Enhancement of CO Tolerance on Electrodeposited Pt Anode for Micro-PEM Fuel Cells


          

刊名：Fuel Cells
作者：J. Y. Joo（Department of Environmental Science and Engineering, Electrochemical Reaction and Technology Laboratory (ERTL)）
J. K. Lee（Department of Environmental Science and Engineering, Electrochemical Reaction and Technology Laboratory (ERTL)）
Y. Kwon（Department of Environmental Science and Engineering, Electrochemical Reaction and Technology Laboratory (ERTL)）
C. R. Jung（Samsung Electro-MechanicsCo., Ltd.）
E. S. Lee（Samsung Electro-MechanicsCo., Ltd.）
J. H. Jang（Samsung Electro-MechanicsCo., Ltd.）
H. J. Lee（Department of Chemistry, Kyungpook National University）
S. Uhm（Department of Environmental Science and Engineering, Electrochemical Reaction and Technology Laboratory (ERTL)）
J. Lee（Department of Environmental Science and Engineering, Electrochemical Reaction and Technology Laboratory (ERTL)）
刊号：813E0001
出版年：2010
年卷期：2010, vol.10, no.6
页码：926-931
总页数：6
分类号：TQ15
关键词：CO Tolerant Anode；Electrodeposited Pt；Particle Size Effect；PEM Fuel Cells；Recovery Test
参考中译：
语种：eng
文摘：Electrodeposited and sprayed Pt anode catalysts were electrochemically characterised by CO stripping voltammetry as well as their activity to CO tolerance in micro-PEMFCs was demonstrated using polarisation measurements. While the onset and peak potentials of CO oxidation on the sprayed Pt/C varied with the CO coverage, these were lower (～50 mV) with the electrodeposited Pt anode. This difference is attributed to the varying properties of the Pt-OH on either rough or smooth surface mainly created from different sizes of Pt particles. In fuel cell performance test, the electrodeposited Pt anode showed maximum power density of 360 mW cm~(-2) and it was markedly (～110 mW cm~(-2)) higher than the sprayed Pt/C anode. The enhanced activity of the electrodeposited Pt anode is also reflected by the fact that the entire amount of adsorbed CO becomes almost desorbed during the first three polarisation scans, while with the Pt/C anode at least five cycles are required.



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