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Chloride free Pt‐ and PtRu‐ Nanoparticles Stabilised by “Armand's Ligand” as Precursors for Fuel Cell Catalysts
Author(s) -
Bönnemann H.,
Brinkmann R.,
Kinge S.,
Ely T. O.,
Armand M.
Publication year - 2004
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.200400041
Subject(s) - catalysis , methanol , chloride , chemistry , ligand (biochemistry) , nanoparticle , stripping (fiber) , fuel cells , inorganic chemistry , colloid , chemical engineering , materials science , organic chemistry , nanotechnology , biochemistry , receptor , engineering , composite material
Chloride residues on the surface of fuel cell catalysts are known to decrease the catalytic activity, especially for O 2 reduction. Using Armand's ligand, which contains the chloride free DCTA anion, for the colloidal stabilisation of nanoscopic Pt and PtRu catalysts precursors (< 2 nm size) leads to PEMFC and DMFC catalysts with improved activity compared to commercial E‐TEK catalysts as evidenced by both methanol oxidation and CO‐stripping voltametric studies.