电化学2019，Vol.25Issue(6)：764-772,9.DOI:10.13208/j.electrochem.180721
离子液体辅助条件下由稻壳合成超级电容器用多孔炭
Ionic Liquid Assisted Synthesis of Porous Carbons from Rice Husk for Supercapacitors
摘要
Abstract
It is still a challenge to prepare carbon materials with high specific surface area at low cost from renewable resources.Herein,the authors report an efficient approach to synthesize porous carbons (PCs) from rice husk with ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF6)) as a template and an activation agent.The as-made PCs featured the high specific surface area up to 1438 m2·g-1.As electrodes for supercapacitors,PCs showed a high specific capacitance of 256 F·g-1 at 0.05 A ·g-1 in 6 mol ·L-1 KOH aqueous electrolyte and a good rate performance of 211 F ·g-t at 10 A·g-1.All the PC electrodes exhibited good cycle stability.This work provides a new way for efficient synthesis of PCs from biomass using BMIMPF6 as a template and an assisted activation agent for high-performance supercapacitors.关键词
多孔炭/1-丁基-3-甲基咪唑六氟磷酸盐离子液体/稻壳/超级电容器Key words
porous carbon/BMIMPF6/rice husk/supercapacitor分类
化学化工引用本文复制引用
张韩方,魏风,孙健,荆梦莹,何孝军..离子液体辅助条件下由稻壳合成超级电容器用多孔炭[J].电化学,2019,25(6):764-772,9.基金项目
This work was supported by the National Natural Science Foundation of China (Nos.U1508201,UI 710116),the Provincial Innovative Group for Processing & Clean Utilization of Coal Resource. （Nos.U1508201,UI 710116）
