Facile Synthesis of Co3O4 Nanosheets Electrode with Ultrahigh Specific Capacitance for Electrochemical Supercapacitors. (10th November 2015)

• Record Type: Journal Article
• Authors: Pan, Xuexue; Chen, Xinman; Li, Yan; Yu, Zenan
• Is Part Of: Electrochimica acta. Volume 182(2015)
• Page Start: 1101
• Page End: 1106
• Publication Date: 2015-11-10
• Subjects: Supercapacitors -- Electrodeposition -- Co3O4 nanosheets -- Specific capacitances; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.10.035
• Languages: English
• ISSNs: 0013-4686

Abstract

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.