Effect of heating rate on the electrochemical performance of MnO X @CNF nanocomposites as supercapacitor electrodes
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- 作者：Lin Shi (1)
Haiyong He (1)
Yan Fang (1)
Yuying Jia (1)
Bin Luo (1)
Linjie Zhi (1) - 关键词：Heating rate ; Electrospinning ; MnO X ; Carbon nanofibers ; Supercapacitor
- 刊名：Chinese Science Bulletin
- 出版年：2014
- 出版时间：June 2014
- 年：2014
- 卷：59
- 期：16
- 页码：1832-1837
- 全文大小：
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Haiyong He (1)
Yan Fang (1)
Yuying Jia (1)
Bin Luo (1)
Linjie Zhi (1)
1. National Center for Nanoscience and Technology, Beijing, 100190, China - ISSN：1861-9541
文摘
Carbon nanofibers (CNFs) and MnO X @CNF nanocomposites (MCNFs) are fabricated by electrospinning and investigated as free-standing electrodes for supercapacitor. This work presents the effect of heating rate during carbonization on the electrochemical behavior of the as-prepared MCNFs electrodes in 6?mol/L KOH electrolyte. Results show that the MCNFs electrodes carbonized by relatively slower heating rate exhibit higher specific capacitance. The electronic conductivity of the slow heated MCNFs electrodes is better than that of the fast heated electrodes due to the better crystallinity of the MnO X nanoparticles and the graphitic carbon layers forming on the surface of the Mn-loaded CNFs. These MCNFs electrodes demonstrate elevated rate capability and improved cycling performance without adding any polymer binder or electronic conductor.