Output and capacity can be scaled separately. Capacity is determined by the size of the tanks, while output is determined by the quantity of energy converters.
During the reduction process the electrolytes gain electrons, while during oxidation they lose electrons. Both chemical reactions have to occur separately from one another in the anode and cathode spaces of the energy converter. The stored chemical energy is converted into electricity as a result of a redox reaction on the surfaces of both electrodes. Conversely, electricity is added and the redox reaction is reversed during the charging process.
During the charging and discharging processes, the electrolytes – posolyte and negolyte – are pumped continuously through the stack’s cells, hence the term “flow”. The term “redox” is derived from the chemical reactions taking place in the energy converter stack.