HIGH ENERGY DENSITY REDOX FLOW DEVICE
First Claim
1. A redox flow energy storage device, comprising:
- a positive electrode current collector, a negative electrode current collector, and an ion-permeable membrane separating said positive and negative current collectors;
a positive electrode disposed between said positive electrode current collector and said ion-permeable membrane;
said positive electrode current collector and said ion-permeable membrane defining a positive electroactive zone accommodating said positive electrode;
a negative electrode disposed between said negative electrode current collector and said ion-permeable membrane;
said negative electrode current collector and said ion-permeable membrane defining a negative electroactive zone accommodating said negative electrode;
wherein at least one of said positive and negative electrode comprises a flowable semi-solid or condensed liquid ion-storing redox composition which is capable of taking up or releasing said ions during operation of the cell.
3 Assignments
0 Petitions
Accused Products
Abstract
Redox flow devices are described in which at least one of the positive electrode or negative electrode-active materials is a semi-solid or is a condensed ion-storing electroactive material, and in which at least one of the electrode-active materials is transported to and from an assembly at which the electrochemical reaction occurs, producing electrical energy. The electronic conductivity of the semi-solid is increased by the addition of conductive particle to suspensions and the surface modification of the solid in semi-solids: coating the solid with a more electron conductive coating material to increase the power of the device. High energy density and high power redox flow devices are disclosed.
-
Citations
49 Claims
-
1. A redox flow energy storage device, comprising:
-
a positive electrode current collector, a negative electrode current collector, and an ion-permeable membrane separating said positive and negative current collectors; a positive electrode disposed between said positive electrode current collector and said ion-permeable membrane;
said positive electrode current collector and said ion-permeable membrane defining a positive electroactive zone accommodating said positive electrode;a negative electrode disposed between said negative electrode current collector and said ion-permeable membrane;
said negative electrode current collector and said ion-permeable membrane defining a negative electroactive zone accommodating said negative electrode;wherein at least one of said positive and negative electrode comprises a flowable semi-solid or condensed liquid ion-storing redox composition which is capable of taking up or releasing said ions during operation of the cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
-
Specification