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Catalyst Preparation by Electroless Plating and Hydrogen Direct Reduction Methods: Practical Application for a High Cell Performance PEFC
Author(s) -
Fujii T.,
Ito M.
Publication year - 2006
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.200500258
Subject(s) - catalysis , platinum , cyclic voltammetry , materials science , chemical engineering , electrolyte , plating (geology) , transmission electron microscopy , proton exchange membrane fuel cell , electroless plating , hydrogen , electrochemistry , nanotechnology , electrode , chemistry , electroplating , organic chemistry , layer (electronics) , geophysics , engineering , geology
High performance Pt catalysts for polymer electrolyte fuel cells (PEFCs) were prepared by both the electroless plating and hydrogen direct reduction methods. The catalysts were then characterized by cyclic voltammetry (CV), transmission electron microscopy (TEM), and cell performance testing. Both methods exhibited superior cell performance compared to the conventional impregnation preparation method. The catalysts that consisted of too many large platinum particles showed remarkably poor cell output compared to the catalysts with smaller platinum particles. Platinum particles less than 2 nm in diameter exhibited an excellent power density per unit of Pt catalyst loading.