Electrochemical synthesis of polyaniline–Ni–Co hybrid structures on titanium substrates for ultrahigh-capacitance supercapacitor electrodes

. EIS reveals reduced solution and charge-transfer resistances and near-ideal capacitive behavior for the hybrid electrode. This simple, room temperature, all electrochemical strategy provides a scalable route to high-areal-capacitance Ti-based electrodes for miniaturized supercapacitors, which are suitable for powering or buffering low-power wearable and microelectronic devices.