Improving the electrochemical performance by sulfonation of polyaniline-graphene-silica composite for high performance supercapacitor

被引：21
作者：
Ravi, Bolagam [1 ]
Rajender, Boddula [1 ]
Palaniappan, Srinivasan [1 ,2 ]
机构：
[1] CSIR Indian Inst Chem Technol, Polymers & Funct Mat Div, Hyderabad 500007, Telangana, India
[2] CSIR Network Inst Solar Energy NISE, New Delhi, India
来源：
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS | 2016年 / 65卷 / 16期
关键词：
Graphene; polyaniline; sulfonation; supercapacitor; ternary composite; ENERGY-STORAGE; ELECTRODES; NANOCOMPOSITES;
D O I：
10.1080/00914037.2016.1171221
中图分类号：
TB3 [工程材料学]; R318.08 [生物材料学];
学科分类号：
0805 ; 080501 ; 080502 ;
摘要：
In this work, to increase the specific capacitance and energy density of reduced graphene oxide-silica composite (RGO-SiO2), pseudocapacitive behaviour of polyaniline is introduced to RGO-SiO2(PANI-RGO-SiO2) and further improved by sulfonating the polyaniline system (SPANI-RGO-SiO2). Formation of SPANI-RGO-SiO2 is confirmed from IR and XRD analyses. SPANI-RGO-SiO2 shows nanorods morphology with less crystalline nature. The specific capacitance of RGO-SiO2 is increases from 24 to 780 F g(-1) with sulfonation of polyaniline in RGO-SiO2. Retention in the specific capacitance value of SPANI-RGO-SiO2 is 85% with that of its original value of 780 F g(-1) with coulombic efficiency (96-99%). [GRAPHICS] .
引用
收藏
页码：835 / 840
页数：6
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