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Comparative Studies of Methanol Crossover and Cell Performance for a DMFC
Journal of The Electrochemical Society, 2004Fuel (methanol) crossover through the polymeric electrolyte membrane in a single direct methanol fuel cell (DMFC) was determined by monitoring the amount of CO 2 produced from methanol oxidation. Instead of measuring CO 2 from only the cathode by a conventional method, the amounts of CO 2 at both of the cathode and the anode were determined in the ...
Rongzhong Jiang, Deryn Chu
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Methanol and Water Crossover in a Passive Direct Methanol Fuel Cell: Mathematical Model
2016Methanol crossover and water crossover within the polymer electrolyte membrane of a passive direct methanol fuel cell (DMFC) has been analyzed in the present study. A non-isothermal mathematical model has been developed. The model incorporates methanol, water and oxygen transport phenomena along with electrochemical reactions occurring in the DMFC. The
Naveen Shrivastava +3 more
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Semi-empirical model to elucidate the effect of methanol crossover on direct methanol fuel cell
Journal of Power Sources, 2006A semi-empirical equation was proposed to simulate the behavior of a direct methanol fuel cell (DMFC). The individual voltage losses in a DMFC due to methanol crossover and the overpotentials of both the cathode and anode can be distinguished. Three sets of experiments were designed and carried out to account for the three voltage losses. The values of
Hung-Chi Tu +3 more
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Real‐Time Mass Spectrometric Study of the Methanol Crossover in a Direct Methanol Fuel Cell
Journal of The Electrochemical Society, 1996The products of methanol crossover through the acid‐doped polybenzimidazole polymer electrolyte membrane (PBI PEM) to the cathode of a prototype direct methanol fuel cell (DMFC) were analyzed using multipurpose electrochemical mass spectrometry (MPEMS) coupled to the cathode exhaust gas outlet. It was found that the methanol crossing over reacts almost
J.‐T. Wang, S. Wasmus, R. F. Savinell
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Journal of Power Sources, 2007
Abstract An algebraic one-dimensional model on the membrane-electrode-assembly (MEA) of direct methanol fuel cell (DMFC) is proposed. Non-linear regression procedure was imposed on the model to retrieve important parameters: solid polymer electrolyte conductivity κ m , exchange current density of methanol electro-oxidation at anode catalyst surface
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Abstract An algebraic one-dimensional model on the membrane-electrode-assembly (MEA) of direct methanol fuel cell (DMFC) is proposed. Non-linear regression procedure was imposed on the model to retrieve important parameters: solid polymer electrolyte conductivity κ m , exchange current density of methanol electro-oxidation at anode catalyst surface
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Nanocomposite Polymer Electrolyte Membranes: Methanol Crossover and Conductivity [PDF]
, 2005 Commercial Nafion® 117 membranes were successfully modified by in-situ reactions (sol-gel of TEOS and/or polymerization of aniline) within Nafion structures. Water-methanol permeability and proton conductivity were investigated in order to determine the potential performance of these membranes for DMFC systems.
Garnica Rodriguez, J. I. +3 more
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DMFC with circulating electrolyte to prevent methanol crossover
Fuel Cells Bulletin, 2001openaire +1 more source
DMFC membrane modification to reduce methanol crossover
Fuel Cells Bulletin, 2001openaire +1 more source