Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/85302
Title: Supercapacitive performance of single phase CuO nanosheet arrays with ultra-long cycling stability
Authors: Shu, Xia
Wang, Yan
Cui, Jiewu
Xu, Guanqing
Zhang, Jianfang
Yang, Wanfen
Xiao, Mingfeng
Zheng, Hongmei
Qin, Yongqiang
Zhang, Yong
Chen, Zhong
Wu, Yucheng
Keywords: Ammonium Molybdate
CuO Nanofilm
Engineering::Materials
Issue Date: 2018
Source: Shu, X., Wang, Y., Cui, J., Xu, G., Zhang, J., Yang, W., . . . Wu, Y. (2018). Supercapacitive performance of single phase CuO nanosheet arrays with ultra-long cycling stability. Journal of Alloys and Compounds, 753, 731-739. doi:10.1016/j.jallcom.2018.03.267
Series/Report no.: Journal of Alloys and Compounds
Abstract: Copper oxide nanofilms can be fabricated on Cu foam by a simple electrochemical anodization process. However, it is difficult to obtain single-phase nanofilms that consist only of Cu2O or CuO. In this work, we present a modified anodization process that includes (NH4)6Mo7O24·4H2O in the electrolyte solution, and prepare single-phase CuO nanofilms grown directly on Cu foam. The surface morphologies of the CuO nanofilms are greatly dependent on the concentration of (NH4)6Mo7O24·4H2O included in the electrolyte solution during the anodization process, and accordingly present nanodots, nanoflakes, nanosheets, and/or nanobelts. The synthesis mechanism for CuO nanofilms is discussed in detail. The as-fabricated single-phase CuO nanofilms can be directly employed as electrodes that exhibit good supercapacitive performance, with an areal capacitance greater than 600 mF cm-2 at a current density of 1 mA cm−2 in a 2 M KOH aqueous solution. Moreover, the single-phase CuO nanofilm electrodes also demonstrate excellent long term cycling stability with about 94% retention of the initial areal capacitance after 10,000 charge/discharge cycles. The results demonstrate that the CuO nanofilms prepared on Cu foam by our modified anodization process are promising electrode materials for high-performance flexible supercapacitors.
URI: https://hdl.handle.net/10356/85302
http://hdl.handle.net/10220/49194
ISSN: 0925-8388
DOI: http://dx.doi.org/10.1016/j.jallcom.2018.03.267
Rights: © 2018 Elsevier B.V. All rights reserved.
metadata.item.grantfulltext: none
metadata.item.fulltext: No Fulltext
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