材料科学
超级电容器
杂原子
微型多孔材料
碳纤维
化学工程
重量分析
电容
电化学
沸石
聚合
纳米技术
电极
复合材料
有机化学
聚合物
催化作用
复合数
戒指(化学)
化学
物理化学
工程类
作者
Conchi O. Ania,Volodymyr Khomenko,Encarnación Raymundo‐Piñero,J.B. Parra,François Béguin
标识
DOI:10.1002/adfm.200600961
摘要
Abstract A novel microporous templated carbon material doped with nitrogen is synthesized by using a two‐step nanocasting process using acrylonitrile (AN) and propylene as precursors, and Na–Y zeolite as a scaffold. Liquid‐phase impregnation and in situ polymerization of the nitrogenated precursor inside the nanochannels of the inorganic scaffold, followed by gas‐phase impregnation with propylene, enables pore‐size control and functionality tuning of the resulting carbon material. The material thereby obtained has a narrow pore‐size distribution (PSD), within the micropore range, and a large amount of heteroatoms (i.e., oxygen and nitrogen). In addition, the carbon material inherits the ordered structure of the inorganic host. Such features simultaneously present in the carbon result in it being ideal for use as an electrode in a supercapacitor. Although presenting a moderately developed specific surface area ( S BET = 1680 m 2 g –1 ), the templated carbon material displays a large gravimetric capacitance (340 F g –1 ) in aqueous media because of the combined electrochemical activity of the heteroatoms and the accessible porosity. This material can operate at 1.2 V in an aqueous medium with good cycleability—‐beyond 10 000 cycles—and is extremely promising for use in the development of high‐energy‐density supercapacitors.
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