超级电容器
材料科学
杂原子
介孔材料
微型多孔材料
聚吡咯
化学工程
电解质
比表面积
电容
碳纤维
多孔性
水溶液
电化学
纳米技术
电极
有机化学
复合材料
化学
复合数
催化作用
工程类
物理化学
戒指(化学)
作者
Long Qie,Weimin Chen,Henghui Xu,Xiang Xiong,Yan Jiang,Feng Zou,Xianluo Hu,Ying Xin,Zhaoliang Zhang,Yunhui Huang
摘要
Functionalized three-dimensional hierarchical porous carbon (THPC) is prepared via a facile modified chemical activation route with polypyrrole microsheets as precursor and KOH as activating agent. The as-obtained THPC presents a large specific surface area (2870 m2 g−1), high-level heteroatom doping (N: 7.7 wt%, O: 12.4 wt%), excellent electrical conductivity (5.6 S cm−1), and hierarchical porous nano-architecture containing macroporous frameworks, mesoporous walls and microporous textures. Such unique features make the THPC an ideal electrode material for electrochemical energy storage. As the electrode material for a supercapacitor, the THPC exhibits a high capacitance, excellent rate performance and long-term stability in both aqueous and organic electrolytes.
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