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Figure 2: Electrochemical performance of pentacene derivatives. Discharge/charge profiles of (a) PEN, (b) PTQ, (c) DHTAP, and (d) TAPQ in the voltage range of 1.3–4.0 V at a current density of 50 mA g−1. (e) Differential capacity (dQ/dV) plots of TAPQ. (f) CV curves of TAPQ measured in DMF solutions containing TBAP as electrolytes. (g) CV curves of TAPQ in coin battery.