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(a) CV profiles of PPBT/SWNT@Si MP anodes in the potential window of 0.01 to 1 V versus Li/Li+ at a scan rate of 0.1 mV s–1. (b) Charge/discharge voltage profiles of Si MP and PPBT/SWNT@Si MP anodes at a current density of 0.5 A g–1. (c) Rate capabilities of Si MP and PPBT/SWNT@Si MP anode cells measured at various current densities from 0.5 to 8 A g–1. (d) Cycle performances of Si MP and PPBT/SWNT@Si MP anodes at a current density of 2 A g–1 for 300 cycles.
