Membranes for Low Temperature Fuel Cells

Sharma, Surbhi

doi:10.1515/9783110647327

Cited by 3 publications

(2 citation statements)

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“…Excessive water can lead to floods, while water shortages can also lead to dryness. None of these are acceptable since they influence PEM fuel cell performance on the polarization curve [24].…”

Section: Water Transportationmentioning

confidence: 99%

Water Management for of Proton Exchange Membrane Fuel Cells Marketing and Sensitive Balance

I Hassan

2022

IJNMRS

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Electromembrane processes are a significant component of electrochemical technology. Now it is well accepted that the performance and durability of proton exchange membrane fuel cells (PEMFCs) are inextricably linked to the buildup and transit of water inside their porous components, notably the gas diffusion layer (GDL) and microporous layer. In this paper, the electroosmotic drag in membranes and water management which is the chief difficulty facing the membrane are discussed and a review of the mechanism of transport and membrane water transport with sorption/desorption are presented.

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Section: Water Transportationmentioning

confidence: 99%

Water Management for of Proton Exchange Membrane Fuel Cells Marketing and Sensitive Balance

I Hassan

2022

IJNMRS

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“…In recent years, high-manganese austenitic steels have received considerable interest as structural materials at cryogenic temperatures [1][2][3][4]. Because of their relatively low cost, excellent work-hardening ability, high ultimate tensile strength, and high uniform elongation compared with 9% Ni steel [5], austenite stainless steel [6][7][8], and medium-/highentropy alloys [9,10], high-manganese steels have become promising candidate materials for liquified gas storage and transportation, ice breakers, and outer-space exploration [2,11].…”

Section: Introductionmentioning

confidence: 99%

Dependence of Charpy Impact Properties of Fe-30Mn-0.05C Steel on Microstructure

Xiong

Kong

et al. 2023

Crystals

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Fe-30Mn-0.05C steel specimens with cold-rolled, partially recrystallized, fine-grained, and coarse-grained microstructures were fabricated by means of 80% cold rolling followed by annealing at 550–1000 °C. The initial and deformed microstructures were characterized, and the Charpy impact properties were tested at room temperature (RT) and liquid nitrogen temperature (LNT). It was found that the Charpy absorbed energy increased with the annealing temperature, while the specimens showed different trends: parabolic increase at RT and exponential increase at LNT, respectively. Compared with the fully recrystallized specimens, those with a partially recrystallized microstructure exhibited lower impact energy, especially at LNT. This was because cracks tended to nucleate and propagate along the recovery microstructure where stress concentration existed. The grain size played an important role in the twinning behavior and impact properties. High Charpy impact energy (~320 J) was obtained in the coarse-grained specimen having the grain size of 42.1 μm at both RT and LNT, which was attributed to the activation of high-density deformation twinning. However, deformation twinning was inhibited in the specimen with the average grain size of 3.1 μm, resulting in limited work hardening and lower impact energy.

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A Critical Assessment on Functional Attributes and Degradation Mechanism of Membrane Electrode Assembly Components in Direct Methanol Fuel Cells

2021

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Direct methanol fuel cells (DMFC) are typically a subset of polymer electrolyte membrane fuel cells (PEMFC) that possess benefits such as fuel flexibility, reduction in plant balance, and benign operation. Due to their benefits, DMFCs could play a substantial role in the future, specifically in replacing Li-ion batteries for portable and military applications. However, the critical concern with DMFCs is the degradation and inadequate reliability that affect the overall value chain and can potentially impede the commercialization of DMFCs. As a consequence, a reliability assessment can provide more insight into a DMFC component’s attributes. The membrane electrode assembly (MEA) is the integral component of the DMFC stack. A comprehensive understanding of its functional attributes and degradation mechanism plays a significant role in its commercialization. The methanol crossover through the membrane, carbon monoxide poisoning, high anode polarization by methanol oxidation, and operating parameters such as temperature, humidity, and others are significant contributions to MEA degradation. In addition, inadequate reliability of the MEA impacts the failure mechanism of DMFC, resulting in poor efficiency. Consequently, this paper provides a comprehensive assessment of several factors leading to the MEA degradation mechanism in order to develop a holistic understanding.

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Membranes for Low Temperature Fuel Cells

Cited by 3 publications

References 0 publications

Water Management for of Proton Exchange Membrane Fuel Cells Marketing and Sensitive Balance

Water Management for of Proton Exchange Membrane Fuel Cells Marketing and Sensitive Balance

Dependence of Charpy Impact Properties of Fe-30Mn-0.05C Steel on Microstructure

A Critical Assessment on Functional Attributes and Degradation Mechanism of Membrane Electrode Assembly Components in Direct Methanol Fuel Cells

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