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Issue 26, 2018
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Designed synthesis of SiC nanowire-derived carbon with dual-scale nanostructures for supercapacitor applications

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Abstract

The preparation of one-dimensional carbon materials with complex dual-scale nanostructures for supercapacitor applications still remains a challenge. Herein we report a simple strategy for electrosynthesis of silicon carbide nanowire (SiC NW)-derived carbon with dual-scale nanostructures for high performance supercapacitors. This method is highlighted by using solid oxide membrane technology to directly convert powdered silicon dioxide/carbon precursors into SiC NWs, and then the synthesized SiC NWs are further transformed into mesoporous silicon carbide-derived carbon nanowires (SiC-CDC NWs) via a subsequent in situ molten salt electrochemical etching process. Benefitting from their dual-scale nanostructures, these SiC-CDC NWs exhibit highly reversible specific capacitance of 260 F g−1 at 1 A g−1 and good cyclability (97.9% after 5000 cycles) in 6 M KOH aqueous solution without the need for doping the SiC-CDC NWs. It is suggested that this process is a promising general approach for synthesizing CDC materials with dual-scale nanostructures for energy storage applications.

Graphical abstract: Designed synthesis of SiC nanowire-derived carbon with dual-scale nanostructures for supercapacitor applications

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Article information


Submitted
28 Apr 2018
Accepted
04 Jun 2018
First published
05 Jun 2018

J. Mater. Chem. A, 2018,6, 12724-12732
Article type
Paper

Designed synthesis of SiC nanowire-derived carbon with dual-scale nanostructures for supercapacitor applications

X. Zou, L. Ji, H. Hsu, K. Zheng, Z. Pang and X. Lu, J. Mater. Chem. A, 2018, 6, 12724
DOI: 10.1039/C8TA03922D

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