High electroactivity of polyaniline in supercapacitors by using a hierarchically porous carbon monolith as a support
High electroactivity of polyaniline in supercapacitors by using a hierarchically porous carbon monolith as a support
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DOI：
10.1002/adfm.200700518
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发表时间：
2007-11-05
影响因子：
19
通讯作者：
Antonietti, Markus
中科院分区：
文献类型：
--
作者：
Fan, Li-Zhen;Hu, Yong-Sheng;Antonietti, Markus
以中间相沥青为前驱体，采用恒电位法在多级孔炭块（HPCM）上沉积苯胺，制备了高性能的聚苯胺电极。在功率密度为0.47 kW·kg-1、能量密度为300 W·h·kg-1的条件下，获得了高达2200 F·g-1（单位聚苯胺重量）的电容值。这种沉积在HPCM上的活性材料还具有高稳定性的优点。这些性质可以基本上归因于HPCM的骨架作用。该方法还具有拓扑结构的优点，该拓扑结构有利于高功率密度下的动力学，因此有助于提高离子电导率和功率密度。也不需要粘合剂，这不仅降低了制备成本，而且在稳定性和性能方面提供了优势。
A high-performance polyaniline electrode was prepared by potentiostatic deposition of aniline on a hierarchically porous carbon monolith (HPCM), which was carbonized from the mesophase pitch. A capacitance value as high as 2200 F g(-1) (per weight of polyaniline) is obtained at a power density of 0.47 kW kg(-1) and an energy density of 300 W h kg(-1). This active material deposited on HPCM also has the advantageous of high stability. These properties can be essentially attributed to the backbone role of HPCM. The method also has the advantage of a topology that is favorable for kinetics at high power densities, thus, contributing to the increase of ionic conductivity and power density. There is also no need for a binder, which not only lowers the preparation costs but also offers advantages in terms of stability and performance.