酚醛泡沫NaOH化学活化制备超级电容器用活性炭.pdfVIP

维普资讯 2007年第 4期 炭 素 总第 132期 CARBON ·23· 文章编号：1001—8948(2007)04一OO23—05 酚醛泡沫NaOH化学活化制备超级电容器用活性炭 张翠，王成扬 ，姚国富，王文燕，赵朔 (天津大学化工学院 绿色合成与转化教育部重点实验室 天津 300072) 摘要：以酚醛泡沫碎屑为原料，采用NaOH活化法制备比表面积为1 750m。·g 的高比表面积活性炭，采用 该材料作为电板材料，组装成超级电容器，并对它进行了恒电流充放电实验、循环伏安实验和交流阻抗等实 验，结果表明，在炭化温度为800 C，碱炭比为2，活化温度为700℃时，制备的活性炭作电板材料组装的电容 器的比容量达266．1F／g，具有良好的充放电性能和循环性能。 关键词：双电层电容器；高比表面积活性炭；电化学性能；酚醛泡沫；氢氧化钠 中图分类号： TQ424．1 9 文献标识码： A THE PREPARATIoN oF THE ACTIVED CARBoN FRoM FENoLIC FoAM BY NaOH—ACTIVATION FOR ELECTRIC DoUBLE—LAYER CAPACIToR Zhang Cui，Wang Cheng—yang，Yao Guo—fu，Wang Wen—yan，Zhao Shuo (Key laboratory for Green chemical Technology of state Education Ministry，School of chemical EngineeringTechnology，Tianjin University，Tianjin 300072，China) Abstract：The activated carbon with high specific surface area of 1 750m。·g-1was prepared from Fenolic Foam by NaOH--activation，which can be used as electrode materials for electric double——layer capacitor． Its electrochemical performance was determined by means of DC charge／discharge，cycIic vohammetry，and AC impedance analysis．Results showed that the specific capacitance of HSSAAC could reach 266．1 F／g by controlling suitable technology conditions：carbonization temperature was 700‘C，ratio of NaOH to carbon was 2，activation temperature was 700℃．The EDLC with the activated carbon as electrode materials has good charge／discharge properties and recycle stability． Key words：electric double—layer capacitor；high specific surface actived carbon；electrochemeical proper— ties；Fenolic Foam；NaOH 的超级电容器一双电层电容器(Electric Double 0 前言 Layer Capacitor)也 叫功