Carbon nitride template-directed fabrication of nitrogen-rich porous graphene-like carbon for high performance supercapacitors
Carbon nitride template-directed fabrication of nitrogen-rich porous graphene-like carbon for high performance supercapacitors
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用于高性能超级电容器的氮化碳模板定向制备富氮多孔类石墨烯碳
DOI:
10.1016/j.carbon.2018.01.032
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发表时间:
2018-04
期刊:
影响因子:
10.9
通讯作者:
Yongfeng Li
中科院分区:
文献类型:
--
作者:
Wang Yang;Liqiang Hou;Xiuwen Xu;Zihui Li;Xinlong Ma;Fan Yang;Yongfeng Li
Facile yet rationally designed strategy for advanced electrode material synthesis is pivotal for energy storage. Herein, we report an protocol for g-C3N4template-directed in-situ fabricating nitrogen-rich porous graphene-like carbon sheets (NPGCs) by using plasma-enhanced chemical vapor deposition followed with high-temperature pyrolysis process, which totally avoids the postsynthetic template-removal. The resultant NPGCs integrate a range of intriguing features including highly conductive interconnected structure (693 S m−1), abundant mesoporous with ultrahigh pore volume (4.35 cm3g−1), large specific surface area (1277 m2g−1), high N doping (8.75 wt%), and good wettability. As supercapacitor electrode, the NPGCs exhibit a quite encouraging specific capacitance of 261 F g−1at 1 A g−1, excellent rate capability (189 F g−1even at 100 A g−1), and outstanding cycle performance (97% capacitance retention at 10 A g−1after 20000 cycles), which outperforms most carbon-based materials reported to date. Moreover, the assembled supercapacitors deliver a high power density of 28.4 kW kg−1with a energy density of 6.53 Wh kg−1at 100 A g−1. Our work is expected to open up new avenues for developing efficient nitrogen-doped porous carbon materials in a facile and viable way.
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