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...
| Main Authors: | Etesami, M., Abouzari-Lotf, E., Ripin, A., Mahmoud Nasef, M., Ting, T.M., Saharkhiz, A., Ahmad, A. |
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| Format: | Article |
| Institution: | Universiti Teknologi Petronas |
| Record Id / ISBN-0: | utp-eprints.21860 / |
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Elsevier Ltd
2018
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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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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 |
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UTP Institutional Repository |
| 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_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_ |
1741196532637499392 |
| score |
11.62408 |