Back to Search Start Over

Long-life electrochemical supercapacitor based on a novel hierarchically carbon foam templated carbon nanotube electrode

Authors :
Heguang Liu
Qiang Zhuang
Alei Dang
Xudong Chen
Tiehu Li
Hao Li
Shengzhao Zhang
Chuanyin Xiong
Tingkai Zhao
Yudong Shang
Source :
Composites Part B: Engineering. 141:250-257
Publication Year :
2018
Publisher :
Elsevier BV, 2018.

Abstract

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.

Details

ISSN :
13598368
Volume :
141
Database :
OpenAIRE
Journal :
Composites Part B: Engineering
Accession number :
edsair.doi...........99342c353730a5f73c4cfa8c6f13e9f1