Journal ArticleDOI
Polymer Electrolyte Fuel Cell Model
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TLDR
In this paper, an isothermal, one-dimensional, steady-state model for a complete polymer electrolyte fuel cell (PEFC) with a 117 Nation | membrane is presented, which predicts an increase in membrane resistance with increased current density and demonstrates the great advantage of a thinner membrane in alleviating this resistance problem.Abstract:
We present here an isothermal, one-dimensional, steady-state model for a complete polymer electrolyte fuel cell (PEFC) with a 117 Nation | membrane. In this model we employ water diffusion coefficients electro-osmotic drag coefficients, water sorption isotherms, and membrane conductivities, all measured in our laboratory as functions of membrane water content. The model pre.dicts a net-water-per-proton flux ratio of 0.2 H20/H § under typical operating conditions, which is much less than the measured electro-osmotic drag coefficient for a fully hydrated membrane. It also predicts an increase in membrane resistance with increased current density and demonstrates the great advantage of a thinner membrane in alleviating this resistance problem. Both of these predictions were verified experimentally under certain conditions.read more
Citations
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Journal ArticleDOI
A parametric study of PEM fuel cell performances
TL;DR: In this paper, the effects of different operating parameters on the performance of PEM fuel cells have been studied experimentally using pure hydrogen on the anode side and air on the cathode side.
Journal ArticleDOI
Visualization of water buildup in the cathode of a transparent PEM fuel cell
TL;DR: In this article, two-phase flow and transport of reactants and products in the cathode of a transparent proton exchange membrane fuel cell (PEMFC) are studied experimentally.
Journal ArticleDOI
The Water Content Dependence of Electro-Osmotic Drag in Proton-Conducting Polymer Electrolytes
TL;DR: In this paper, the water transport numbers for protons in a variety of available poly (perfluorosulfonic acid) membranes are presented as a function of water content, and it is shown that, for membranes equilibrated with water vapor over a wide range of activities, a water drag coefficient of unity is observed.
Journal ArticleDOI
Mathematical modeling of proton exchange membrane fuel cells
Andrew Rowe,Xianguo Li +1 more
TL;DR: In this paper, a one-dimensional non-isothermal model of a proton exchange membrane (PEM) fuel cell has been developed to investigate the effect of various design and operating conditions on the cell performance, thermal response and water management.
Journal ArticleDOI
Quantum jumps in the PEMFC science and technology from the 1960s to the year 2000 ☆: Part II. Engineering, technology development and application aspects
TL;DR: In this article, the authors highlight the most important technological progresses in the areas of water and thermal management, scale-up from single cells to cell stacks, bipolar plates and flow fields, and fuel processing.
References
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Electrode materials and processes for energy conversion and storage
TL;DR: In this article, Monte Carlo simulation of the electrochemical faceting mechanism is used to simulate the faceting mechanisms of fuel cells, and an analysis and interpretation of AC impedance data for porous electrodes for extraterrestrial and terrestrial applications.
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