Journal
MODERN PHYSICS LETTERS B
Volume 35, Issue 32, Pages -Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217984921504315
Keywords
Electrocatalysts; oxygen reduction; V2O5; WO3; nanocomposites
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This paper reports on the excellent oxygen reduction activity and durability of a composite structure consisting of highly active V2O5-WO3 electrocatalyst under alkaline conditions. The 25 wt.% V2O5 with 75 wt.% WO3 catalyst exhibited outstanding catalytic performance, attributed to the optimum concentration of V2O5, high surface area, conductivity, and mesoporous nature.
This paper presents the first report of the excellent oxygen reduction activity and durability of a composite structure that consists of highly active V2O5-WO3 electrocatalyst. Outstanding electrocatalytic performance toward oxygen reduction under alkaline medium was achieved by selecting a highly active and optimum concentration of V2O5 on WO3 composite. In particular, the excellent catalytic activity of the 25 wt.% V2O5 with 75 wt.% WO3(WV-1) catalyst for oxygen reduction reaction (ORR) can be attributed to the optimum concentration of V2O5, high surface area, high conductivity, and mesoporous nature, since they aid facile electrochemical activity and reduced overpotential and small Tafel values than other catalysts. In addition, it exhibits long-term durability.
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