Facile Synthesis of Co3O4 Nanosheets Electrode with Ultrahigh Specific Capacitance for Electrochemical Supercapacitors. (10th November 2015) - Pan, Xuexue
Abstract: The Co3 O4 nanosheets electrode have been fabricated on Ni foam by a facile synthesis process including the electrodeposition of Co(OH)2 precursor followed by subsequent thermal transformation of precursor to Co3 O4 . The resulting Co3 O4 nanosheets electrode exhibits an ultrahigh specific capacitance of 6469 F g −1 at a current density of 5 mA cm −2, exceeding their theoretical value. Moreover, at density of 15 mA cm −2, the specific capacitance maintains 4127 F g −1, with 81.6% retention after 2000 charge-discharge cycles. The work confirms the promising application of Co3 O4 nanosheets as an efficient electrode for supercapacitors, and also offers a facile strategy to design and synthesis Co3 O4 electrode with enhanced specific capacitance.