Electrochemical fabrication of carbon nanotube/polyaniline hydrogel film for all-solid-state flexible supercapacitor with high areal capacitance

CNT film prepared via a floating catalyst CVD method was activated by an electrochemical strategy for better PANI growth. Both this CNT/PANI hydrogel film electrode and a flexible symmetric supercapacitor based on this electrode material exhibited high areal capacitance.