Fabrication and characterization of ultra light SiC whiskers decorated by RuO2 nanoparticles as hybrid supercapacitors

Junhong Chen; Yujie Zhang; Xinmei Hou; Lei Su; Huili Fan; Kuo-Chih Chou

doi:10.1039/C5RA27291B

Fabrication and characterization of ultra light SiC whiskers decorated by RuO₂ nanoparticles as hybrid supercapacitors

Junhong Chen,*^a Yujie Zhang,^b Xinmei Hou,*^c Lei Su,

^b Huili Fan^b and Kuo-Chih Chou^c

Author affiliations

* Corresponding authors

^a School of Materials Engineering, University of Science and Technology Beijing, Beijing 100083, China
E-mail: cjh@ustb.edu.cn

^b School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China

^c State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
E-mail: houxinmei@ustb.edu.cn

Abstract

Ultra light SiC whiskers decorated by RuO₂ nanoparticles fabricated combining carbon thermal reduction and a hydrothermal route were investigated as novel hybrid supercapacitors with improved performance. The morphology and microstructure of the composite indicate that RuO₂ nanoparticles are dispersed on the surface of SiC whiskers. The electrochemical behavior of the hybrid electrode systematically measured in 1.0 M H₂SO₄ demonstrates that SiC whiskers can considerably improve the supercapacitance properties of RuO₂. The specific capacitance of RuO₂ nanoparticles in the composite can be obtained as high as 1454.8 F g⁻¹ with a mass ratio of RuO₂/modified SiC whiskers of 2 : 3. Moreover, the hybrid electrode displays a longer cycle life with a better capacitance retention (∼93.6%) than that of pure RuO₂ after 2000 CV cycles.

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https://doi.org/10.1039/C5RA27291B

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Paper

Submitted

21 Dec 2015

Accepted

06 Feb 2016

First published

09 Feb 2016

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RSC Adv., 2016,6, 19626-19631

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Fabrication and characterization of ultra light SiC whiskers decorated by RuO₂ nanoparticles as hybrid supercapacitors

J. Chen, Y. Zhang, X. Hou, L. Su, H. Fan and K. Chou, RSC Adv., 2016, 6, 19626 DOI: 10.1039/C5RA27291B

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Fabrication and characterization of ultra light SiC whiskers decorated by RuO₂ nanoparticles as hybrid supercapacitors

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Fabrication and characterization of ultra light SiC whiskers decorated by RuO₂ nanoparticles as hybrid supercapacitors

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