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Title: Fabrication of a mesoporous Co(OH)2/ITO nanowire composite electrode and its application in supercapacitors
Authors: Dam, Duc Tai
Wang, Xin
Lee, Jong-Min
Issue Date: 2012
Source: Dam, D. T., Wang, X., & Lee, J.-M. (2012). Fabrication of a mesoporous Co(OH)2/ITO nanowire composite electrode and its application in supercapacitors. RSC Advances, 2(28), 10512-10518.
Series/Report no.: RSC advances
Abstract: A novel mesoporous α-Co(OH)2/ITO NWs heterostructure has been successfully synthesized via a new method of combining chemical vapor deposition (CVD) on a titanium substrate and electrodeposition through a hexagonal lyotropic liquid crystalline (LLC) phase for electrochemical energy storage application. Electrochemical measurements demonstrate the improved ionic conductivity of an electrode and enhanced supercapacitive behavior, as compared to a mesoporous cobalt hydroxide film on a titanium current collector without indium tin oxide (ITO) NWs as “electron highways”. Galvanostatic charge–discharge measurements in 1 M KOH solution prove that the electrode of the as-prepared heterostructure possesses excellent electrochemical capacitance, in the potential range from −0.1 V to 0.5 V with a maximum specific capacitance of 1128 F g−1 at a discharge current density of 1 A g−1. The unique mesoporous α-Co(OH)2/ITO NWs heterostructure provides a high capacitance retention ratio at high discharge current densities and long-term electrochemical stability in an alkaline solution.
ISSN: 2046-2069
DOI: 10.1039/c2ra21747c
Rights: © 2012 The Royal Society of Chemistry.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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