The decoupled power and energy allows completely independent scaling.
The power output is determined by the number or size of the stacks, and the energy capacity is determined by the amount of electrolytes stored in a separate tank.
VRFB energy storage has negligible degradation regardless of the depth and number of cycles operated. It can cycle 20,000+ with over more than 20 years of operation retaining its original energy capacity.
Due to this long life-span, it can dramatically reduce the total cost of ownership.
VRFB is inherently a stable chemistry based on aqueous electrolyte which is risk-free of fire hazard from thermal runaway.
It is also very sustainable due to it’s indefinite reusable and recyclable electrolytes.
A single-cell comprises of several components to create a positive and negative side . The electrolytes flow through each side of the electrode separated by the membrane. Several single-cells may be stacked together to create a single unit stack which decides the power capacity.
Energy is stored in the water-based vanadium electrolyte through an electro-chemical process in the stack. The electrolyte shows four different valence states, V5+ and V4+(positive), V2+ and V3+(negative). The colors of the electrolyte represents the actual charged state of the electrolyte. The electrolyte shows no change in composition during the repeated cycling of charge and discharge and does not require supplements in the electrolyte.