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A comparison of operating strategies to reduce DMFC degradation
Author(s) -
Bresciani F.,
Casalegno A.,
Bonde J. L.,
Odgaard M.,
Marchesi R.
Publication year - 2014
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.3115
Subject(s) - degradation (telecommunications) , commercialization , direct methanol fuel cell , cathode , work (physics) , environmental science , automotive engineering , reliability engineering , process engineering , computer science , engineering , electrical engineering , chemistry , mechanical engineering , business , anode , electrode , marketing
SUMMARY Degradation is one of the most critical issues that hinder the commercialization of fuel cells. The experimental investigations of direct methanol fuel cell degradation are complicated by the presence of a temporary contribution that can be recovered adopting suitable operating strategies. In the present work, a methodology to distinguish temporary and permanent degradation is proposed. The capability of different operating strategies to mitigate temporary degradation is evaluated. A strategy, consisting in refresh cycles involving open circuit voltage and cathode air interruption, able to minimize temporary degradation and reduce permanent degradation, is identified and compared with steady‐state operation. Copyright © 2013 John Wiley & Sons, Ltd.