Electrophoretic deposition of nitrogen-boron co-doped graphene as high performance electrode for next generation supercapacitors

Amit Kumar, Nagesh Kumar, Pragya Singh, Jih-Perng Leu, Tseung-Yuen Tseng

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

In this study, we report the electrophoretic deposition (EPD) of nitrogen-boron co-doped graphene (NBG) synthesized via simple hydrothermal method and subsequent annealing at 750°C in reducing environment. The structural, chemical-compositional and morphological investigations of the as synthesized NBG have been investigated using X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). The electrochemical properties of the samples have been studied via cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) cycling and electrochemical impedance spectroscopy (EIS) in a conventional three-electrode system using 6M KOH aqueous electrolyte. The EPD grown binder free NBG electrode exhibits high specific capacitance of 217 Fg1 at the scan rate of 5 mVs1 which is about 1.2 times higher than the specific capacitance (180 Fg1 at 5 mVs1) of pristine reduced graphene oxide synthesized via similar approach. Furthermore, this sample exhibits excellent rate capability, and -103% retention after 8800 successive charge-discharge cycles at 1 Ag-1

Original languageEnglish
Title of host publicationECS Transactions
PublisherElectrochemical Society Inc.
Pages521-530
Number of pages10
Edition13
ISBN (Electronic)9781607685395
DOIs
StatePublished - 1 Jan 2018
Event233rd Meeting of the Electrochemical Society - Seattle, United States
Duration: 13 May 201817 May 2018

Publication series

NameECS Transactions
Number13
Volume85
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference233rd Meeting of the Electrochemical Society
CountryUnited States
CitySeattle
Period13/05/1817/05/18

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