超级电容器
纳米孔
金属有机骨架
材料科学
电极
电容
电化学
金属
多孔性
微型多孔材料
比表面积
碳纤维
电解质
纳米技术
化学工程
石墨烯
化学
有机化学
冶金
吸附
工程类
物理化学
作者
Bo Liu,Hiroshi Shioyama,Hai‐Long Jiang,Xinbo Zhang,Qiang Xu
出处
期刊:Carbon
[Elsevier]
日期:2010-02-01
卷期号:48 (2): 456-463
被引量:616
标识
DOI:10.1016/j.carbon.2009.09.061
摘要
Five nanoporous carbons (NPCs) were prepared by polymerizing and then carbonizing carbon precursor of furfuryl alcohol accommodated in a porous metal–organic framework (MOF-5, [Zn4O(bdc)3], bdc = 1,4-benzenedicarboxylate) template. The Brunauer–Emmett–Teller (BET) surface areas for five NPC samples obtained by carbonizing at the temperatures from 530 to 1000 °C fall into the range from 1140 to 3040 m2 g−1 and the dependence of BET surface areas on carbonization temperatures shows a “V” shape. All the five NPC samples have a pore size distribution centered at about 3.9 nm. As electrode materials for supercapacitor, the NPC samples obtained at the temperatures higher than 600 °C display the ideal capacitor behaviors and give rise to almost constant specific capacitance (above 100 F g−1 at 5 mV s−1) at various sweep rates, which is associated with their mesoporous characteristics. However, the NPC sample with the highest BET surface area (3040 m2 g−1) obtained by carbonizing at 530 °C gives a unusually low capacitance (12 F g−1 at 5 mV s−1), which may be attributed to the poor conductivity of the carbon material due to the low carbonization temperature.
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