混合盐活化胖大海基多孔炭的制备及超级电容器电极材料性能

doi:10.11944/j.issn.1000-0518.2015.05.140300

摘要/Abstract

摘要：

利用浸泡后的胖大海为碳源, 氯化锌和氯化锂混合盐作为活化剂, 采用炭化胖大海(PC-1)、添加氯化锌(PC-2)或添加氯化锌/氯化锂(PC-3)的胖大海的方法制备了3种多孔碳材料, 并通过三电极体系测试电极材料的电化学性能。结果表明, 3种碳材料在电流密度为0.5 A/g的比电容分别为69、132和228 F/g; 当电流密度增加至10 A/g时, PC-3的比电容仍高达166 F/g, 具有良好的倍率性能。该实验表明, 通过氯化锌/氯化锂复合盐活化胖大海分级多孔碳可作为高性能超级电容器电极材料。

关键词: 多孔碳, 盐活化, 超级电容器

Abstract:

A series of porous carbons(PC-1, PC-2 and PC-3) with microporous and suitable mesoporous was successfully prepared by pyrolysis in the absence(PC-1) and existence of ZnCl₂(PC-2), or ZnCl₂/LiCl(PC-3) activators utilizing soaked scaphium scaphigerum as the precursor. The specific capacitance of PC-1, PC-2 and PC-3 electrodes at the current density of 0.5 A/g in three-electrode system is 69, 132 and 228 F/g, respectively. Moreover, a specific capacitance up to 166 F/g at the current density of 10 A/g indicates a good rate performance of PC-3. These desirable results reveal that the porous carbons prepared from scaphium scaphigerum by ZnCl₂/LiCl activation can be used as high performance electrode materials in supercapacitor.

Key words: porous carbon, salt activation, supercapacitor

中图分类号:

呼小洲, 王静, 唐靖. 混合盐活化胖大海基多孔炭的制备及超级电容器电极材料性能[J]. 应用化学, 2015, 32(5): 591-596.

HU Xiaozhou, WANG Jing, TANG Jing. Synthesis of Mixture Salt Activated Porous Carbon from Scaphium Scaphigerum and Its Performance as Super Capacitor Electrode Material[J]. Chinese Journal of Applied Chemistry, 2015, 32(5): 591-596.

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