Failure Analysis of Polymer Electrolyte Fuel Cells

Rama, Pratap; Chen, Rui; Andrews, John

doi:10.4271/2008-01-0634

Cited by 10 publications

(8 citation statements)

References 72 publications

(21 reference statements)

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“…Unfortunately, it was not possible to obtain experimental data on faults associated with FCs. Conversely, several methods for FC failure prediction were explored in the available literature, both stochastic [110,111] and neural network based [112,113]. Their usage is strictly connected to the achieving of instrument typical data through a long training phase.…”

Section: Research Highlightsmentioning

confidence: 99%

A Survey on Anomalies and Faults that may Impact the Reliability of Renewable-based Power Systems

Mariani,

Adinolfi,

Buonanno

et al. 2024

Preprint

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The decarbonization of the electricity grid as one among the actions to reduce fossil fuel emissions, and thus their impact on global warming in the future, will be achieved mainly via the integration and widespread diffusion of renewable power sources. This is going to be supported also by the shift from the paradigm production-transmission-distribution, where electricity production oversees large-size power plants, to renewable-based distributed/diffused production, where electricity is generated very close or even by the same (group of) user(s) (or prosumers in the latter case). The number of mid-/small-size installations based on renewable energy technologies will therefore increase substantially, and the related renewable generation will be dominant against that from large-size power plants. Unfortunately, this will reduce the reliability of the grid very likely, unless appropriate countermeasures are taken/implemented, hopefully at the same time the paradigm shift is being achieved. To this aim, it is important to identify the anomalies and main fault causes that might determine in renewable-based power systems. This paper surveys the current state-of-the-art on anomalies and faults affecting wind-PV-storage hybrid power systems, i.e., the main renewable technology ensemble that will establish the future grid, and highlights possible research directions that may help to fill the literature gaps.

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Section: Research Highlightsmentioning

confidence: 99%

A Survey on Anomalies and Faults that may Impact the Reliability of Renewable-based Power Systems

Mariani,

Adinolfi,

Buonanno

et al. 2024

Preprint

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“…The work classifies the sources of degradation to be associated with internal and external causes. Rama et al [9] developed an FMEA focussed on the five main causes of performance degradation in PEMFC:…”

Section: Classical Reliability Analysismentioning

confidence: 99%

Dynamic Reliability Assessment of PEM Fuel Cell Systems

Vasilyev

Andrews

Dunnett

et al. 2021

Reliability Engineering & System Safety

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“…This owes to the fact that thinner membranes imply a shorter transport path for water from cathode to anode, inherently mitigating electro-osmotic drag. However, thin membranes are more susceptible to failure due to the formation and propagation of pinholes [6]. For longevity, therefore, especially for applications where the load profile involves repeated stop-start cycles, it can be more favourable to opt for thicker membranes.…”

Section: Membrane Thicknessmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Flooding and dehydration can also precipitate degradation and failure mechanisms within cells through less obvious internal processes. However, these mechanisms can also be controlled if water management is better understood [6].A vast number of models have been published that describe the physical behaviour of water within a fuel cell [3,4]. Overall, these models can be classed according to the 'benchmark' approaches that they adopt to describe water transport.…”

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confidence: 99%

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Polymer Electrolyte Fuel Cell Transport Mechanisms: Simulation Study of Hydrogen Crossover and Water Content

Rama¹,

Liu²,

Chen³

2008

SAE Technical Paper Series

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• This is a conference paper, SAE Paper 2008-01-1802 [ c 2008. This paper is posted on this site with permission from SAE International. As a user of this site, you are permitted to view this paper on-line, and print one copy of this paper at no cost for your use only. This paper may not be copied, distributed or forwarded to others for further use without permission from SAE. This paper is also available from: Paper 2008-01-1802© 2008 This paper is posted on this site with permission from SAE International. As a user of this site, you are permitted to view this paper on-line, and print one copy of this paper at no cost for your use only. This paper may not be copied, distributed or forwarded to others for further use without permission from SAE.By mandate of the Engineering Meetings Board, this paper has been approved for SAE publication upon completion of a peer review process by a minimum of three (3) Positions and opinions advanced in this paper are those of the author(s) and not necessarily those of SAE. The author is solely responsible for the content of the paper. A process is available by which discussions will be printed with the paper if it is published in SAE Transactions.Persons wishing to submit papers to be considered for presentation or publication by SAE should send the manuscript or a 300 word abstract of a proposed manuscript to: Secretary, Engineering Meetings Board, SAE. Printed in USASAE Paper 2008-01-1802 © 2008 SAE International. This paper is posted on this site with permission from SAE International. As a user of this site, you are permitted to view this paper on-line, and print one copy of this paper at no cost for your use only. This paper may not be copied, distributed or forwarded to others for further use without permission from SAE. ABSTRACTHydrogen crossover and membrane hydration are significant issues for polymer electrolyte fuel cells (PEFC). Hydrogen crossover amounts to a quantity of unspent fuel, thereby reducing the fuel efficiency of the cell, but more significantly it also gives rise to the formation of hydrogen peroxide in the cathode catalyst layer which acts to irreversibly degenerate the polymer electrolyte. Membrane hydration not only strongly governs the performance of the cell, most noticeable through its effect on the ionic conductivity of the membrane, it also influences the onset and propagation of internal degradation and failure mechanisms that curtail the reliability and safety of PEFCs. This paper focuses on how hydrogen crossover and membrane hydration are affected by; (a) characteristic cell geometries, and (b) operating conditions relevant to automotive fuel cells. The numerical study is based on the application of a general transport equation developed previously to model multi-species transport through discontinuous materials. The results quantify (1) the effectiveness of different practical mechanisms which can be applied to curtail the effects of hydrogen crossover in automotive fuel cells and (2) the implications on water content within the membr...

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Failure Analysis of Polymer Electrolyte Fuel Cells

Cited by 10 publications

References 72 publications

A Survey on Anomalies and Faults that may Impact the Reliability of Renewable-based Power Systems

A Survey on Anomalies and Faults that may Impact the Reliability of Renewable-based Power Systems

Dynamic Reliability Assessment of PEM Fuel Cell Systems

Polymer Electrolyte Fuel Cell Transport Mechanisms: Simulation Study of Hydrogen Crossover and Water Content

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