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| Preparation and Supercapacitive Performances of SiC-CDCs |
| Author Name | Affiliation | E-mail | | YU Yan-Yan | Wuhan University of Science and Technology, College of Chemistry and Chemical Engineering, Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, Wuhan 430081, China | | | GUAN Yun-Feng | Wuhan University of Science and Technology, College of Chemistry and Chemical Engineering, Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, Wuhan 430081, China | | | CONG Ye | Wuhan University of Science and Technology, College of Chemistry and Chemical Engineering, Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, Wuhan 430081, China | congye626@126.com | | YUAN Xiu-Lan | Wuhan University of Science and Technology, College of Chemistry and Chemical Engineering, Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, Wuhan 430081, China | | | LI Xuan-Ke | Wuhan University of Science and Technology, College of Chemistry and Chemical Engineering, Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, Wuhan 430081, China
Hunan University, College of Materials Science and Engineering, Changsha 410082, China | xkli8524@sina.com | | ZHANG Jiang | Wuhan University of Science and Technology, College of Chemistry and Chemical Engineering, Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials, Wuhan 430081, China | |
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| Abstract: Silicon carbide precursors were synthesized by pyrolysis of polycarbosilane (PCS) at higher temperature. Subsequently, silicon carbide-derived carbons (SiC-CDCs) were obtained via chlorination of the SiC precursors at 1 000℃. The microstructure and morphology of the SiC-CDCs were characterized by X-ray diffraction pattern (XRD), Raman spectra, Transmission electron microscope (TEM) and N2 adsorption-desorption method. The effects of pyrolysis temperature on the crystal phase, morphology, pore size and distribution of the SiC-CDCs were investigated and the electrochemical performances as the electrode of supercapacitors were evaluated. The results show that SiC-CDCs with larger specific surface areas and sub-nanometer pores can be successfully prepared by chlorination of SiC precursors. Meanwhile, the SiC-CDCs exhibit better specific capacitances and supercapacitive performances at different current densities. |
| Keywords: polycarbosilane pyrolysis chlorine etching silicon carbide-derived carbons pore structure supercapacitor |
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| YU Yan-Yan,GUAN Yun-Feng,CONG Ye,YUAN Xiu-Lan,LI Xuan-Ke,ZHANG Jiang.Preparation and Supercapacitive Performances of SiC-CDCs[J].Chinese Journal of Inorganic Chemistry,2017,33(5):853-859. |
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