The role of platinum oxide in the electrode system Pt(O2)/yttria-stabilized zirconia

Autor:	Eva Mutoro, Christine Raiß, Jürgen Janek, Bjoern Luerßen, Majid Kazemian Abyaneh, H. Pöpke, Luca Gregoratti, Matteo Amati
Rok vydání:	2011
Předmět:	Working electrode Materials science General Chemical Engineering Inorganic chemistry Oxide chemistry.chemical_element Dielectric spectroscopy chemistry.chemical_compound chemistry Electrode Electrochemistry Cyclic voltammetry Polarization (electrochemistry) Platinum Yttria-stabilized zirconia
Zdroj:	Electrochimica Acta. 56:10668-10675
ISSN:	0013-4686
DOI:	10.1016/j.electacta.2011.04.057
Popis:	The existence and role of platinum oxide in the solid state electrode system Pt(O2)/yttria-stabilized zirconia is discussed. Covering and porous model-type Pt film electrodes on YSZ single crystals are investigated by cyclic voltammetry, electrochemical impedance spectroscopy, and in situ scanning photoelectron microscopy. The formation of Pt oxide and its amount strongly depend on the experimental conditions, such as temperature, oxygen partial pressure, and oxygen flux towards the electrode during anodic polarization. Electrode activation and deactivation processes can be explained by formation and decomposition of Pt oxide, which is reducing or inhibiting the oxygen exchange rate.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2042ede3dc67cee97bea29688f09efe9 https://doi.org/10.1016/j.electacta.2011.04.057 Zobrazit plný text záznamu Full Text from ScienceDirect