On the “Fuel Cell” Working at Moderately High Temperature. I

Abstract Kubota alloys HK40 and HK50 are austenitic Fe-Cr-Ni alloys that have been standard heat-resistant materials for more than four decades. With moderately high temperature strength, oxidation resistance, and carburization resistance the alloys are used in a wide variety of industrial applications. HK 50 has slightly higher carbon content. This datasheet provides information on composition, physical properties, and tensile properties as well as creep. It also includes information on casting, heat treating, machining, and joining. Filing Code: SS-998. Producer or source: Kubota Metal Corporation, Fahramet Division.

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The impact of flow field plate misalignment on the gas diffusion layer intrusion and performance of a high-temperature polymer electrolyte fuel cell

Journal of Power Sources ◽

10.1016/j.jpowsour.2021.230036 ◽

2021 ◽

Vol 501 ◽

pp. 230036

Author(s):

Eugen Hoppe ◽

Holger Janßen ◽

Martin Müller ◽

Werner Lehnert

Keyword(s):

High Temperature ◽

Fuel Cell ◽

Flow Field ◽

Polymer Electrolyte ◽

Diffusion Layer ◽

Gas Diffusion ◽

Polymer Electrolyte Fuel Cell ◽

Field Plate ◽

And Performance ◽

The Impact

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High temperature polymer electrolyte membrane fuel cell degradation provoked by ammonia as ambient air contaminant

Journal of Power Sources ◽

10.1016/j.jpowsour.2021.229993 ◽

2021 ◽

Vol 502 ◽

pp. 229993

Author(s):

Dana Schonvogel ◽

Julian Büsselmann ◽

Henrike Schmies ◽

Hendrik Langnickel ◽

Peter Wagner ◽

...

Keyword(s):

High Temperature ◽

Fuel Cell ◽

Polymer Electrolyte ◽

Polymer Electrolyte Membrane ◽

Ambient Air ◽

Electrolyte Membrane ◽

Air Contaminant

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Bi-Functional Composting the Sulfonic Acid Based Proton Exchange Membrane for High Temperature Fuel Cell Application

Polymers ◽

10.3390/polym12051000 ◽

2020 ◽

Vol 12 (5) ◽

pp. 1000

Author(s):

Guoxiao Xu ◽

Juan Zou ◽

Zhu Guo ◽

Jing Li ◽

Liying Ma ◽

...

Keyword(s):

High Temperature ◽

Fuel Cell ◽

Composite Membrane ◽

Sulfonic Acid ◽

Elevated Temperatures ◽

Mechanical Stability ◽

Strong Dependence ◽

Proton Exchange ◽

Nafion Membrane ◽

Silica Nanofiber

Although sulfonic acid (SA)-based proton-exchange membranes (PEMs) dominate fuel cell applications at low temperature, while sulfonation on polymers would strongly decay the mechanical stability limit the applicable at elevated temperatures due to the strong dependence of proton conduction of SA on water. For the purpose of bifunctionally improving mechanical property and high-temperature performance, Nafion membrane, which is a commercial SA-based PEM, is composited with fabricated silica nanofibers with a three-dimensional network structure via electrospinning by considering the excellent water retention capacity of silica. The proton conductivity of the silica nanofiber–Nafion composite membrane at 110 °C is therefore almost doubled compared with that of a pristine Nafion membrane, while the mechanical stability of the composite Nafion membrane is enhanced by 44%. As a result, the fuel cell performance of the silica nanofiber-Nafion composite membrane measured at high temperature and low humidity is improved by 38%.

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