질에 함유된다. 상기 리튬-황 이차전지는 전해질에 특정 고리형 카보네이트를 함유함으로써, 리튬-황 이차전지의 사이클 성능이 개선된다.
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