Hierarchical porous carbon with network morphology derived from natural leaf for superior aqueous symmetrical supercapacitors
Hierarchical porous carbon with network morphology derived from natural leaf for superior aqueous symmetrical supercapacitors
复制标题
具有源自天然叶子的网络形态的分级多孔碳，用于优异的水性对称超级电容器
DOI：
10.1016/j.electacta.2017.11.092
复制
发表时间：
2017-12-20
影响因子：
6.6
通讯作者：
Liang, Yeru
中科院分区：
文献类型：
--
作者：
Huang, Jianyu;Chen, Lidong;Liang, Yeru
Development of efficient, low-cost and high-performance carbon materials as the electrodes is of significance for supercapacitors. Here we report a new class of hierarchical porous carbon with a three-dimensional network morphology of interconnected nanoparticle units prepared by using natural Indicalamus leaves and polytetrafluoroethylene as carbon precursor and silica-in-situ-remover, respectively. This protocol allows for successful post-treatment-free synthesis of biomass-based hierarchical porous carbon with specific surface area as high as 1801 m(2)/g without any extra activation process. Accordingly, when used as the electrodes of aqueous symmetrical supercapacitor, the as-prepared carbon material demonstrates superior capacitive behaviors, including high capacitances of 326 and 211 F/g in 1.0-V and 1.8-V supercapacitors, respectively, high energy density of 23.7 Wh/kg at power density of 224.5 W/kg, and excellent cycling stability. With these extremely attractive capacitive properties, this class of hierarchical porous carbon outperforms many typical state-of-the-art carbonaceous electrodes. (C) 2017 Elsevier Ltd. All rights reserved.
