电子元件与材料2009，Vol.28Issue(11)：39-42,4.DOI:10.3969/j.issn.1001-2028.2009.11.012
双电层电容器中单/双面涂覆电极的电化学性能比较
Comparison on electrochemical performance of single-face and double-face covered electrodes for electric double layer capacitor
摘要
Abstract
One-step synthesis of microporous activated carbon (AC) was introduced by microwave heating petroleum coke with KOH as activation agent. Electrochemical performance of single-face and double-face covered AC electrodes for electric double layer capacitor were studied by cyclic voltammetry and galvanostatic charge-discharge. The results show that the adsorption capacity of AC is 247.8 mg·g~(-1) for methylene blue. The results of N_2 adsorption-desorption show that the specific surface area and the micropore volume of AC reaches 1 037 m~2·g~(-1) and 0.54 m~3·g~(-1), respectively. The specific capacitance and the maintenance of specific capacitance as well as energy density of double-face covered AC electrodes are 227.3 F·g~(-1), 96.6% and 97.4%, respectively, which are bigger than those of single-face covered AC electrodes. On the contrary, the equivalent series resistance of the former is only 0.42 Ω, which is smaller than that of single-face covered AC electrodes.关键词
双电层电容器/电极/能量密度/电化学性能Key words
electric double layer capacitor/ electrode/ energy density/ electrochemical performance分类
信息技术与安全科学引用本文复制引用
何孝军,龙素安,王婷,耿叶静,郑明东..双电层电容器中单/双面涂覆电极的电化学性能比较[J].电子元件与材料,2009,28(11):39-42,4.基金项目
国家自然科学基金资助项目(No.50802002),安徽省自然科学基金资助项目(No.2008JQ1026ZD, KJ2008A120) （No.50802002）
