石墨质多孔炭在不同电解液中的电化学性能研究

Electrochemical performance of a porous graphitic carbon-based supercapacitor in three different electrolytes

以中间相炭微球为原料,NaOH和FeCl_3分别作为活化剂和催化剂,一步活化催化法制备了一种石墨质多孔炭。将该石墨质多孔炭作为超级电容器的电极材料,研究了其在1 M LiPF_6/EC∶DEC(v/v_(=1)∶1)、1 M Et_4 NBF_4/PC(v/v_(=1)∶1)和1M[BMIM]BF_4/AN(v/v_(=1∶)1)三种不同电解液中的电化学性能。研究表明,该石墨质多孔炭在三种电解液中均表现出优异的电化学行为,在电解液Et_4NBF_4/PC中性能最优,是一种理想的电容型材料。

A porous graphitic carbon （PGC） was prepared by the one-step activation and graphitization of mesocarbon microbeadsusing NaOH and FeO3 as the activation reagent and graphitization catalyst,respectively. All supercapacitors constructed from the PGC using 1 M LiPF6 /EC 颐 DEC （v/v = 1）,1 M Et4 NBF4 /PC and 1 M [ BMIM] BF4 /AN as the electrolytes show good electro-chemical properties, with the optimum electrolyte being Et4NBF4 /PC.