MnO_2氧化法制备高电容保持率PANI-Co_3O_4  

High capacitance retention PANI-Co_3O_4 synthesized by MnO_2 oxidation method

作　　者：王芳平[1] 李庆余[2] 秦庆东[1] 杨建红[1] 

机构地区：[1]中国铝业股份有限公司郑州研究院,河南郑州450041 [2]广西师范大学化学化工学院,广西桂林541004

出　　处：《电池》2012年第3期126-128,共3页Battery Bimonthly

摘　　要：以二氧化锰(MnO2)为氧化剂,通过化学原位聚合法将溶剂热法制备的四氧化三钴(Co3O4)与聚苯胺(PANI)复合,得到PANI-Co3O4复合材料。对产物进行SEM、XRD、循环伏安和恒流充放电测试。Co3O4为立方晶型,被大量纤维状的PANI包裹着。制备的PANI-Co3O4复合材料的比电容较高,循环性能良好。在电流密度为5 mA/cm2时,单电极比电容为287 F/g,第500次循环的比电容为271 F/g,电容保持率为94.4%。Cobaltosic oxide（CO3O4） was prepared by solvent-thermal method, then polyanihne（ PAN I）-CO3O4 composite was pre- pared by chemical in-situ polymerization using manganese dioxide（ MnO2 ） as oxidant. The product was analyzed by SEM, XRD, eyclie vohammetry and galvartostatie charge-discharge tests.CO3O4 was cubic crystal, covered with a large number of fibrous PANI. The prepared PANI-CO3O4 composite had high capacity and fine cycle performance. The specific capacitance of single elec- trode was 287 F/g when the current density was 5 mA/em2,the specific capacitance at the 500th cycle was 271 F/g,the capaci- tance retention rate was 94.4%.

关 键 词：聚苯胺(PANI)-四氧化三钴(Co3O4) 超级电容器 电化学性能 

分 类 号：TM53[电气工程—电器]