Journal ArticleDOI
Material aspects of the liquid feed direct methanol fuel cell
TLDR
In this paper, a small scale Liquid Feed Direct Methanol Fuel Cell (LFDMFC) based on solid polymer electrolyte membrane is reported, where two flow cell designs, one with a parallel flow channel arrangement and the other with a spot design of flow bed, are used.Abstract:
A study of a small scale Liquid Feed Direct Methanol Fuel Cell (LFDMFC), based on solid polymer electrolyte membrane, is reported. Two flow cell designs, one with a parallel flow channel arrangement and the other with a spot design of flow bed, are used. The structure of the DMFC comprises a composite of two porous electrocatalytic electrodes; Pt–Ru–carbon catalyst anode and Pt–carbon catalyst cathode, on either side of a solid polymer electrolyte (SPE) membrane. The performance of three Pt–Ru catalysts is compared. The influence of the degree of Teflon loading on the electrode structure is also reported. The effect of the following parameters: cell temperature, oxygen gas or air pressure, methanol liquid flow rate and methanol concentration on the power performance is described.read more
Citations
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Journal ArticleDOI
Analysis of electrocatalyst degradation in PEMFC caused by cell reversal during fuel starvation
TL;DR: In this paper, the damage caused by cell reversal during proton exchange membrane fuel cell (PEMFC) operation with fuel starvation was investigated by a single cell experiment and the samples from degraded membrane-electrode assemblies (MEAs) were characterized.
Journal ArticleDOI
Platinum dissolution and deposition in the polymer electrolyte membrane of a PEM fuel cell as studied by potential cycling
TL;DR: The behavior of platinum dissolution and deposition in the polymer electrolyte membrane of a membrane-electrode-assembly for a proton-exchange membrane fuel cell was studied and the electrochemically active surface area decreased depending on the cycle number and the upper potential limit.
Journal ArticleDOI
New membranes for direct methanol fuel cells
TL;DR: In this paper, a thin-film-based membrane electrode assembly (MEAs) was used for H2 PEM fuel cells with a rather high catalyst loading in order to minimize the effects of limited catalyst utilization due to flooding conditions at both electrodes.
Journal ArticleDOI
Mass transport phenomena in direct methanol fuel cells
TL;DR: In this article, the authors present a comprehensive review of the state-of-the-art studies of mass transport of different species, including the reactants (methanol, oxygen and water) and the products (water and carbon dioxide) in DMFCs.
Journal ArticleDOI
Dynamics of the direct methanol fuel cell (DMFC): experiments and model-based analysis
Kai Sundmacher,Kai Sundmacher,Thorsten Schultz,Su Zhou,Keith Scott,Martin Ginkel,Ernst Dieter Gilles +6 more
TL;DR: In this paper, a laboratory-scale liquid-feed direct methanol fuel cell (DMFC) was operated with different feed strategies and the observed fuel cell behavior was analyzed with a mathematical model which consists of anode mass balances, charge balances of both electrodes and electrode kinetic expressions.
References
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Journal ArticleDOI
Effect of Methanol Crossover in a Liquid‐Feed Polymer‐Electrolyte Direct Methanol Fuel Cell
TL;DR: In this paper, the performance of a liquid-feed direct methanol fuel cell employing a proton exchange membrane electrolyte with Pt-Ru/C as anode and Pt-C as cathode is reported.
Journal ArticleDOI
Advances in direct oxidation methanol fuel cells
S. Surampudi,Sekharipuram R. Narayanan,Eugene Vamos,H. Frank,G. Halpert,Anthony B. Laconti,J. Kosek,G. K. Surya Prakash,G. A. Olah +8 more
TL;DR: In this paper, a liquid feed direct methanol fuel cell has been developed based on a proton exchange membrane electrolyte and Pt/Ru and Pt catalyzed fuel and air/O2 electrodes, respectively.
Journal ArticleDOI
The degree and effect of methanol crossover in the direct methanol fuel cell
J. Cruickshank,Keith Scott +1 more
TL;DR: In this article, a simple model is presented to describe the permeation of methanol from the anode to the cathode in direct methanoline fuel cell (DMFC).
Journal ArticleDOI
Polymer electrolyte fuel cells: a review of recent developments
TL;DR: In this article, a review summarizes the operating principles of the fuel cell stack and power systems, describes the current status of the technology, focusing on recent developments, and discusses the technical challenges and commercial prospectis for this fuel cell technology.