Enhanced electrocatalytic activity and stability of PdCo@Pt core–shell nanoparticles for oxygen reduction reaction

Autor:	Da-Hee Kwak, Bumwook Roh, Kyung-Won Park, Young-Woo Lee, Ah-Reum Park, Inchul Hwang
Rok vydání:	2014
Předmět:	Nanostructure Chemistry General Chemical Engineering Inorganic chemistry Materials Chemistry Electrochemistry Shell (structure) Nanoparticle Particle size Electrocatalyst Kinetic energy Current density
Zdroj:	Journal of Applied Electrochemistry. 44:1219-1223
ISSN:	1572-8838 0021-891X
DOI:	10.1007/s10800-014-0738-3
Popis:	The carbon-supported PdCo@Pt core–shell nanoparticles for an oxygen reduction reaction (ORR) were prepared via a two-step process at room temperature. The as-prepared PdCo@Pt/C with an average particle size of ~3.5 nm exhibited a well-defined nanostructure consisting of Pd-rich core and Pt shell formed by displacing Co core with Pt. Compared to pure Pt, PdCo@Pt/C showed a higher current density in the kinetic controlled region and more positive half-wave potential for the ORR. In a cycling stability test of the PdCo@Pt/C electrocatalyst, no remarkable activity loss was seen.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6d14999ab8ffbc26c4cc65a1ec6ca120 https://doi.org/10.1007/s10800-014-0738-3 Zobrazit plný text záznamu Plný text ve formátu PDF