石墨烯/聚吡咯/聚苯胺复合材料的制备与电容性能  

Preparation and capacitive properties of graphene/polypyrrole/polyaniline composites

作　　者：王攀[1,2] 刘国龙 蒋倩茹 WANG Pan;LIU Guolong;JIANG Qianru(School of Materials and Chemical Engineering,Chuzhou University,Chuzhou239000,Anhui Province,China;Anhui Province Key Laboratory of Environment-friendly Polymer Materials,Hefei230601,China)

机构地区：[1]滁州学院材料与化学工程学院,安徽滁州239000 [2]安徽省绿色高分子材料重点实验室,安徽合肥230601

出　　处：《电子元件与材料》2022年第4期347-355,共9页Electronic Components And Materials

基　　金：安徽省高校自然科学研究项目(KJ2020B18);国家级大学生创新创业训练计划(202110377030)。

摘　　要：超级电容器是一种绿色储能节能器件,其性能主要是由电极材料所决定的。以疏松的石墨烯(GR)为模板,先后以吡咯(Py)和苯胺(ANi)为单体,采用两步原位聚合法制备了具有“三明治”结构的石墨烯/聚吡咯/聚苯胺(GR/PPy/PANi)复合材料,探索了原料比对复合材料结构、微观形貌、电化学性能的影响。研究表明,Py和ANi分别能均匀地聚合在GR和GR/PPy纳米片上;GR/PPy/PANi复合材料具有较小的内阻,兼有双电层电容和赝电容储能,当GR∶Py∶ANi原料质量比为1∶5∶5和电流密度为0.2 A/g时,其放电比电容和能量密度分别达到178.8 F/g和35.8 Wh/kg。原料比对GR/PPy/PANi复合材料电容性能的影响较大,通过对复合材料的优化设计,可以开发用作超级电容器的电极材料。Supercapacitor is a type of green energy storage device whose performance is mainly determined by electrode material.Graphene/polypyrrole/polyaniline(GR/PPy/PANi)sandwich structure composites were fabricated by a two-step in situ polymerization using loose graphene(GR)as template,pyrrole(Py)and aniline(ANi)as monomers.The effects of raw material ratio on the structure,morphology,electrical conductivity and electrochemical properties of the composites were investigated in detail.The results show that the Py and ANi could be uniformly aggregated on the GR and GR/PPy nanosheets,respectively.The GR/PPy/PANi composites have smaller resistance,double-layer capacitance and pseudocapacitance storage.As the raw material ratio increases,the specific capacitance and energy density of the composites first increase and then decrease.Its specific capacitance and energy density reached 178.8 F/g and 35.8 Wh/kg at the GR∶Py∶ANi ratio of 1∶5∶5 and current density of 0.2 A/g,respectively.The material ratio of the GR/PPy/PANi composites have great impact on the capacitance performance,and it can be developed as electrode materials for supercapacitor by optimizing the design of the composites.

关 键 词：石墨烯 聚吡咯 聚苯胺 复合材料 电容性能 

分 类 号：TN604[电子电信—电路与系统]