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High Performance Asymmetric Supercapacitors Using Electrospun Copper Oxide Nanowires Anode

Rajan, Jose and Izan Izwan, Misnon and Baiju, Vidyadharan and Jamil, Ismail and M. M., Yusoff (2015) High Performance Asymmetric Supercapacitors Using Electrospun Copper Oxide Nanowires Anode. Journal of Alloys and Compounds, 633 (5). pp. 22-30. ISSN 0925-8388 (print), 1873-4669 (online)

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Abstract

We have fabricated, for the first time, an asymmetric supercapacitor (ASC) employing pseudocapacitive copper oxide (CuO) as anode and electrochemical double layer capacitive commercial activated carbon (AC) as cathode. The CuO is in the form of nanowires of diameter ∼30–50 nm developed using an aqueous polymeric solution based electrospinning process. The ASC showed larger voltage window (V ∼ 1.6 V) and specific capacitance (CS ∼ 83 Fg−1) than a control symmetric electrochemical double layer capacitor (EDLC) (V ∼ 1.4 V; CS ∼ 33 Fg−1) fabricated using the AC. The ASC delivered specific energy densities (ES) of 29.5, 23.5, 19.2 and 16.4 W h kg−1 at specific power densities (PS) 800, 1500, 4000 and 8400 W kg−1, respectively. The performance of ASC is much superior to the control EDLC, which delivered ES of 11, 10 and 8.8 W h kg−1 at PS 800, 1600 and 3900 W kg−1, respectively. Owing to the larger abundance of copper in the earth’s crust and promising charge storage properties achieved herewith, the present ASC could be developed as a commercial electrical energy storage device.

Item Type: Article
Subjects: Q Science > Q Science (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Q Science > QD Chemistry
Q Science > QC Physics
Faculty/Division: Faculty of Industrial Sciences And Technology
Depositing User: Prof. Dr. Jose Rajan
Date Deposited: 16 Feb 2015 08:17
Last Modified: 27 Jul 2018 08:19
URI: http://umpir.ump.edu.my/id/eprint/8594
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