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Title: Synthesis of Co-Fe nanoparticle supported on titanium oxide-nanotubes (TiO2-NTs) as enhanced oxygen reduction reaction electrocatalyst
Authors: Chaturvedi A.
Kundu, Patit Paban
Sehgal S.
Goyal P.
Published in: Materials Today: Proceedings
2nd International Conference on Aspects of Materials Science and Engineering, ICAMSE 2021
Abstract: The performance of electrocatalyst is usually limited owing to the slow electron transfer kinetics of cathode reduction reaction. Therefore, the development of high-performance cathode catalysts has an impact on the wide-spread application of fuel cells. The improvement of appropriate doping approaches is important to achieve high-performance electrocatalytic resources. Herein, a series of Co-Fe @ TiO2-NTs electrocatalytic composites were synthesized by doping various amounts of metals. The synthesis, physiochemical and electrocatalytic activity of cobalt (Co) and iron (Fe) nanocatalysts supported on one dimensional (1-D) titanium oxide-nanotubes (TiO2-NTs) matrix towards oxygen reduction reaction was reported. The Co-Fe nanoparticles confined in TiO2 nanotube were produced as the oxygen reduction electrocatalyst by hydrothermal and reduction method. Electrochemical tests showed that the reduction peak current of -0.305 mA was recorded for catalyst Co-Fe (7:3) @ TiO2-NTs and was observed to be 1.50 times superior to that for the catalyst commercial catalyst Pt/C (-0.202 mA). The electrochemical characterizations of these nanocatalysts also suggest that the Co-Fe (7:3) @ TiO2-NTs showed lower charge transfer resistance (109.4 X) in comparison to Pt/C (350.4 X) towards oxygen reduction reactions (ORR). These superior electrochemical results suggested that Co-Fe nanoparticle supported on titanium oxide-nanotubes (TiO2-NTs) could be applied as a potential alternative to the commercial Pt/C cathode catalyst for their application as oxygen reduction reaction (ORR) electrocatalyst in a neutral medium. © 2021 Elsevier Ltd. All rights reserved.
Citation: Materials Today: Proceedings (2021), 45: 5518-5522
Issue Date: 2021
Publisher: Elsevier Ltd
Keywords: Cathode catalyst
Cobalt (Co) and iron (Fe) nanocatalysts
Cyclic voltammograms
Oxygen reduction reaction (ORR)
Titanium oxide-nanotubes (TiO2-NTs)
ISSN: 22147853
Author Scopus IDs: 57224353334
Author Affiliations: Chaturvedi, A., Department of Chemical Engineering, Indian Institute of Technology, Roorkee, 247 667, India
Kundu, P.P., Department of Chemical Engineering, Indian Institute of Technology, Roorkee, 247 667, India
Funding Details: AC is obliged for a Ph.D. fellowship to the Ministry of Human Resource Development (MHRD), Govt. of India. This research work was supported and carried out at IIT Roorkee, India. Ministry of Human Resource Development, MHRD
Corresponding Author: Chaturvedi, A.; Department of Chemical Engineering, India; email:
Appears in Collections:Conference Publications [CH]

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