Facile Synthesis Of Co3O4 Nanosheets Electrode With Ultrahigh Specific Capacitance For Electrochemical Supercapacitors

Keywords

Co O nanosheets 3 4; Electrodeposition; Specific capacitances; Supercapacitors

Abstract

The Co3O4 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 Co3O4. The resulting Co3O4 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 Co3O4 nanosheets as an efficient electrode for supercapacitors, and also offers a facile strategy to design and synthesis Co3O4 electrode with enhanced specific capacitance.

Publication Date

11-10-2015

Publication Title

Electrochimica Acta

Volume

182

Number of Pages

1101-1106

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.electacta.2015.10.035

Socpus ID

84945187273 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84945187273

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