MnO2/聚苯胺复合材料的制备和性能  

Preparation and Properties of MnO_2 /polyaniline Composite

作　　者：张启卫[1] 彭小红[1] 黄行康[2] 肖旺钏[1] 王仁章[1] 杨勇[2] 

机构地区：[1]三明学院化学与生物工程系,三明365004 [2]厦门大学化学系,厦门361005

出　　处：《无机化学学报》2008年第4期600-604,共5页Chinese Journal of Inorganic Chemistry

基　　金：福建省高新技术重点项目(No2005H071);三明市重点科技项目(No2005-G-9)

摘　　要：以δ-MnO2为前驱体,通过酸处理后引入苯胺并聚合,得到了MnO2/聚苯胺复合材料。经XRD分析表明,在本研究条件下,经酸处理后的δ-MnO2晶型由δ型转变为α型,而在随后的苯胺引入及其聚合步骤中MnO2晶型均不再改变。以200mA·g-1的电流进行恒电流充放电性能测试,结果显示,MnO2/聚苯胺复合材料的充放电容量达到160.2mA·g-1,与酸处理后得到的α-MnO2接近(160.9mA·g-1),但比前驱体δ-MnO2高(125.8mA·g-1);更为重要的是,MnO2/聚苯胺复合材料与前驱体及酸处理得到的样品相比,其循环性能得到了较大的提高。MnO2/polyaniline composite was prepared by polymerization of aniline in α-MnO2 from the acidtreating precursor of δ-MnO2. XRD results showed that during acid treatment the precursor of δ-MnO2 was transformed into α-MnO2, and this in α-MnO2 polymorph kept unchanged in the subsequent processes, as intercalation and polymerization of aniline. Comparison of charge-discharge performances among the precursor, its acid-treated form and the final composite, showed that at current density of 200 mA·g^-1 the discharge capacity of the composite was 160.2 mA·g^-1 which is close to that of the acid-treated material （160.9 mA·g^-1） but higher than that of the precursor （125.8 mA·g^-1）. More important, the MnO2/polyaniline composite showed a much better cyclic performance than the precursor and its acid-treated form.

关 键 词：MNO2 聚苯胺 复合材料 制备 电化学性能 

分 类 号：O614.111[理学—无机化学]