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On the Structure of Carbon‐Supported Selenium‐Modified Ruthenium Nanoparticles as Electrocatalysts for Oxygen Reduction in Fuel Cells
Author(s) -
Zehl Gerald,
Schmithals Gerrit,
Hoell Armin,
Haas Sylvio,
Hartnig Christoph,
Dorbandt Iris,
Bogdanoff Peter,
Fiechter Sebastian
Publication year - 2007
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200701473
Subject(s) - ruthenium , nanoparticle , carbon black , platinum , carbon fibers , oxygen reduction , selenium , methanol , materials science , platinum nanoparticles , oxygen , chemical engineering , inorganic chemistry , catalysis , annealing (glass) , chemistry , nanotechnology , electrochemistry , electrode , organic chemistry , metallurgy , composite material , natural rubber , composite number , engineering
Particles on particles on particles : RuSe x O y electrocatalysts with a cluster‐like distribution of selenium on the surface of carbon‐black‐supported ruthenium nanoparticles are suitable replacements for platinum at the cathode side of methanol fuel cells. Carbon‐supported RuSe x O y nanoparticles are not completely covered by Se after reductive annealing at 800 °C; rather, Se clusters form on the Ru nanoparticles, while the rest of the surface is covered by oxygen.