首页 | 本学科首页   官方微博 | 高级检索  
     


Enhanced electrochemical capacitance of polyaniline/graphene hybrid nanosheets with graphene as templates
Affiliation:1. School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430073, China;2. Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China;3. State Key Laboratory of Materials Processing and Die & Mould Technology, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;4. Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China;1. Key Laboratory of Sensor Analysis of Tumor Marker of Education Ministry, Shandong Provincial Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;2. College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;1. State Key Laboratory of Solidification Processing, Shaanxi Engineering Laboratory for Graphene New Carbon Materials and Application, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China;2. Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Kowloon, Hong Kong;3. Department of Physics, Aberystwyth University, Aberystwyth SY23 3FL, UK
Abstract:Polyaniline/graphene nanocomposites (PANi/GR) were prepared via PANi covalent grafting from the surface of GR. The unique structure of hybrid nanosheets was formed with uniform PANi layer coating GR without phase separation appearing when the weight ratio of aniline-to-graphene was 1:1. The unique PANi/GR hybrid nanosheets as electrode material for supercapacitors have a specific capacitance as high as 922 F/g at 10 mV/s and still retain a specific capacitance of 106 F/g at a high scan rate of 1 V/s due to synergistic effect between PANi and GR. The capacitance retention was ~90% after 1000 cycles, which is much better than that of pure PANi or other PANi nanocomposites. The enhanced capacitive performance of PANi/GR hybrid nanosheets makes them have potential application in developing high performance energy storage devices.
Keywords:A  Nano-structures  B  Electrical properties  B  Microstructures  D  Chemical analysis
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号