Electrochemical performance of a porous graphitic carbon-based supercapacitor in three different electrolytes
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摘要: 以中间相炭微球为原料，NaOH和FeCl3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 LiPF6/EC：DEC （v/v=1：1）、1 M Et4NBF4/PC （v/v=1：1）和1M[BMIM]BF4/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Et4NBF4/PC中性能最优，是一种理想的电容型材料。Abstract: A porous graphitic carbon (PGC) was prepared by the one-step activation and graphitization of mesocarbon microbeads using NaOH and FeCl3 as the activation reagent and graphitization catalyst, respectively. All supercapacitors constructed from the PGC using 1 M LiPF6/EC:DEC (v/v=1), 1 M Et4NBF4/PC and 1 M[BMIM]BF4/AN as the electrolytes show good electrochemical properties, with the optimum electrolyte being Et4NBF4/PC.
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Key words:
- Porous graphitic carbon /
- Supercapacitor /
- Catalytic graphitization /
- Electrolyte
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