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Tammeveski, Kaido
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Publications (4/4 displayed)
- 2024ZIF-8 derived iron-, sulphur-, and nitrogen-doped catalysts for anionexchange membrane fuel cell applicationcitations
- 2023Ag Sputter-Deposited on MnO2-Carbon Nanotube Nanocomposites as Electrocatalysts for Oxygen Reduction Reaction in Alkaline Mediacitations
- 2023Electrospun Carbon Nanofibre‐Based Catalysts Prepared with Co and Fe Phthalocyanine for Oxygen Reduction in Acidic Mediumcitations
- 2017Loading effect of carbon-supported platinum nanocubes on oxygen electroreductioncitations
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article
Ag Sputter-Deposited on MnO2-Carbon Nanotube Nanocomposites as Electrocatalysts for Oxygen Reduction Reaction in Alkaline Media
Abstract
<jats:p>As energy demand increases, new energy conversion methods are also sought. In this study, two MnO2 and multiwalled carbon nanotube (MWCNT) composites were prepared and decorated with silver using magnetron sputtering, to evaluate their electrocatalytic activity towards the oxygen reduction reaction (ORR). Three nominal thicknesses of Ag layers were used, 5, 10 and 20 nm. The physicochemical characterisation was carried out using scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy, as well as X-ray photoelectron spectroscopy. The substrate materials (MnO2-MWCNT) were also investigated by X-ray diffraction analysis. The electrochemical studies of the ORR revealed that the activity and stability of the composite catalysts depend on the substrate material and the Ag layer thickness.</jats:p>