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1. (WO2016058812) LITHIUM-SULPHUR ACCUMULATOR

Pub. No.:    WO/2016/058812    International Application No.:    PCT/EP2015/072203
Publication Date: Fri Apr 22 01:59:59 CEST 2016 International Filing Date: Tue Sep 29 01:59:59 CEST 2015
IPC: H01M 4/36
H01M 4/58
H01M 10/36
H01M 2/16
H01M 4/134
H01M 4/38
H01M 4/62
Applicants: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT
Inventors: LUX, Simon
OBERHUMER, Philipp
STIASZNY, Barbara
GENTSCHEV, Ann-Christin
REITER, Jakub
Title: LITHIUM-SULPHUR ACCUMULATOR
Abstract:
The invention relates to a lithium-sulphur accumulator (1) comprising an electrolyte (2) containing lithium-ions, an anode (3) and a cathode (4) containing sulphur. Said claimed lithium-sulphur accumulator also comprises a surface layer (5) which is arranged between the anode (3) and the cathode (4). Said lithium-sulphur accumulator (1) also comprises areas on the cathode side which comprise polysulfides. Said surface layer (5) of the lithium-sulphur accumulator comprises at least one graphene layer which is permeable to lithium ions and non-permeable to polysulfides.