Journal
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
Volume 65, Issue 16, Pages 835-840Publisher
TAYLOR & FRANCIS AS
DOI: 10.1080/00914037.2016.1171221
Keywords
Graphene; polyaniline; sulfonation; supercapacitor; ternary composite
Categories
Funding
- CSIR, New Delhi, under the TAPSUN program [NWP-0056]
- UGC, India
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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] .
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