Polyaniline-β-cyclodextrin-graphene nanocomposite for energy storage application: Efficiency enhancement through radical cation stabilization

TY - JOUR

T1 - Polyaniline-β-cyclodextrin-graphene nanocomposite for energy storage application

T2 - Efficiency enhancement through radical cation stabilization

AU - Gandla, Dayaker

AU - Sarkar, Suprabhat

AU - Putta, Chandrababu

AU - Ghosh, Sutapa

N1 - Publisher Copyright: © 2018 The Electrochemical Society.

PY - 2018

Y1 - 2018

N2 - In this study, we report a novel supramolecular polyaniline-β-cyclodextrin-graphene nanosheet (PANI-β-CD-GNS) composite through in situ polymerization of aniline in presence of β-CD-GNS. The microstructure and morphology of the PANI-β-CD-GNS are characterized by various techniques. The enhanced radical cation stability of the composite is confirmed by electron paramagnetic resonance (EPR) spectroscopy. PANI-β-CD-GNS exhibits superior electrochemical properties than PANI-GNS such as a specific capacitance of 1071 F g−1 at 2 mV s−1, good long term cycling stability with 91.8% capacitance retention after 5000 cycles at 5 A g−1 current density. It is observed that high radical cation stability of PANI-β-CD-GNS showed significant impact on its electrochemical properties. The results of electrochemical analysis clearly indicate the potential usability of this material as novel organic radical supercapacitors for high-performance energy storage devices.

AB - In this study, we report a novel supramolecular polyaniline-β-cyclodextrin-graphene nanosheet (PANI-β-CD-GNS) composite through in situ polymerization of aniline in presence of β-CD-GNS. The microstructure and morphology of the PANI-β-CD-GNS are characterized by various techniques. The enhanced radical cation stability of the composite is confirmed by electron paramagnetic resonance (EPR) spectroscopy. PANI-β-CD-GNS exhibits superior electrochemical properties than PANI-GNS such as a specific capacitance of 1071 F g−1 at 2 mV s−1, good long term cycling stability with 91.8% capacitance retention after 5000 cycles at 5 A g−1 current density. It is observed that high radical cation stability of PANI-β-CD-GNS showed significant impact on its electrochemical properties. The results of electrochemical analysis clearly indicate the potential usability of this material as novel organic radical supercapacitors for high-performance energy storage devices.

UR - http://www.scopus.com/inward/record.url?scp=85067409354&partnerID=8YFLogxK

U2 - 10.1149/2.0411811jes

DO - 10.1149/2.0411811jes

M3 - 文章

AN - SCOPUS:85067409354

SN - 0013-4651

VL - 165

SP - A2549-A2556

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 11

ER -