Synthesis and electrochemical properties of three-dimensional graphene/polyaniline composites for supercapacitor electrode materials  

作　　者：赵文 何大伟 王永生 杜翔 忻昊 

机构地区：[1]Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology,Beijing Jiaotong University

出　　处：《Chinese Physics B》2015年第4期366-371,共6页中国物理B（英文版）

基　　金：Project supported by the National Basic Research Program of China(Grant Nos.2011CB932700 and 2011CB932703);the National Natural Science Foundation of China(Grant Nos.61335006,61378073,and 61077044);the Beijing Natural Science Foundation,China(Grant No.4132031);the Fundamental Research Funds for the Central Universities of Beijing Jiaotong University,China(Grant No.2014YJS136)

摘　　要：To improve the specific capacitance and rate capability of electrode material for supercapacitors, a three-dimensional graphene/polyaniline （3DGN/PANI） composite is prepared via in situ polymerization on GN hydrogel. PANI grows on the GN surface as a thin film, and its content in the composite is controlled by the concentration of the reaction monomer. The specific capacitance of the 3DGN/PANI composite containing 10 wt% PANI reaches 322.8 F.g-1 at a current density of 1 A.g-1, nearly twice as large as that of the pure 3DGN （162.8 F.g-1）. The capacitance of the composite is 307.9 F.g-1 at 30 A.g-1 （maintaining 95.4%）, and 89% retention after 500 cycles. This study demonstrates the exciting potential of 3DGN/PANI with high capacitance, excellent rate capability and long cycling life for supercapacitors.To improve the specific capacitance and rate capability of electrode material for supercapacitors, a three-dimensional graphene/polyaniline （3DGN/PANI） composite is prepared via in situ polymerization on GN hydrogel. PANI grows on the GN surface as a thin film, and its content in the composite is controlled by the concentration of the reaction monomer. The specific capacitance of the 3DGN/PANI composite containing 10 wt% PANI reaches 322.8 F.g-1 at a current density of 1 A.g-1, nearly twice as large as that of the pure 3DGN （162.8 F.g-1）. The capacitance of the composite is 307.9 F.g-1 at 30 A.g-1 （maintaining 95.4%）, and 89% retention after 500 cycles. This study demonstrates the exciting potential of 3DGN/PANI with high capacitance, excellent rate capability and long cycling life for supercapacitors.

关 键 词：graphene/polyaniline composites electrochemical property three-dimensional graphene 

分 类 号：TM53[电气工程—电器] TQ323.9[化学工程—合成树脂塑料工业]