Biosorption-Directed Integration of Hierarchical CoO/C Composite with Nickel Foam for High-performance Supercapacitor
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摘要Attributed to the low cost, chemical stability and high theoretical specific capacitance, cobalt monoxide (COO) is a superior material for electrodes in supercapacitor. Here, we propose the nickel foam supported Chlorella-inspired CoO/C hierarchical structure for the making of a binder-free electrode for supercapacitor application. The fabrication process takes advantage of the Chlorella's biosorption. The fabricated structure shows excellent electrochemical properties with a specific capacitance of 648 F/g (at current density of 0.5 A/g), and good cycling stability (no diminution over similar to 8000 cycles at the current density of 3 A/g). The asymmetric supercapacitor device is assembled by employing CoO/C composite as the positive electrode and activated carbon as the negative electrode. Such device delivers a high energy density of 30.9 Wh/kg at 398 W/kg, and a maximum power density of 8000 W/kg. This work demonstrates a low-cost bio-inspired method of producing CoO/C composite, which can be used as an active electrode for electrochemical supercapacitors. (C) 2017 Elsevier Ltd. All rights reserved.
著者Ning Zhang, Xiaohui Yan, Jia Li, Jianmin Ma, Dickon H.L. Ng
期刊名稱Electrochimica Acta
出版年份2017
月份2
日期1
卷號226
出版社PERGAMON-ELSEVIER SCIENCE LTD
頁次132 - 139
國際標準期刊號0013-4686
電子國際標準期刊號1873-3859
語言英式英語
關鍵詞Biosorption, Cobalt monoxide, Supercapacitor, Electrochemical properties
Web of Science 學科類別Electrochemistry;Electrochemistry

上次更新時間 2021-17-01 於 01:40