Durability and characterization studies of polymer electrolyte membrane fuel cell’s coated aluminum bipolar plates and membrane electrode assembly

Hung, Yue; Tawfik, Hazem; Mahajan, Devinder

doi:10.1016/j.jpowsour.2008.09.079

Cited by 37 publications

(23 citation statements)

References 17 publications

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“…Their 1000 h fuel cell testing showed no significant power degradation due to corrosion, and the modified coated Al bipolar plates behaved better than graphite in power output [93][94][95]. The carbide-based coating showed good durability in a fuel cell stack environment confirmed by the polarisation curves before and after a 1000 h stack test [93][94][95]. Moreover, their recent cost diagram illustrated that the cost of the modified Al plates could be lower than graphite in a few years of operation [94].…”

Section: Light Alloysmentioning

confidence: 99%

“…In their 1500 h stack operation, the initial performance of the fuel cell stack with treated Al bipolar plate was better than that with graphite plate, though a little output degradation was seen with the former [92]. Their 1000 h fuel cell testing showed no significant power degradation due to corrosion, and the modified coated Al bipolar plates behaved better than graphite in power output [93][94][95]. The carbide-based coating showed good durability in a fuel cell stack environment confirmed by the polarisation curves before and after a 1000 h stack test [93][94][95].…”

Section: Light Alloysmentioning

confidence: 99%

“…Similar to the application on SSs, some conductive polymers were also tried to coat Alalloy for PEMFC bipolar plate application [91]. Tawfik and co-workers [92][93][94][95] have developed a carbidebased amorphous alloy coating for Al alloy. In their 1500 h stack operation, the initial performance of the fuel cell stack with treated Al bipolar plate was better than that with graphite plate, though a little output degradation was seen with the former [92].…”

Section: Light Alloysmentioning

confidence: 99%

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Reviewing Metallic PEMFC Bipolar Plates

2010

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A bipolar plate is one of the most important components in a polymer exchange membrane fuel cell (PEMFC) stack and has multiple functions. Metallic bipolar plate candidates have advantages over composite rivals in excellent electrical and thermal conductivity, good mechanical strength, high chemical stability, very wide alloy choices, low cost and, most importantly, existing pathways for high‐volume, high‐speed mass production. The challenges with metallic bipolar plates are the higher contact resistance and possible corrosion products, which may contaminate the membrane electrode assembly. This review evaluates the candidate metallic and coating materials for bipolar plates and gives the perspective of the research trends.

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Section: Light Alloysmentioning

confidence: 99%

Section: Light Alloysmentioning

confidence: 99%

Section: Light Alloysmentioning

confidence: 99%

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Reviewing Metallic PEMFC Bipolar Plates

2010

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“…This is probably expected as measurements were carried out under different operating conditions and for different fuel cell component designs. Furthermore, some durability measurements [35][36][37][38][39][40][41][42] were made of individual components rather than of the complete cell unit. Thus, the effect of degradation on the neighbouring components which consequently affects the life-time of the entire cell will not be represented.…”

Section: Technology Development Organisation (Nedo) and The Europeanmentioning

confidence: 99%

“…The origin of these cations could be the dissolution of the alloys used as coating material for the plates. Using mass spectroscopy techniques, traces of chromium, nickel, iron, sulphur and aluminium from the by-product water were detected after operating the cell with aluminium plates coated with carbide-based alloy [260]. Their energy dispersive X-ray (EDX) analysis revealed more changes in Ni at the cathode than the anode which was attributed to the higher relative humidity as well as the electrochemical activity of the cathode.…”

Section: Corrosionmentioning

confidence: 99%

Degradation aspects of water formation and transport in Proton Exchange Membrane Fuel Cell: A review

Ous

Arcoumanis

2013

Journal of Power Sources

137

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent repository link AbstractThis review paper summarises the key aspects of Proton Exchange Membrane Fuel Cell (PEMFC) degradation that are associated with water formation, retention, accumulation, and transport mechanisms within the cell. Issues related to loss of active surface area of the catalyst, ionomer dissolution, membrane swelling, ice formation, corrosion, and contamination are also addressed and discussed. The impact of each of these water mechanisms on cell performance and durability was found to be different and to vary according to the design of the cell and its operating conditions. For example, the presence of liquid water within Membrane Electrode Assembly (MEA), as a result of water accumulation, can be detrimental if the operating temperature of the cell drops to sub-freezing.The volume expansion of liquid water due to ice formation can damage the morphology of different parts of the cell and may shorten its life-time. This can be more serious, for example, during the water transport mechanism where migration of Pt particles from the catalyst may take place after detachment from the carbon support. Furthermore, the effect of transport mechanism could be augmented if humid reactant gases containing impurities poison the membrane, leading to the same outcome as water retention or accumulation.Overall, the impact of water mechanisms can be classified as aging or catastrophic. Aging has a longterm impact over the duration of the PEMFC life-time whereas in the catastrophic mechanism the impact is immediate. The conversion of cell residual water into ice at sub-freezing temperatures by the water retention/ accumulation mechanism and the access of poisoning contaminants through the water transport mechanism are considered to fall into the catastrophic category. The effect of water mechanisms on PEMFC degradation can be reduced or even eliminated by (a) using advanced materials for improving the electrical, chemical and mechanical stability of the cell components against deterioration, and (b) implementing effective strategies for water management in the cell.

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Materials and Coatings for Metallic Bipolar Plates in Polymer Electrolyte Membrane Fuel Cells

Turner

2012

Fuel Cell Science and Engineering

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Durability and characterization studies of polymer electrolyte membrane fuel cell’s coated aluminum bipolar plates and membrane electrode assembly

Cited by 37 publications

References 17 publications

Reviewing Metallic PEMFC Bipolar Plates

Reviewing Metallic PEMFC Bipolar Plates

Degradation aspects of water formation and transport in Proton Exchange Membrane Fuel Cell: A review

Materials and Coatings for Metallic Bipolar Plates in Polymer Electrolyte Membrane Fuel Cells

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