Highly active Rare Earth (RE) Vanadate, Tungstate loaded ZnO (RE= Gd, Dy and Ho) Nanocomposites for Electrochemical methanol Oxidation-A Comparative study for Fuel cell Application. (2018)

• Record Type: Journal Article
• Authors: Thirumalai, K.; Shanthi, M.; Swaminathan, M.
• Is Part Of: Materials today. Volume 5:Number 11(2018)Part 2
• Page Start: 15342
• Page End: 15347
• Publication Date: 2018
• Subjects: Rare earth oxide -- Methanol oxidation -- Fuel cell -- Electrocatalysis -- GdVO4–ZnO -- Gd2WO6–ZnO -- DyVO4–ZnO -- Dy2WO6–ZnO -- HoVO4–ZnO -- Ho2WO6–ZnO; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2018.05.015
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Fuel cell converts chemical energy into electrical energy with negligible generation of pollutant. Direct methanol fuel cells (DMFC) are used as power source for electronic devices as its mass energy can be easily functionalized to these devices. We fabricated rare earth (RE= Gd, Dy and Ho) vanadate and tungstate supported ZnO nanomaterials hydrothermally and analysed their Electrocatalytic efficiency in methanol oxidation. It is noticeable that the current density of the prepared catalyst (GdVO4 –ZnO: 3.42mA), (DyVO4 –ZnO: 4.64mA), (HoVO4 –ZnO: 3.30mA), (Gd2 WO6 –ZnO: 2.92mA), (Dy2 WO6 –ZnO: 2.64mA) and (Ho2 WO6 –ZnO: 2.90mA) is much higher than that of prepared ZnO (1.32 mA). Chronoamperometric curves indicate stability and poison tolerance of the prepared catalysts are much higher than prepared ZnO for methanol oxidation under alkaline medium.