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Effectiveness of PEMFC historical state and operating mode in PEMFC prognosis
International Journal of Hydrogen Energy, 2020Abstract As a high efficiency and environmental friendly energy conversion technique, proton exchange membrane fuel cell (PEMFC) system faces challenges of limited durability and performance decay during long-term operation. Prognosis estimates the remaining useful life (RUL) of the system, from which maintenance policy can be scheduled to extend its
Kai He, Qingbo He, Lisa Jackson
exaly +2 more sources
Functionalised Polybenzimidazoles for PEMFC
ECS Meeting Abstracts, 2008Abstract not Available.
Péron, Jennifer +4 more
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Materials Science Forum, 2007
In this paper reactions having strong influence on the lifetime of PEMFCs are described. These lifetime limiting reactions are related to the catalyst (increase of the particle size, catalyst dissolution, oxidation of the carbon catalyst support, catalyst deactivation by contaminants), to the membrane (degradation, loss of membrane humidification ...
Ludwig Jörissen +3 more
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In this paper reactions having strong influence on the lifetime of PEMFCs are described. These lifetime limiting reactions are related to the catalyst (increase of the particle size, catalyst dissolution, oxidation of the carbon catalyst support, catalyst deactivation by contaminants), to the membrane (degradation, loss of membrane humidification ...
Ludwig Jörissen +3 more
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Modeling of H2O2 Formation in PEMFCs
ECS Meeting Abstracts, 2008Abstract not Available.
Cheng Chen, Thomas F. Fuller
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2D modeling of a defective PEMFC
International Journal of Hydrogen Energy, 2011A dysfunctioning of the heart of the fuel cell might affect the whole system, and thus the demand of electric power. To be able to estimate the damage of the fuel cell, the default has to be detected precisely. As it is well known, the physico-chemical processes involved in proton exchange membrane fuel cell (PEMFC) are strongly coupled, as such that ...
Hinaje, Melika +5 more
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On Flow Maldistribution in PEMFC Stacks
International Journal of Green Energy, 2011Polymer electrolyte membrane fuel cell (PEMFC) stacks are widely studied for their own advantages. The flow maldistribution in unit cells may severely influence the fuel cell stack performance, mainly including the uniformity of current density and the voltage.
J. Wang, J. Yan, J. Yuan, B.Sunden
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Composite Proton‐Conducting Membranes for PEMFCs
Fuel Cells, 2007AbstractComposite membranes are of interest for PEMFCs and DMFCs. This paper describes a basic study of the influence of silica on the proton conductivity: (i) added as a filler to poly(vinylidene fluoride‐hexafluoropropylene) and poly(benzimidazole)‐based membranes activated with H3PO4, or (ii) included in the matrix of class II hybrids based on ...
Mustarelli, P +6 more
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Journal of Power Sources, 2006
Abstract The transient behavior of a proton exchange membrane fuel cell (PEMFC) with porosity is investigated in this study using a two-phase, half-cell model. The thin film agglomerate approach is used to model the catalyst layer. Both vapor transport and liquid water transport in the PEMFC are examined in this study. Proton transport is much faster
Shih-Ming Chang, Hsin-Sen Chu
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Abstract The transient behavior of a proton exchange membrane fuel cell (PEMFC) with porosity is investigated in this study using a two-phase, half-cell model. The thin film agglomerate approach is used to model the catalyst layer. Both vapor transport and liquid water transport in the PEMFC are examined in this study. Proton transport is much faster
Shih-Ming Chang, Hsin-Sen Chu
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Behavior of PEMFC in starvation
Journal of Power Sources, 2006Starvation is a vivid word to describe the operation condition of a fuel cell in sub-stoichiometric reactants feeding. In starvation, a fuel cell could not present its best performance; moreover, there might also be safety issue because of cell reversal.
Zhixiang Liu +5 more
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Journal of Fuel Cell Science and Technology, 2014
Proton exchange membrane fuel cells (PEMFCs) have many advantages among the various types of fuel cells, such as high energy density, low temperature operation, near-zero pollution, and quick starting. Thereby, PEMFCs have been considered as the most promising alternative power sources in the transportation and stationary fields.
C. A. C. Sequeira, L. Amaral
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Proton exchange membrane fuel cells (PEMFCs) have many advantages among the various types of fuel cells, such as high energy density, low temperature operation, near-zero pollution, and quick starting. Thereby, PEMFCs have been considered as the most promising alternative power sources in the transportation and stationary fields.
C. A. C. Sequeira, L. Amaral
openaire +1 more source