Synthesis of functionalized 3D hierarchical porous carbon for high-performance supercapacitors
Synthesis of functionalized 3D hierarchical porous carbon for high-performance supercapacitors
复制标题
用于高性能超级电容器的功能化3D分级多孔碳的合成
DOI：
10.1039/c3ee41638k
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发表时间：
2013-08-01
影响因子：
32.5
通讯作者：
Huang, Yunhui
中科院分区：
文献类型：
--
作者：
Qie, Long;Chen, Weimin;Huang, Yunhui
以聚吡咯微片为前驱体，KOH为活化剂，采用化学活化法制备了功能化三维多级多孔炭。所获得的THPC呈现出大的比表面积（2870 m2 g-1）、高水平的杂原子掺杂（N：7.7 wt%，O：12.4 wt%）、优异的电导率（5.6 S cm-1）和包含大孔框架、中孔壁和微孔纹理的分级多孔纳米结构。这种独特的特性使THPC成为电化学能量存储的理想电极材料。作为超级电容器的电极材料，THPC在水性和有机电解质中均表现出高电容、优异的倍率性能和长期稳定性。
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.