Oxygen evolution on Ru1-xNixO2-y nanocrystalline electrodes

0342809 - ÚFCH JH 2011 RIV DE eng J - Journal Article
Macounová, Kateřina - Jirkovský, Jakub - Makarova, Marina - Franc, Jiří - Krtil, Petr
Oxygen evolution on Ru1-xNixO2-y nanocrystalline electrodes.
Journal of Solid State Electrochemistry. Roč. 13, č. 6 (2009), s. 959-965. ISSN 1432-8488. E-ISSN 1433-0768
R&D Projects: GA AV ČR KAN100400702
Institutional research plan: CEZ:AV0Z40400503
Keywords : electrolysis * film electrodes * oxygen evolution
Subject RIV: CG - Electrochemistry
Impact factor: 1.821, year: 2009

Nanocrystalline Ru1-xNixO2-y with 0.02<x<0.30 were prepared by a sol-gel approach at temperatures between 300 and 600 degrees C. XRD patterns of the prepared materials indicate a single-phase character conforming to a tetragonal syngony. All prepared materials are sufficiently stable in acid media and show activity towards oxygen evolution. The activity towards oxygen evolution reaction of the materials with constant chemical composition decreases with increasing particle size. The increasing Ni content enhances the electrocatalytic activity in a stepwise manner with abrupt changes for materials containing approximately 5% or 15% of the cationic sites substituted by Ni.
Permanent Link: http://hdl.handle.net/11104/0185436