林产化学与工业2018，Vol.38Issue(2)：29-38,10.DOI:10.3969/j.issn.0253-2417.2018.02.004
水蒸气活化制备超级电容器木质活性炭的研究
Preparation of Woody Activated Carbon for Supercapacitor Electrode by Steam Activation
摘要
Abstract
In order to prepare activated carbons for supercapacitor electrode with low price and good performance, traditional steam activation method was employed to prepare activated carbons from masson pine wood. The elemental analyzer and the nitrogen adsorption/desorption were employed to analyze the element contents and pore structure of the activated carbons. The electrochemical performance of the activated carbon electrodes was examined by the methods including cyclic voltammetry, galvanostatic charge-discharge cycles and electrochemical impedance spectroscopy using 1-ethyl-3-methyl imidazole tetrafluoroborate/acetonitrile (EMIMBF4/AN) as electrolytes. The effects of activation temperature and time on the electrochemical performance of activated carbon were investigated. The results showed that the specific copacitance of activated carbon increased first and then decreased with the increment of activation temperature and activation time. The activated carbon prepared at carbonization temperature 900 ℃ and activation temperature 900 ℃ for 1 h reached the maximum of the specific capacitance. Its specific capacitance reached 155 F/g with a sweep speed of 5 mV/s and remaind 105 F/g at 100 mV/s,and the energy density in organic electrolyte was as high as 33.6(W·h)/kg.After 5 000 cycles,specific capacitance was remain at value of 89 %.关键词
水蒸气活化/木质活性炭/有机电解液/超级电容器Key words
steam activation/woody activated carbon/organic electrolyte/supercapacitor分类
化学化工引用本文复制引用
杜颜珍,申保收,左宋林,夏海岸..水蒸气活化制备超级电容器木质活性炭的研究[J].林产化学与工业,2018,38(2):29-38,10.基金项目
国家重点研发计划项目(2017YFD0601006) （2017YFD0601006）
教育部博士点博导基金(20133204110007) （20133204110007）
