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. 2015 Apr 21;5:9854. doi: 10.1038/srep09854

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Cyclic voltammograms of symmetrical supercapacitors with electrodes of electrodeposited (a,b) PAN-CNT in 1.0 mol L⁻¹ HCl (deposition charge: 3.0 C, voltage scan rate: 5 mV s⁻¹), (d) PPY-CNT (solid line, 2.8 C, 5 mV s⁻¹) and PEDOT-CNT (dashed line, 3.0 C, 10 mV s⁻¹) in 0.5 mol L⁻¹ KCl. The PAN-CNT electrodes were fresh in (a) and aged under open circuit for 4 hours in (b). (c) Electrode potential of the positive electrode simultaneously recorded with the first cycle CV in (b). Insets in (a): Photographs of the PAN-CNT electrode (showing the electro-deposited PAN-CNT coating on a 6 mm diameter graphite disc) and the tube-cell supercapacitor.