新型炭材料2011，Vol.26Issue(4)：313-319,7.DOI:10.1016/S1872-5805(11)60084-X
微波处理时间对电化学电容器用活性炭性能的影响
Effect of microwave-treatment time on the properties of activated carbons for electrochemical capacitors
摘要
Abstract
Activated carbons (ACs) made from petroleum coke by KOH activation were further treated by microwaves to investigate the effect of microwave-treatment time on the pore structure,the surface properties ( functional groups)and the electrochemical properties of the as-made ACs for electrochemical capacitors (ECs).Results show that the specific capacitance and the equivalent series resistance of microwave-treated ACs become smaller with a decrease in the Brunauer-Emmett-Teller surface area and the total pore volume (vt) of the treated ACs.Compared with the AC sample heated at 1073K for lh by a conventional heating method,the AC sample treated by microwaves at 700W for only 7min has a pore size distribution with a high ( meso- and macropore volume)/vt ratio and a high carbonyl content,and exhibits a high energy density and powder density as an electrode of ECs.This has clearly shown that the microwave-treatment is a simple and efficient atproach to obtain high-tperformance ACs for ECs.关键词
活性炭/微波处理/官能团/电化学电容器/能量密度Key words
Activated carbon/Microwave-treatment/Functional group/Electrochemical capacitor/Energy density分类
化学化工引用本文复制引用
何孝军,王婷,邱介山,张小勇,王晓婷,郑明东..微波处理时间对电化学电容器用活性炭性能的影响[J].新型炭材料,2011,26(4):313-319,7.基金项目
National Natural Science Foundation of China (50802002,20836002 and 20725619),Natural Science Foundation of Anhui Province of China(KJ2008A120).国家自然科学基金(50802002,20836002和20725619),安徽省科研项目(KJ2008A120) （50802002,20836002 and 20725619）
