摘要
碳材料是应用于电化学电容器最普遍的电极材料之一,为了提高碳材料的电化学性能,使用硬模板开孔被证明是一种有效地方法。本研究以不同粒径的SiO_2和明胶为原料,用涂布器将溶液涂布于在玻璃板上,干燥后将膜刮下收集,经不同温度煅烧后,得到氮掺杂多孔碳材料。对其电化学性能进行研究,结果表明所得鳞片状碳材料的导电性良好,比电容值较高。在1M的H_2SO_4电解液中,当电流密度为0.2Ag~(-1)时,其比电容值可达279.8 Fg~(-1)。表明其在超级电容器方面具有良好的应用潜力。此外,该鳞片状碳材料还显示出良好的循环性能。
Carbon materials are common for electrochemical capacitors.In order to improve their electrochemical performance,using silica as a hard template has been verified as a promising approach.In this study,nitrogen-doped porous scaly carbon sheets was obtained by calcination from gelatin and different particle size of SiO_2 as precursor.Electrochemical measurements indicate that the resulting N-doped porous scaly carbon sheets reaches 279.8 F g~(-1)in 1 M H_2SO_4 at a current density of 0.2 A g~(-1).
引文
[1]Li-Feng Chen,Xu-Dong Zhang,Hai-Wei Liang,Acs nano,2012,8,7092.
[2]Lota,G.;Lota,K.;Frackowiak,E.Electrochem.Commun.2007,9,1828.