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Nanomaterials 2018, 8(7), 487; https://doi.org/10.3390/nano8070487

Porous α-Fe2O3@C Nanowire Arrays as Flexible Supercapacitors Electrode Materials with Excellent Electrochemical Performances

1
School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
2
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, China
*
Author to whom correspondence should be addressed.
Received: 16 May 2018 / Revised: 23 June 2018 / Accepted: 25 June 2018 / Published: 1 July 2018
(This article belongs to the Special Issue Smart Nanogenerators)
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Abstract

Porous α-Fe2O3 nanowire arrays coated with a layer of carbon shell have been prepared by a simple hydrothermal route. The as-synthesized products show an excellent electrochemical performance with high specific capacitance and good cycling life after 9000 cycles. A solid state asymmetric supercapacitor (ASC) with a 2 V operation voltage window has been assembled by porous α-Fe2O3/C nanowire arrays as the anode materials, and MnO2 nanosheets as the cathode materials, which gives rise to a maximum energy density of 30.625 Wh kg−1and a maximum power density of 5000 W kg−1 with an excellent cycling performance of 82% retention after 10,000 cycles. View Full-Text
Keywords: α-Fe2O3/C; asymmetrical supercapacitor; long cycling life; energy storage device α-Fe2O3/C; asymmetrical supercapacitor; long cycling life; energy storage device
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Dong, Y.; Xing, L.; Chen, K.; Wu, X. Porous α-Fe2O3@C Nanowire Arrays as Flexible Supercapacitors Electrode Materials with Excellent Electrochemical Performances. Nanomaterials 2018, 8, 487.

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