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Figure 4. The electrochemical performance of PEC-500||graphite dual carbon DIBs. (a) Charge-discharge curves at 1 C. Inset is the corresponding dQ/dV curve. (b) In-situ XRD patterns of the graphite cathode in dual carbon DIBs. (c) Rate performance and (d) corresponding discharge curves. (e) Cycling performance at 10 C. (f) Photo illustration of pouch cells. (g) The long cycling performance at 5 C.