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Article

Atmospheric Pressure Tornado Plasma Jet of Polydopamine Coating on Graphite Felt for Improving Electrochemical Performance in Vanadium Redox Flow Batteries

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Department of Mechanical Engineering, National Taiwan University of Science and Technology, No.43, Section 4, Keelung Road, Taipei 10607, Taiwan
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Metal Industries Research & Development Centre, Kaohsiung 81160, Taiwan
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Department of Vehicle Engineering, National Pingtung University of Science and Technology, Neipu, Pingtung 91207, Taiwan
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Department of Mold and Die Engineering, National Kaohsiung University of Science and Technology, No.415, Jiangong Road, Kaohsiung 80778, Taiwan
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Laboratory for Future Interdisciplinary Research of Science and Technology, Tokyo Institute of Technology, Yokohama 226-8502, Japan
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Global Development Engineering Program, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Justo Lobato
Catalysts 2021, 11(5), 627; https://doi.org/10.3390/catal11050627
Received: 9 April 2021 / Revised: 7 May 2021 / Accepted: 10 May 2021 / Published: 12 May 2021
(This article belongs to the Special Issue Catalysts and Electrode Functionalization for Redox Flow Battery)
The intrinsic hydrophobicity of graphite felt (GF) is typically altered for the purpose of the surface wettability and providing active sites for the enhancement of electrochemical performance. In this work, commercial GF is used as the electrodes. The GF electrode with a coated-polydopamine catalyst is achieved to enhance the electrocatalytic activity of GF for the redox reaction of vanadium ions in vanadium redox flow battery (VRFB). Materials characteristics proved that a facile coating via atmospheric pressure plasma jet (APPJ) to alter the surface superhydrophilicity and to deposit polydopamine on GF for providing the more active sites is feasibly achieved. Due to the synergistic effects of the presence of more active sites on the superhydrophilic surface of modified electrodes, the electrochemical performance toward VO2+/VO2+ reaction was evidently improved. We believed that using the APPJ technique as a coating method for electrocatalyst preparation offers the oxygen-containing functional groups on the substrate surface on giving a hydrogen bonding with the grafted functional polymeric materials. View Full-Text
Keywords: vanadium redox flow battery (VRFB); polydopamine; graphite felt (GF); electrode; atmospheric pressure plasma jet (APPJ) vanadium redox flow battery (VRFB); polydopamine; graphite felt (GF); electrode; atmospheric pressure plasma jet (APPJ)
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MDPI and ACS Style

Chen, S.-Y.; Kuo, Y.-L.; Wang, Y.-M.; Hsu, W.-M.; Chien, T.-H.; Lin, C.-F.; Kuo, C.-H.; Okino, A.; Chiang, T.-C. Atmospheric Pressure Tornado Plasma Jet of Polydopamine Coating on Graphite Felt for Improving Electrochemical Performance in Vanadium Redox Flow Batteries. Catalysts 2021, 11, 627. https://doi.org/10.3390/catal11050627

AMA Style

Chen S-Y, Kuo Y-L, Wang Y-M, Hsu W-M, Chien T-H, Lin C-F, Kuo C-H, Okino A, Chiang T-C. Atmospheric Pressure Tornado Plasma Jet of Polydopamine Coating on Graphite Felt for Improving Electrochemical Performance in Vanadium Redox Flow Batteries. Catalysts. 2021; 11(5):627. https://doi.org/10.3390/catal11050627

Chicago/Turabian Style

Chen, Song-Yu, Yu-Lin Kuo, Yao-Ming Wang, Wei-Mau Hsu, Tzu-Hsuan Chien, Chiu-Feng Lin, Cheng-Hsien Kuo, Akitoshi Okino, and Tai-Chin Chiang. 2021. "Atmospheric Pressure Tornado Plasma Jet of Polydopamine Coating on Graphite Felt for Improving Electrochemical Performance in Vanadium Redox Flow Batteries" Catalysts 11, no. 5: 627. https://doi.org/10.3390/catal11050627

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