EP 3888162 A1 20211006 - AQUEOUS ELECTROLYTE, REDOX FLOW BATTERY, AND USE OF SAME
Title (en)
AQUEOUS ELECTROLYTE, REDOX FLOW BATTERY, AND USE OF SAME
Title (de)
WÄSSRIGER ELEKTROLYT, REDOX-FLOW-BATTERIE UND DEREN VERWENDUNG
Title (fr)
ÉLECTROLYTE AQUEUX, BATTERIE A FLUX REDOX ET LEUR UTILISATION
Publication
Application
Priority
- DE 102018009393 A 20181129
- EP 2019000322 W 20191127
Abstract (en)
[origin: WO2020108786A1] The invention relates to an aqueous electrolyte solution having a temperature of at least 30 °C and containing a) an organic compound containing at least one redox-active group of formula (Ia) and hydrochloric acid and/or a salt selected from the group of the ammonium salts having inorganic or organic ions, the salts having tetrafluoroborate anions or the salts of trifluoromethanesulfonic acid, (formula Ia) and/or containing b) an organic compound containing at least one redox-active group of formula (Ib) and/or containing c) an organic compound containing at least one redox-active group of formula (Ic), wherein R1, R2, R3 and R4 mean alkyl or R1 and R2 and R3 and R4 each form a cycloaliphatic or heterocyclic moiety together with the common carbon atom, X means -O or -S, Y is -CH2-, -O-, -S-, -SO-, -SO2-, -NR5- or -N+R5R6- (Anm-)1/m, Q means -O-, -S-, -NH-, -NR6a -NR6aR6b +- (Anm-)1/m, -PR6a- or -SiR6aR6b-, or -Q- represents a covalent bond, R5, R6, R6a and R6b are monovalent organic moieties, An means an inorganic or organic anion having a valence of m, and m represents an integer between 1 and 4. The electrolyte can be used in redox flow batteries and is characterized by high stability of the redox-active compounds at elevated temperatures.
IPC 8 full level
H01M 4/38 (2006.01); H01M 4/42 (2006.01); H01M 4/60 (2006.01); H01M 8/18 (2006.01)
CPC (source: EP)
H01M 4/38 (2013.01); H01M 4/42 (2013.01); H01M 4/60 (2013.01); H01M 8/188 (2013.01); Y02E 60/10 (2013.01); Y02E 60/50 (2013.01)
Citation (search report)
See references of WO 2020108786A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020108786 A1 20200604; DE 102018009393 A1 20200604; EP 3888162 A1 20211006
DOCDB simple family (application)
EP 2019000322 W 20191127; DE 102018009393 A 20181129; EP 19817133 A 20191127