Ionic-liquid-assisted one-pot synthesis of Cu<sub>2</sub>O nanoparticles/multi-walled carbon nanotube nanocomposite for high-performance asymmetric supercapacitors

<p>A one-pot room-temperature-ionic-liquid-assisted sputtering approach is designed to synthesize Cu<sub>2</sub>O/MWCNTs nanocomposite with high capacitance and long cycling life due to synergistic effects of oxygen-deficient Cu<sub>2</sub>O and conductive MWCNTs.</p>