S掺杂多孔炭材料的合成及其在超级电容器中的应用

The Synthesis of S-doped Porous Carbon Material and Its Application in Supercapacitors

开发了一种选择性去除原位产物,在造孔同时利用反应物中的杂原子实现对碳掺杂的方法,制备了S掺杂多孔炭材料.该材料具有粒子尺寸小、介孔/大孔比例合适、导电性和表面极性大、法拉第反应活性位点多等特点,因此具备在0.5 A·g^(-1)电流密度下具有443 F·g^(-1)高的比容量,以及在20 A·g^(-1)电流密度下和比容量为284 F·g^(-1)时的良好倍率性能.

This paper presents a selective extraction of in-situ product approach for preparing hierarchically porous S-doped carbon, in which pores creating and heteroatom doping are accomplished simultaneously. Owing to the small particle size and suitable mesopores and macropores ratio, high electronic conductivity and surface polarity as well as the active sites available for faradic reactions, the resultant S-doped carbon electrode shows a super specifc capacitance of 443 F·g-1 at 0.5 A·g-1 and a capacitance of 284 F·g-1 even at a high current density of 20 A·g-1.