材料工程Issue(11)：14-19,6.
活化条件对酚醛基活性炭布结构及其电化学性能的影响
Influence of Activated Condition on the Pore Structure of Phenolic Resin Based Activated Carbon Cloth and the Electrochemical Performance of Supercapacitors
摘要
Abstract
Phenolic resin based activated carbon cloths(ACCs) were prepared by steam activation treat-ment, and were used as electrodes of supercapacitors. The pore structure and the electrochemical properties of the resultant ACCs were investigated by means of Nz adsorption, AC impedance and con-stant current discharge techniques. The relationship of pore structure and the activated conditions, as well as the relationship between the pore structure and electrochemical performance in 1M (CH_2CH_3)_3CH_3NBF_4/PC were discussed in details. Results showed that the BET surface area, aver-age pore width and mesoporous surface area dramatically increased with the increase of activation tem-perature and/or activation time. It was also found that the specific capacitance of ACCs increased with the increase of BET surface area, especially the specific capacitance of the sample activated under 950"C for 90rain reached 158F · g~(-1) at current density of 50mA · g~(-1). Besides, the capacitance reten-tion of ACCs at high current density increased with the increase of mesoporous surface area, of which the capacitance retention (C_(500)/C_(50)) of the sample with the largest mesoporous specific surface area reached 91.1%. IR drop reduced sharply in the pores less than 2nm with the increase of average pore width.关键词
活性炭布/水蒸气活化/孔结构/电化学性能Key words
phenolic resin based activated carbon cloth/ steam activation/ pore structure/ electrochemi-cal performance分类
化学化工引用本文复制引用
耿煜,宋燕,田永明,郭全贵,刘朗..活化条件对酚醛基活性炭布结构及其电化学性能的影响[J].材料工程,2009,(11):14-19,6.基金项目
国家863计划(2006AA11A166) （2006AA11A166）
国家自然科学基金(50602046)及山西省自然科学基金(2007011075) （50602046）
