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Vol. 33 No. 4 (2021): Vol 33 Issue 4

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Fabrication of Non-precious Vanadium Tungsten Nanocomposite for Enhanced Electrocatalytic Oxygen Reduction Reaction

https://doi.org/10.14233/ajchem.2021.23097
L. Stanlykeninxavier
Department of Physics, Pachaiyappa’s College, Chennai-600030, India ; Department of Physics, Government Girls Higher Secondary School, Thirumayam, Pudukkotai-622507, India
P. Elangovan
Department of Physics, Pachaiyappa’s College, Chennai-600030, India
M.S.S. Saravanakumaar
Department of Physics, Saraswathi Narayanan College (Autonomous), Madurai-625022, India

Corresponding Author(s) : P. Elangovan

drelangovanphysics@gmail.com

Asian Journal of Chemistry, Vol. 33 No. 4 (2021): Vol 33 Issue 4

Abstract

For the commercialization of alkaline fuel cells and metal air batteries, the advances in non-precious, cheap, stable electrocatalysts for the oxygen reduction reaction (ORR) and highly active remain a major problem. To overcome this problem, a facile approach was established to fabricate non-precious metal electrocatalysts, such as nanoparticles, pristine V2O5 and their WO3 hybrids. This is the first study reporting the utilization of monoclinic-WO3-nanocrystal-coupled V2O5 that serves as ORR catalysts. Compared with 50 wt.% WO3 with 50 wt.% V2O5 (VW-2) spheres and pristine V2O5, the hybrid catalyst of 25 wt.% WO3 and 75 wt.% V2O5 (VW-1) spheres exhibits outstanding catalytic activity towards ORR. In addition, the hybrid of 25 wt.% WO3 and 75 wt.% V2O5 (VW-1) exhibits a higher long-term durability and catalytic activity than high-quality commercial Pt/C catalysts, which renders the composites of WO3/V2O5 composites hybrid a high-capacity candidate for non-precious, high-performance, metal-based electrocatalysts having high efficiency and low cost for electrochemical energy conversion. The enhanced activity of WO3/V2O5 composites is mainly obtained from the improved structural openness in the V2O5 tunnel structure when coupled with WO3.

Keywords

Electrocatalysts Oxygen reduction Vanadium pentaoxide Tungsten oxide Fuel cells
Stanlykeninxavier, L., Elangovan, P., & Saravanakumaar, M. (2021). Fabrication of Non-precious Vanadium Tungsten Nanocomposite for Enhanced Electrocatalytic Oxygen Reduction Reaction. Asian Journal of Chemistry, 33(4), 919–924. https://doi.org/10.14233/ajchem.2021.23097
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