Ultrathin NiO nanoflakes electrode materials for supercapacitors

Ultrathin NiO nanoflakes were synthesized through a facile and environmentally hydrothermal method. Electrochemical tests showed that ultrathin NiO nanoflakes as the electrode materials exhibited a high areal capacitance and excellent long cycle-life stability after 6000 cycles, which demonstrating high-performance capacitive behavior and could be used as excellent electrode material for electrochemical energy storage.