Phenazine-based compounds
AssigneeCMBlu Energy AG
InventorsPeter Geigle, Jan Hartwig, Eduard Baal, Isabel Scheibel, Evgeny Larionov, Olga Ekkert, Doris Neumann, Christian Schneider
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Abstract
The present invention relates to novel phenazine-based compounds and compositions comprising the same and their use as redox flow battery electrolytes.
Claims37
A redox flow battery, comprising a first half cell comprising an electrolyte solution comprising a composition comprising at least one or at least two substituted phenazine compounds of Formula (I)(a) or Formula (I)(b)
- wherein:
- R1 is positioned at ring position 7 or 8 and is —NHRx, —NRxRy, or —N(H)C(═O)Rx, wherein Rx and Ry independently represent C1-C4 alkyl optionally substituted with —CO2H, ═O, —SO3H, —OH, substituted or unsubstituted aryl, or —NH2;
- R2 is —H, —OH, —SO3H, alkyl, or —CO2H;
- R3 is —H, —OH, —NHRx, —NRxRy, or —N(H)C(═O)Rx
- m is selected from any number of 0, 1, 2, and 3;
- p is selected from any number of 0, 1, 2, 3, and 4;
- or a salt thereof;
- and
- a solvent, and, optionally, at least one further substituted low molecular weight aromatic redox active compound other than the substituted phenazine compounds of Formula (I)(a) or Formula (I)(b);
- and
- a second half-cell comprising an electrolyte solution comprising a redox active species.
A substituted phenazine compound of Formula (I) (a) or Formula (I) (b)
- wherein:
- R1 is positioned at ring position 7 or 8 and is —NHRx, —NRxRy, or —N(H)C(═O)Rx,
- wherein Rx and Ry independently represent C1-C4 alkyl optionally substituted with —CO2H, ═O, —SO3H, —OH, substituted or unsubstituted aryl, or —NH2;
- R2 is —H, —OH, —SO3H, alkyl, or —CO2H;
- R3 is —H, —OH, —NHRx, —NRxRy, or —N(H)C(═O)Rx
- m is selected from any number of 0, 1, 2, and 3;
- p is selected from any number of 0, 1, 2, 3, and 4;
- or a salt thereof;
- and
- wherein R2 is —SO3H, and R2 is positioned at ring position 2 and/or 3.
A substituted phenazine compound of Formula (I) (a) or Formula (I) (b)
- wherein:
- R1 is positioned at ring position 7 or 8 and is —NHRx, —NRxRy, or —N(H)C(═O)Rx,
- wherein Rx and Ry independently represent C1-C4 alkyl optionally substituted with —CO2H, ═O, —SO3H, —OH, substituted or unsubstituted aryl, or —NH2;
- R2 is —H, —OH, —SO3H, alkyl, or —CO2H;
- R3 is —H, —OH, —NHRx, —NRxRy, or —N(H)C(═O)Rx
- m is selected from any number of 0, 1, 2, and 3;
- p is selected from any number of 0, 1, 2, 3, and 4;
- or a salt thereof;
- and
- wherein R3 is selected from —OH and positioned at ring position 7 or 8.
A substituted phenazine compound of Formula (I) (a) or Formula (I) (b)
- wherein:
- R1 is positioned at ring position 7 or 8 and is —NHRx, —NRxRy, or —N(H)C(═O)Rx,
- wherein Rx and Ry independently represent C1-C4 alkyl optionally substituted with —CO2H, ═O, —SO3H, —OH, substituted or unsubstituted aryl, or —NH2;
- R2 is —H, —OH, —SO3H, alkyl, or —CO2H;
- R3 is —H,—OH, —NHRx, —NRxRy, or —N(H)C(═O)Rx
- m is selected from any number of 0, 1, 2, and 3;
- p is selected from any number of 0, 1, 2, 3, and 4;
- or a salt thereof;
- and
- wherein p is 2, and R2 is selected from —SO3H and methyl.
Dependencies are inferred from the claim text.