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Progress in DMFC Development Using the Dry Spraying Preparation Technique
Author(s) -
Gülzow E.,
Reissner R.,
Weisshaar S.,
Kaz T.
Publication year - 2003
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.200320234
Subject(s) - anode , cathode , materials science , nafion , direct methanol fuel cell , stoichiometry , chemical engineering , membrane electrode assembly , power density , electrode , current density , layer (electronics) , methanol , current collector , composite material , chemistry , power (physics) , electrochemistry , organic chemistry , physics , quantum mechanics , electrolyte , engineering
Abstract A dry MEA (membrane electrode assembly) preparation technique developed at DLR was applied to DMFC (direct methanol fuel cell) MEAs using different preparation parameters. It turned out that for cathode and anode backings with high hydrophobicity the high current density performance of the MEA at low cathode airflow and thus low stoichiometry is better than for backings with low hydrophobicity. The anode reaction layer does not need to contain Nafion™. It has been demonstrated that at catalyst loadings similar to or lower than generally reported, power densities of technical interest are within reach.