林产化学与工业2011，Vol.31Issue(4)：63-68,6.
活化剂用量对竹基活性炭孔结构及电化学性能的影响
Effect of Activator Dosage on Pore Structure and Electrochemical Properties of Bamboo-based Activated Carbon
摘要
Abstract
Activated carbon with distinct pore structure used for electric double-layer capacitor (EDLC) was prepared using bamboo char as raw material and KOH as activator by chemical activation. The effect of mass ratio of KOH/ carbon on the structure and properties of the activated carbon were investigated by means of SEM, nitrogen adsorption, galvanostatic charging/discharging, cyclic voltammetry and impedance spectroscopy. The results show that the BET surface area, the totle pore volume, meso-porosity volume and micropore volume of activated carbons increase firstly and decrease afterward with increasing ratio of KOH/ carbon, while the average pore size increases all the time. The specific surface area, total pore volume and average pore size of bamboo-based activated carbon at the mass ratio of KOH/carbon 6 (BAC6) are 3 166. 5 m2/g, 2.023 cm3/g and 2.555 nm, respectively. Meanwhile BAC6 exhibites excellent specific capacitance over 172. 9 F/g at 1 mA/cm2 and the capacitance maintenance achieves 65. 6 % at 50 mA/cm2 in organic electrolyte. The high current charge/discharge performance is improved by a reasonable mesoporosity and somewhat wide pore size distribution.关键词
竹基活性炭/KOH用量/孔结构/电化学性能Key words
bamboo-based activated carbon/dosage of KOH/pore structure/electrochemical performance分类
化学化工引用本文复制引用
陈名柱,刘洪波,张东升,邓丛静,夏笑虹,何月德..活化剂用量对竹基活性炭孔结构及电化学性能的影响[J].林产化学与工业,2011,31(4):63-68,6.基金项目
“十一五”国家科技支撑计划资助(2006BAD19806) （2006BAD19806）
