Premium
Applying Shape‐Controlled Pt Nano‐dendrites Supported on Carbon for Membrane‐Electrode Assembly in a Proton Exchange Membrane Fuel Cell
Author(s) -
Kim C.,
Lee H.
Publication year - 2013
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.201300058
Subject(s) - proton exchange membrane fuel cell , overpotential , materials science , cathode , electrode , catalysis , chemical engineering , membrane , mass transfer , membrane electrode assembly , platinum , ohmic contact , nanotechnology , chemistry , electrochemistry , anode , chromatography , organic chemistry , layer (electronics) , engineering , biochemistry
Platinum nano‐dendrites of various sizes were applied as cathode catalysts in a proton exchange membrane fuel cell (PEMFC). The membrane electrode assembly (MEA) fabricated with Pt nano‐dendrites showed very high ORR activity at high potential ranges due to lower activation overpotential. But it showed the cell performance only comparable to commercial Pt/C due to Ohmic and mass transfer resistance at high current density ranges. These results demonstrate that both high intrinsic activity of the catalysts and the formation of three‐phase interface with efficient proton, electron, and mass transfer should be considered together when shape‐controlled metal nanoparticles are used as cathode catalysts in a PEMFC.