Template-free synthesis of ultrathin mesoporous NiO nanosheets and their application in supercapacitors

A facile template-free synthetic strategy was proposed to prepare ultrathin mesoporous NiO nanosheets with a thickness of ca. 10 nm: precipitating hydroxides followed by calcinating process. Electrochemical data demonstrated that the ultrathin mesoporous NiO delivered a specific capacitance (SC) of 168 F g−1 at 1 A g−1, and a SC degradation of ca. 8% after 1000 continuous cycling at 4 A g−1, which indicated that the ultrathin mesoporous NiO nanosheets were good candidates for supercapacitors application.