標題: | Electrochemical Properties of CNT/MnO2 Hybrid Nanostructure with Low-Temperature Hydrothermal Synthesis as High-Performance Supercapacitor |
作者: | Li, Wei-Shuo Chang, Man-Lin Chuang, Kai-Chi Li, Yi-Shao Luo, Jun-Dao Cheng, Huang-Chung 電子工程學系及電子研究所 Department of Electronics Engineering and Institute of Electronics |
公開日期: | 25-六月-2019 |
摘要: | Multi-walled carbon nanotubes (CNTs)/manganese dioxide (MnO2) nanocomposites were fabricated using the low-temperature hydrothermal method with no oxidant addition as hybrid supercapacitors. The electrochemical behaviors of CNTs-MnO2 were systematically investigated by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy. The specific capacitance was promoted from 30.3 F g(-1) to 405.15 F g(-1) with a hydrothermal reaction time of 5 min. Compared to pristine CNTs, the improvement ratio of the specific capacitance of a hydrothermal reaction time of 5 min was 13.4 times under the condition of a 1 M Na2SO4 electrolyte at a scan rate of 100 mVs(-1). The CNTs-MnO2 electrode also demonstrated better cycling stability after 1000 cycles. Moreover, this study demonstrates that CNTs-MnO2 electrodes have a low-temperature facile synthesis, high specific capacitance, and good cycle stability. Thus, these good supercapacitors electrodes are promising for the development in energy-storage devices in the future. (c) 2019 The Electrochemical Society. |
URI: | http://dx.doi.org/10.1149/2.1551910jes http://hdl.handle.net/11536/152219 |
ISSN: | 0013-4651 |
DOI: | 10.1149/2.1551910jes |
期刊: | JOURNAL OF THE ELECTROCHEMICAL SOCIETY |
Volume: | 166 |
Issue: | 10 |
起始頁: | 0 |
結束頁: | 0 |
顯示於類別: | 期刊論文 |