期刊
COMPOSITES PART B-ENGINEERING
卷 141, 期 -, 页码 250-257出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2017.12.049
关键词
Electrode materials; Supercapacitor; Carbon nanotubes; Carbon foam; Specific capacitance
资金
- Natural Science Foundation of Shaanxi Province [2016JQ5108]
- Specialized Research Fund for Natural Science Foundation of China [51572221, 51672221]
- China Aeronautical Science Fund [2014ZF53074]
- Key Science and Technology Program of Shaanxi Province, China [2013K09-03, 2014K08-15]
In this work, a long-life and high-performance electrode material is successfully fabricated by the incorporation of carbon nanotube (CNT) with different length using chemical vapor deposition (CVD) on a hierarchically three dimensional (3D) carbon foam (CF), which is obtained from the mesophase pitch. The morphology, composition, and electrochemical performance of the as-prepared composites are characterized using the scanning electron microscope (SEM), Raman spectroscopy, X-ray diffraction (XRD) patterns, cyclic voltammetry, and galvanostatic charge/discharge cycling techniques. Characterizations suggest that this resultant CF/CNT-50 electrode material has a good cycling stability with capacitance retention of 96.5% even after 10000 cycles. Moreover, it shows a high mass capacitance of 227.5 F/g based on the resultant electrode materials, higher energy density of 28 Wh kg(-1 )and power density of 3700 W kg(-1) at a current density 2 A g(-1) and also excellent charge/discharge rate. These measured charge storage properties make the proposed hybrid materials excellent electrode material candidates for high performance supercapacitors.
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