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(a) Linear sweep voltammogram of PPC binder [25]; (b) rate performance of different cathodes at various current densities (between 0.1, 0.2, 0.5, 1.0, and 2.0 C); (c) the long-term cycle performance of different cathodes at 1 C; (d) the1st/50th/100th/200th charge/discharge curves of different cathodes at 0.5 C; (e) impedance changes in different electrodes before and after 100 cycles at 1 C.
