高性能导电聚苯胺/活化石墨烯复合物微球的构筑及电化学性能研究

项目名称： 高性能导电聚苯胺/活化石墨烯复合物微球的构筑及电化学性能研究

项目编号： No.21274043

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 关士友

作者单位： 华东理工大学

项目金额： 82万元

中文摘要： 高能量密度与高功率密度不能兼得是化学储能材料与器件研究的世界性难题。本申请针对理论比容量高、价格低廉的导电聚苯胺电极材料的瓶颈问题，结合导电聚苯胺的导电和储能机理，从基本科学问题入手，通过引入活化石墨烯和孔结构参数调控，构筑具有高电子导电性和高离子导电性的聚苯胺/活化石墨烯复合物微球电极材料。目的在于最大限度地发挥聚苯胺的理论容量，弥补聚苯胺电极材料在充/放电起点和终点电子导电性差的缺陷，实现高能量密度、高功率密度，并提高电极材料的循环稳定性。本研究通过在导电聚苯胺微球中构筑活化石墨烯导电网络以提高聚苯胺的导电性；通过共混不同粒径的单分散复合微球来调控电极材料的孔结构参数（孔隙率、孔径分布等）；通过揭示电极材料的孔结构参数对电极材料离子电导的影响规律，探索电极材料与电解质材料的匹配原则；并获得高能量密度、高功率密度和长循环寿命导电聚苯胺/活化石墨烯复合物电极材料的构筑方法。

中文关键词： 石墨烯；聚苯胺；微球；导电性；电化学性能

英文摘要： It is a worldwide problem that chemical energy storage materials and devices can not have both the high energy density and high power density. Aimed at the bottleneck problem of conductive polyaniline electrode materials with high theoretical specific capacity and low cost, and combined with the conductivity and energy storage mechanism of polyaniline, this application is starting from the basic scientific issues. Activation of graphene and the regulation of the pore structure parameters are introduced to build polyaniline/activated graphene complex microsphere electrode materials with a high electronic conductivity and a high ionic conductivity. Target electrode material can maximize the theoretical capacity of polyaniline to make up for electrically conductive defects of polyaniline electrode material in the charge/discharge start and end to achieve a high energy density and a high power density, and the cycle stability of the electrode material can be improved at the same time. In order to improve the conductivity of polyaniline, conductive networks based on activation of graphene are bulit in the conductive polyaniline microspheres. The pore structure parameters (porosity,pore size distribution,etc.)of the electrode material can be controlled by blending different size single-dispersed composite microspheres

英文关键词： Graphene；Polyaniline；Microsphere；Conductivity；Electrochemical Performance