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Phosphonated graphene oxide with high electrocatalytic performance for vanadium redox flow battery

Development of more efficient electrodes is essential to improve the competitiveness of vanadium redox flow battery (VRFB) systems. Covalent functionalization of carbon structure in graphene oxide with phosphonic acid groups was carried out to enhance the electrode wettability. The phosphonated grap...

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Main Authors: Etesami, M., Abouzari-Lotf, E., Ripin, A., Mahmoud Nasef, M., Ting, T.M., Saharkhiz, A., Ahmad, A.
Format: Article
Published: Elsevier Ltd 2018
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85035217164&doi=10.1016%2fj.ijhydene.2017.11.050&partnerID=40&md5=1faaf184fbdf5feb7ad1bf56ecae8b71
http://eprints.utp.edu.my/21860/
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spelling my.utp.eprints.218602019-02-20T06:26:16Z Phosphonated graphene oxide with high electrocatalytic performance for vanadium redox flow battery Etesami, M. Abouzari-Lotf, E. Ripin, A. Mahmoud Nasef, M. Ting, T.M. Saharkhiz, A. Ahmad, A. Development of more efficient electrodes is essential to improve the competitiveness of vanadium redox flow battery (VRFB) systems. Covalent functionalization of carbon structure in graphene oxide with phosphonic acid groups was carried out to enhance the electrode wettability. The phosphonated graphene oxide (P-GO) was characterized and found displaying an improved electrocatalytic performance towards electrooxidation/electroreduction of vanadium ion pairs. The defect in P-GO structure increased the negative charge density on the surface leading to higher vanadium ions tendency for electrooxidation/electroreduction reactions. The battery performance was evaluated using electrodes made of carbon felt hosted GO and P-GO in a single cell VRFB and 180 charge-discharge cycles were recorded. The VRFB with P-GO displayed an improved performance and stable coulombic, voltage and energy efficiency compared to VRFB with GO. © 2017 Hydrogen Energy Publications LLC Elsevier Ltd 2018 Article PeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85035217164&doi=10.1016%2fj.ijhydene.2017.11.050&partnerID=40&md5=1faaf184fbdf5feb7ad1bf56ecae8b71 Etesami, M. and Abouzari-Lotf, E. and Ripin, A. and Mahmoud Nasef, M. and Ting, T.M. and Saharkhiz, A. and Ahmad, A. (2018) Phosphonated graphene oxide with high electrocatalytic performance for vanadium redox flow battery. International Journal of Hydrogen Energy, 43 (1). pp. 189-197. http://eprints.utp.edu.my/21860/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description Development of more efficient electrodes is essential to improve the competitiveness of vanadium redox flow battery (VRFB) systems. Covalent functionalization of carbon structure in graphene oxide with phosphonic acid groups was carried out to enhance the electrode wettability. The phosphonated graphene oxide (P-GO) was characterized and found displaying an improved electrocatalytic performance towards electrooxidation/electroreduction of vanadium ion pairs. The defect in P-GO structure increased the negative charge density on the surface leading to higher vanadium ions tendency for electrooxidation/electroreduction reactions. The battery performance was evaluated using electrodes made of carbon felt hosted GO and P-GO in a single cell VRFB and 180 charge-discharge cycles were recorded. The VRFB with P-GO displayed an improved performance and stable coulombic, voltage and energy efficiency compared to VRFB with GO. © 2017 Hydrogen Energy Publications LLC
format Article
author Etesami, M.
Abouzari-Lotf, E.
Ripin, A.
Mahmoud Nasef, M.
Ting, T.M.
Saharkhiz, A.
Ahmad, A.
spellingShingle Etesami, M.
Abouzari-Lotf, E.
Ripin, A.
Mahmoud Nasef, M.
Ting, T.M.
Saharkhiz, A.
Ahmad, A.
Phosphonated graphene oxide with high electrocatalytic performance for vanadium redox flow battery
author_facet Etesami, M.
Abouzari-Lotf, E.
Ripin, A.
Mahmoud Nasef, M.
Ting, T.M.
Saharkhiz, A.
Ahmad, A.
author_sort Etesami, M.
title Phosphonated graphene oxide with high electrocatalytic performance for vanadium redox flow battery
title_short Phosphonated graphene oxide with high electrocatalytic performance for vanadium redox flow battery
title_full Phosphonated graphene oxide with high electrocatalytic performance for vanadium redox flow battery
title_fullStr Phosphonated graphene oxide with high electrocatalytic performance for vanadium redox flow battery
title_full_unstemmed Phosphonated graphene oxide with high electrocatalytic performance for vanadium redox flow battery
title_sort phosphonated graphene oxide with high electrocatalytic performance for vanadium redox flow battery
publisher Elsevier Ltd
publishDate 2018
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85035217164&doi=10.1016%2fj.ijhydene.2017.11.050&partnerID=40&md5=1faaf184fbdf5feb7ad1bf56ecae8b71
http://eprints.utp.edu.my/21860/
_version_ 1738656348424372224
score 13.211869

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