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Temperature‐dependent Performances of a Fuel Cell Using a Superacid Zirconia‐doped Nafion Polymer Electrolyte
Author(s) -
Navarra M. A.,
Abbati C.,
Croce F.,
Scrosati B.
Publication year - 2009
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.200800066
Subject(s) - nafion , electrolyte , materials science , dielectric spectroscopy , membrane , chemical engineering , cubic zirconia , proton exchange membrane fuel cell , polymer , ohmic contact , composite material , chemistry , electrode , electrochemistry , ceramic , layer (electronics) , biochemistry , engineering
Sulphated zirconia‐added Nafion membranes were prepared and used as polymer electrolyte separators in H 2 ‐air fuel cells. The cell performances of the composite membrane were compared with those of an unmodified Nafion membrane having the same thickness. The cell response was studied by means of voltage–current dependence, in situ impedance spectroscopy and current interrupt‐based cell resistance. The effect of temperature on the cells behaviour was evaluated. When using the composite membrane as an electrolyte a general enhancement was found, both in terms of power density delivered and ohmic resistance. Moreover, the high‐temperature impedance response of the zirconia‐doped Nafion‐based cell was highly improved, showing a wellcontrolled charge transfer resistance.