Sandwich-like nitrogen-enriched porous carbon/graphene composites as electrodes for aqueous symmetric supercapacitors with high energy density
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- 作者：Qinxing Xiea ; qxxie@yahoo.com" class="auth_mail" title="E-mail the corresponding author ; Shuwen Zhoua ; Anran Zhenga ; Chao Xiea ; Cuiyu Yina ; Shihua Wub ; Yufeng Zhanga ; Peng Zhaob
- 关键词：Supercapacitor ; Graphene ; Porous carbon ; Polyacrylonitrile ; Composite
- 刊名：Electrochimica Acta
- 出版年：2016
- 出版时间：20 January 2016
- 年：2016
- 卷：189
- 期：Complete
- 页码：22-31
- 全文大小：3340 K
文摘
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Novel sandwich-like porous carbon/graphene composites were prepared.
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A high specific capacitance of 381.6 F g−1 was achieved in 6 M KOH electrolyte.
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The distinct effects of two types of graphene on structure and performance were investigated.
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The supercapacitors deliver both high-energy density and high-power density.