Fabrication of S,N co-doped graphene powders for symmetrical supercapacitors in different aqueous electrolytes

Melih Besir Arvas, Nilgun Karatepe, Metin Gencten, Yucel Sahin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

In this study, coin cell symmetrical supercapacitors were obtained using S,N co-doped graphene powders. S,N co-doped graphene powders were prepared using Yucel’s Method with cyclic voltammetry at different potential ranges for selective modification of powders by functional groups. Electrochemical, spectroscopic and microscopic characterization of S,N co-doped graphene powders were carried out. The formation of graphene layers was supported by scanning electron microscopy and Raman analysis. Functional groups formed on the surfaces of S,N co-doped graphene powders were determined by X-ray photoelectron spectroscopy. Specific capacitances of the coin cell symmetrical supercapacitors prepared with S,N co-doped graphene powders were determined by cyclic charge–discharge tests. The highest specific capacitance was 188.3 F.g−1 and the highest energy and power values were determined as 163.4 Wh.kg−1 and 2173.9 W.kg−1, respectively.

Original languageEnglish
Article number1068
JournalJournal of Materials Science: Materials in Electronics
Volume34
Issue number12
DOIs
Publication statusPublished - Apr 2023

Bibliographical note

Publisher Copyright:
© 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.

Funding

This work was supported by Yildiz Technical University under the contract number of FDK‐2019‐3573.

FundersFunder number
Yildiz Teknik ÜniversitesiFDK‐2019‐3573

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