Electrochemical Deposition of Porous VOx and MnO2 Nanowires on Stainless Steel Mesh for Flexible Supercapacitors
Abstract:Porous vanadium oxide (VOx) and MnO2 nanowires were synthesized by an electrochemical deposition method using stainless steel mesh as substrate. The as-prepared porous VOx and MnO2 nanowire films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and Raman spectroscopy. The cyclic voltammetry (CV) results show that the MnO2 nanowire film shows specific capacitance of 195, 170, 158, and 91 F g–1 at scan rates of 5, 10, 20, and 50 mV s–1, respectively. The porous VO x film displays specific capacitance of 152, 124, 99, and 76 F g– 1at scan rates of 5, 10, 20, and 50 mV s –1, respectively. The capacitance losses for the MnO2 nanowire film and the porous VOx film are only 5% and 10% for 1000 cycles, respectively.
Document Type: Research Article
Publication date: September 1, 2010
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