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(a) A 2 kWh cube system constructed at UEP containing 72 prismatic cells filled with hydrogel electrolyte. (b) Comparison of a single prismatic cell, a module containing 8 cells connected in parallel and the 2 kWh system in Phase A and Phase B cycling regimes. (c) Comparison of the voltage curves of each module and the overall system at different stages—the first 9 h discharge at C/10 in Phase A, a representative Phase A cycle and a representative Phase B cycle.
