超级电容器
电容
材料科学
多孔性
热解
碳纤维
化学工程
电容感应
制作
生物量(生态学)
体积热力学
比表面积
复合材料
电极
化学
有机化学
复合数
计算机科学
量子力学
病理
物理化学
工程类
地质学
催化作用
物理
操作系统
海洋学
替代医学
医学
作者
Bei Liu,Hongbiao Chen,Yong Gao,Huaming Li
标识
DOI:10.1016/j.electacta.2015.12.081
摘要
In this work, we present a facile approach to synthesize porous carbon materials via a two-step fabrication process using eulaliopsis binata (EB) as the biomass precursor. The dried EB is directly subjected to pyrolysis at a moderate temperature (500 °C) followed by KOH activation at high temperature (850 °C), giving EB-derived porous carbons. By optimizing the KOH/carbon mass ratio and activation temperature to balance the porosity and capacitance, the resulting porous carbon shows an extremely high specific surface area (2273 m2 g−1) and pore volume (1.19 m3 g−1) as well as excellent capacitive performance with a specific capacitance of 373 F g−1 at 0.5 A g−1. Such low-cost, high-performance, biomass-derived electrode material is potentially useful for high-power supercapacitors.
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