Preparation of a Nitrogen-Doped Reduced Graphene Oxide-Modified Graphite Felt Electrode for VO2+VO2+ Reaction by Freeze-Drying and Pyrolysis Method
Joint Authors
Sun, Hong
Li, Qiang
Bai, Anyu
Li, Jie
Yu, Mingfu
Liu, Jiaqiang
Li, Penghui
Zhang, Xiaochen
Wang, Junhai
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-09
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
As one of the key factors that limit the development of vanadium redox flow battery (VRFB), the positive redox couple of VO2+/VO2+ plays an important role on the overall performance of VRFB.
To improve the kinetics of a positive reaction, a new designed nitrogen-doped reduced graphene oxide-modified graphite felt (N-rGO/GF) electrode was prepared by coupling the methods of freeze-drying and pyrolysis.
The characteristics of the prepared electrode were measured by scanning electron microscope (SEM), Brunauer–Emmett–Teller (BET) analysis, Raman spectroscopy (Raman), X-ray diffraction (XRD), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and charge-discharge tests.
By coupling the methods of freeze-drying and pyrolysis, the N-rGO can be evenly dispersed on the surface of GF electrode, resulting in an excellent catalytic activity.
The results demonstrate that the proposed N-rGO/GF electrode with pyrolysis temperature of 900°C shows excellent electrochemical performance and significantly improves the catalytic activity and electrochemical reversibility for the positive VO2+/VO2+ reaction, indicating that the proposed composite electrode has potential applications in the improvement of VRFB performance.
American Psychological Association (APA)
Li, Qiang& Liu, Jiaqiang& Bai, Anyu& Li, Penghui& Li, Jie& Zhang, Xiaochen…[et al.]. 2019. Preparation of a Nitrogen-Doped Reduced Graphene Oxide-Modified Graphite Felt Electrode for VO2+VO2+ Reaction by Freeze-Drying and Pyrolysis Method. Journal of Chemistry،Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1171932
Modern Language Association (MLA)
Li, Qiang…[et al.]. Preparation of a Nitrogen-Doped Reduced Graphene Oxide-Modified Graphite Felt Electrode for VO2+VO2+ Reaction by Freeze-Drying and Pyrolysis Method. Journal of Chemistry No. 2019 (2019), pp.1-9.
https://search.emarefa.net/detail/BIM-1171932
American Medical Association (AMA)
Li, Qiang& Liu, Jiaqiang& Bai, Anyu& Li, Penghui& Li, Jie& Zhang, Xiaochen…[et al.]. Preparation of a Nitrogen-Doped Reduced Graphene Oxide-Modified Graphite Felt Electrode for VO2+VO2+ Reaction by Freeze-Drying and Pyrolysis Method. Journal of Chemistry. 2019. Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1171932
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1171932