PtNi-Decorated Metal Oxide Electrodes for Borohydride Fuel Cells

Autor:	Tansel Şener, Biljana Šljukić, Diogo M.F. Santos, César A.C. Sequeira, Ayşe Bayrakçeken Yurtcan, Marta Martins, Gamze Bozkurt, Gulin Selda Pozan Soylu
Rok vydání:	2016
Předmět:	Metal chemistry.chemical_compound chemistry visual_art Electrode Inorganic chemistry visual_art.visual_art_medium Oxide Fuel cells Borohydride
Zdroj:	ECS Transactions. 72:57-64
ISSN:	1938-6737 1938-5862
Popis:	PtNi nanoparticles are grafted onto three different metal oxide supports, namely MnO2, MnO2+TiO2 and MnO2+NiO. Subsequently, their activity for oxygen reduction reaction (ORR) and borohydride oxidation reaction (BOR) in alkaline media was studied using voltammetric techniques. The dependence of electrocatalysts behavior on reaction conditions, such as electrolyte temperature, was also evaluated. ORR and BOR kinetic parameters, namely Tafel slopes, kinetic current densities, and activation energies, were determined from the obtained data in order to compare the performance of the three electrocatalysts prepared. These results show that PtNi anchored on metal oxide supports possess electrocatalytic activity for ORR and BOR in alkaline media, which suggests potential application of these materials in direct borohydride fuel cells.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f6396d5a5e2684ab55f62ab0451f85d2 https://doi.org/10.1149/07225.0057ecst Zobrazit plný text záznamu