Premium
Membrane Fuel Cell Cathode Catalysts Based on Titanium Oxide Supported Platinum Nanoparticles
Author(s) -
Gebauer Christian,
Jusys Zeas,
Wassner Maximilian,
Hüsing Nicola,
Behm R. Jürgen
Publication year - 2014
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201402019
Subject(s) - catalysis , platinum nanoparticles , proton exchange membrane fuel cell , platinum , materials science , nanoparticle , electrochemistry , inorganic chemistry , electrolyte , chemical engineering , catalyst support , oxide , x ray photoelectron spectroscopy , ethylene glycol , electrocatalyst , electrode , chemistry , nanotechnology , organic chemistry , engineering , metallurgy
The potential of platinum catalysts supported on pure, nitrogen‐, or carbon‐doped titania for application in the oxygen reduction reaction (ORR), as a cathode catalyst in polymer electrolyte membrane fuel cells, is investigated. The oxide supports are synthesized by using a sol–gel route. Modification with nitrogen and carbon doping is achieved by thermal decomposition of urea and the structure‐directing agent P123. Platinum nanoparticles are prepared by reduction of a Pt IV salt in ethylene glycol and subsequently immobilized on different support materials. Structural and electronic properties of the support materials and the resulting catalysts are characterized by various methods, including X‐ray diffraction, transmission electron microscopy, and X‐ray photoelectron spectroscopy. These results and electrochemical characterization of the support materials and platinum nanoparticle catalysts indicate distinct support effects in the catalysts. The electrocatalytic performance of these catalysts in the ORR, as determined in rotating ring disc electrode measurements, is promising. Also here, distinct support effects can be identified. Correlations with the structural/electronic and the electrochemical properties are discussed, as well as the role of metal–support interactions.