Flexible Asymmetric Supercapacitor Based on Functionalized Reduced Graphene Oxide Aerogels with Wide Working Potential Window

ACS Applied Materials & Interfaces
Anindita BoraSwapan Kumar Dolui

Abstract

Flexible energy storage devices are in great demand since the advent of flexible electronics. Until now, flexible supercapacitors based on graphene analogues usually have had low operating potential windows. To this end, two dissimilar electrode materials with complementary potential ranges are employed to obtain an optimum cell voltage of 1.8 V. A low-temperature organic sol-gel method is used to prepare two different types of functionalized reduced graphene oxide aerogels (rGOA) where Ag nanorod functionalized rGOA acts as a negative electrode while polyaniline nanotube functionalized rGOA acts as a positive electrode. Both materials comprehensively exploit their unique properties to produce a device that has high energy and power densities. An assembled all-solid-state asymmetric supercapacitor gives a high energy density of 52.85 W h kg-1 and power density of 31.5 kW kg-1 with excellent cycling and temperature stability. The device also performs extraordinarily well under different bending conditions, suggesting its potential to meet the requirements for flexible electronics.

References

Sep 16, 2008·Nano Letters·Meryl D StollerRodney S Ruoff
Sep 24, 2010·Journal of the American Chemical Society·Marcus A WorsleyTheodore F Baumann
Nov 10, 2010·Nano Letters·Chenguang LiuBor Z Jang
Aug 10, 2011·ACS Nano·Bong Gill ChoiHoSeok Park
Oct 25, 2011·Physical Chemistry Chemical Physics : PCCP·Shengtong Sun, Peiyi Wu
Dec 30, 2014·ACS Applied Materials & Interfaces·Zhu-Yin SuiBao-Hang Han
Mar 1, 2017·Advanced Materials·Nitin ChoudharyJayan Thomas

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Citations

Jun 15, 2021·Nanotechnology·Jasmin S ShaikhChandrakant D Lokhande
Mar 18, 2020·ACS Applied Materials & Interfaces·Sanjoy MondalMasayoshi Higuchi

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