Comparison of electrocatalytic and corrosion characteristics of monoplatinum and trimetallic (PtCoCr) systems

Autor:	L. P. Kazanskii, V. A. Bogdanovskaya, G. V. Zhutaeva, M. R. Tarasevich, M. V. Radina, L. A. Reznikova
Rok vydání:	2011
Předmět:	Chemistry Organic Chemistry Inorganic chemistry Metals and Alloys chemistry.chemical_element Sulfuric acid Electrochemistry Electrocatalyst Surfaces Coatings and Films Corrosion Catalysis chemistry.chemical_compound Specific surface area Materials Chemistry Platinum Dissolution
Zdroj:	Protection of Metals and Physical Chemistry of Surfaces. 47:895-906
ISSN:	2070-206X 2070-2051
DOI:	10.1134/s2070205111070161
Popis:	Electrocatalytic activity in reactions of oxygen reduction and corrosion stability (chemical in the sulfuric acid solution saturated by air) and electrochemical stability (under catalyst potential cycling in different ranges) were studied on the commercial monoplatinum catalyst and synthesized PtCoCr trimetallic system. The trimetallic system characterized by alloy formation exceeds the monoplatinum catalyst in all three parameters (specific surface area of the platinum component, electrocatalytic activity, and stability). The dissolution of the trimetallic system components changes the composition of the system and leads to the formation of a new surface platinum-enriched structure of nanoparticles with different properties caused by the strong ligand effect of the subsurface alloy layer.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d2714c45d1f4cae856aa8d46e3c5eef7 https://doi.org/10.1134/s2070205111070161 Zobrazit plný text záznamu Full text from SpringerLink