聚丙烯腈基活化炭纳米球电极材料制备及性能  

Preparation and performance of polyacrylonitrile based activated carbon nanosphere electrode materials

作　　者：张传祥[1] 郭丽玲[1] 王晓娇[1] 裴卫兵[1] 王力[1] 

机构地区：[1]河南理工大学,河南焦作454003

出　　处：《电源技术》2014年第10期1872-1874,共3页Chinese Journal of Power Sources

基　　金：国家自然科学基金项目(U1361119);河南省科技攻关项目(102102210207);河南理工大学博士基金(B2010-82);河南理工大学硕士学位论文创新基金(2011-M-03)

摘　　要：采用无皂乳液聚合法合成粒径为200～220 nm的聚丙烯腈纳米球,将其依次经过冷冻干燥、氧化稳定化、炭化活化处理,制备出超级电容器用炭纳米球电极材料。采用扫描电子显微镜、低温N2吸附及红外光谱仪对其表面形貌、孔结构及表面基团等进行表征,并对其电化学性能进行了测试。结果显示,在聚合物前驱体与KOH的质量比为1∶4,活化温度为800℃,活化时间为1h的条件下,所制备的活化炭纳米球电极材料比表面积达2 361 m2/g,总孔容达1。2cm3/g。其电极在3 mol/L的KOH电解液中的比电容达246F/g,且具有良好的充放电性能,漏电流仅为0。041 mA。Polyacrylonitrile （PAN） nanospheres latex with diameter size between 200-220 nm was synthesized by dispersion polymerization. After freeze drying, oxidation, stabilization and activated charcoal treatment, polyacrylonitrile carbon nanospheres electrode materials for supercapacitor was prepared. The surface morphology, pore size distribution and surface groups of the materials were characterized in turn by scanning electron microscopy, low temperature nitrogen adsorption and infrared spectrometer. Besides, the electrochemical performance was tested at last. The results show that carbon nanospheres electrode materials whose specific surface area is 2 361 m2/g and total pore volume is 1.2 cm3/g can be prepared under the condition of that the ratio of polymer precursor to KOH is 1： 4, activation temperature is 800 ~Cand activation time is 1 hour. In the 3 mol/L KOH electrolyte, the specific capacitance of this electrode material was 246 F/g, and the leakage current was only 0.041 mA.

关 键 词：聚丙烯腈 炭纳米球 超级电容器 电化学性能 

分 类 号：TM53[电气工程—电器]