Facile Synthesis of Poly(p-phenylenediamine)-Derived Three-Dimensional Porous Nitrogen-Doped Carbon Networks for High Performance Supercapacitors
Facile Synthesis of Poly(p-phenylenediamine)-Derived Three-Dimensional Porous Nitrogen-Doped Carbon Networks for High Performance Supercapacitors
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DOI：
10.1021/jp508684t
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发表时间：
2014-12
影响因子：
3.7
通讯作者：
Hui Peng;Guofu Ma;K. Sun;Jingjing Mu;Zhe Zhang;Z. Lei
中科院分区：
文献类型：
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作者：
Hui Peng;Guofu Ma;K. Sun;Jingjing Mu;Zhe Zhang;Z. Lei
介绍了一种简单的氧化聚合-催化炭化相结合的方法，以聚对苯二胺为原料，直接制备了高含氮量(约8.4wt%)的三维多孔掺氮碳网络。在合成过程中，FeCl3不仅作为对苯二胺单体氧化聚合的氧化剂，而且还作为碳化催化剂促进多孔碳网络的形成。在700℃下制备的3DN-CNW具有高比表面积的多孔性骨架，作为超级电容器的电极材料表现出优异的性能。当电流密度为0.5Ag-1时，N-CNW电极在6M KOH水溶液中的最大比电容为304Fg-1，即使在20Ag-1的大电流密度下仍保持着226Fg-1的高值。此外，组装的N-CNW对称超级电容器在功率密度为15.8WH·kg~(-1)的情况下表现出相当高的能量密度.
We introduce a facile integrated oxidation polymerization and catalytic carbonization method to prepare three-dimensional porous nitrogen-doped carbon networks (3D N-CNWs) with high nitrogen content (about 8.4 wt %) directly from poly(p-phenylenediamine). In the synthesis process, the FeCl3 serves not only as an oxidant for oxidative polymerization of p-phenylenediamine monomers but also as the carbonization catalyst to promote porous carbon network formation. The 3D N-CNWs prepared at 700 °C exhibit an interconnected porous framework with high specific surface area and show remarkable performance as an electrode material for supercapacitors. The maximum specific capacitance of 304 F g–1 at a current density of 0.5 A g–1, which retains the high values of 226 F g–1 even at a high current density of 20 A g–1, is obtained for the N-CNW electrode in 6 M KOH aqueous solution. Moreover, the as-assembled N-CNW symmetric supercapacitor exhibits a considerably high energy density of 15.8 Wh kg–1 at a power density...