標題: Synthesis of Petal-Like Carbon Nanocapsule@MnO2 Core-Shell Particles and Their Application in Supercapacitors
作者: Lee, Ting-Ting
Hong, Jing-Ru
Lin, Wei-Chen
Hu, Chi-Chang
Wu, Pu-Wei
Li, Yuan-Yao
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 2014
摘要: Carbon nanocapsule (CNC)@MnO2 core-shell particles are prepared with a reaction of KMnO4 with CNC at 90 degrees C. Birnessite-type MnO2 nanoflakes are grown on CNC seeds, resulting in CNC@MnO2 particles with a petal-like structure. The electrochemical characteristics of the prepared materials show that the highest specific capacitance (163 Fg(-1)) was obtained with a scan rate of 2 mVs(-1) in 1 M Na2SO4. In addition, the synthesized material has superior cycling stability. The capacitance retains 97.8% of its initial value after 5000 cycles with a scan rate of 100 mVs(-1). (C) 2014 The Electrochemical Society. All rights reserved.
URI: http://hdl.handle.net/11536/25103
http://dx.doi.org/10.1149/2.0061410jes
ISSN: 0013-4651
DOI: 10.1149/2.0061410jes
期刊: JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume: 161
Issue: 10
起始頁: H598
結束頁: H605
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