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A semi‐empirical cell voltage model for polymer electrolyte/methanol systems: Applicability of the group contribution method
Author(s) -
Seong Ji Yun,
Bae Young Chan
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.28794
Subject(s) - methanol , direct methanol fuel cell , electrolyte , polymer , voltage , methanol fuel , cell voltage , materials science , chemical engineering , current density , chemistry , thermodynamics , analytical chemistry (journal) , polymer chemistry , chromatography , organic chemistry , composite material , engineering , physics , electrical engineering , electrode , anode , quantum mechanics
A new group contribution model is established to describe the cell voltage of a direct methanol fuel cell as a function of the current density. The model equation is validated with experimental data over a wide range of methanol concentrations and temperatures. The proposed model focuses on very unfavorable conditions for cell operation, that is, low methanol solution concentrations and relatively low cell temperatures. The proposed group contribution method includes a methanol crossover effect that plays a major role in determining the cell voltage of a direct methanol fuel cell. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008