重量分析
材料科学
电容
电容感应
电极
电解质
超级电容器
电容器
微型多孔材料
多孔性
碳纤维
储能
化学工程
纳米技术
电化学
复合材料
化学
电气工程
量子力学
复合数
物理
工程类
物理化学
功率(物理)
电压
有机化学
作者
Guanzhong Wang,De−Bin Ji,Hongjun Wu,Xinlong Ma
标识
DOI:10.1016/j.apt.2021.10.013
摘要
Porous carbon (PC) derived from the petroleum pitch via the template-guidance coupled with activation methodology, possesses hierarchical pore structure in view of micropore and mesopore. As the electrode material for electrochemical double-layer capacitor, PC electrode not only possesses the good adaptability to aqueous and organic electrolytes, but also delivers the superior capacitive behavior with respect to capacitance and rate capability over those of counterparts (activation-derived carbon and commercial activated carbon). Furthermore, relatively high values of gravimetric and areal capacitances (247F g−1 and 2470 mF cm−2) can be guaranteed simultaneously for PC electrode even at the commercial-level mass loading of 10 mg cm−2, demonstrating the good compatibility to gravimetric and areal capacitances. The satisfactory capacitive storage behavior of PC is ascribed to the synergistic effect of hierarchical pore structure and extraordinary structural integrity. Besides, this work also presents a high value-added utilization strategy to prepare the high-performance porous carbon-based electrode material for capacitive energy storage.
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