Porous MoO2 nanowires as stable and high-rate negative electrodes for electrochemical capacitors.

Free-standing porous MoO2 nanowires with extraordinary capacitive performance are developed as high-performance electrodes for electrochemical capacitors. The as-obtained MoO2 electrode exhibits a remarkable capacitance of 424.4 mF cm-2 with excellent electrochemical durability (no capacitance decay after 10 000 cycles at various scan rates).