CVD-grown polypyrrole nanofilms on highly mesoporous structure MnO2 for high performance asymmetric supercapacitors
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- 作者：Ni Wanga ; Peng Zhaoa ; Kun Liangb ; Mengqi Yaoa ; Yang Yangb ; Yang.Yang@ucf.edu" class="auth_mail" title="E-mail the corresponding author ; Wencheng Hua ; huwc@uestc.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：High-porosity MnO2 ; PPy nanofilms ; Chemical vapor deposition ; Asymmetric supercapacitor ; High energy density
- 刊名：Chemical Engineering Journal
- 出版年：2017
- 出版时间：1 January 2017
- 年：2017
- 卷：307
- 期：Complete
- 页码：105-112
- 全文大小：2486 K
文摘
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Mesoporous MnO2 with a specific surface area of 523 m2 g−1 is prepared.
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PPy nanofilm is CVD-deposited on the surface of mesoporous MnO2.
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The as-prepared composite maintains the micrographs and pore/channel structure.
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The sample shows a high specific capacitance of 320 F g−1 and a long cyclic stability.
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An assembled ASC exhibits a high energy density of 38.6 Wh kg−1 at 0.5 A g−1.