Issue 26, 2018

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

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

Supplementary files

Article information

Article type
Paper
Submitted
28 Apr 2018
Accepted
04 Jun 2018
First published
05 Jun 2018

J. Mater. Chem. A, 2018,6, 12724-12732

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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