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Meeting

2026 TMS Annual Meeting & Exhibition

Symposium

Late News Poster Session

Presentation Title

B-34: Porous Metal Hydride–Polymer Composites for Hydrogen Storage – From Fundamental Questions to Application

Author(s)

Michael Josef Zehetbauer, Lukas Schweiger, Peter Cengeri, Carlos Belei, Juergen Eckert, Erich Neubauer, Erhard Schafler, Florian Spieckermann

On-Site Speaker (Planned)

Michael Josef Zehetbauer

Abstract Scope

Hydrogen is a key energy carrier for a climate-neutral future but requires viable storage options for widespread use. Beyond compression and liquefaction, metal hydrides such as FeTi and high-entropy alloys (HEAs) offer high storage capacities near ambient conditions with superior safety and efficiency. However, these materials demand high-temperature activation and suffer from deactivation as well as mechanical and structural degradation. Our approach comprises the design of porous HEA hydride–polymer composites to enhance activation, kinetics, and mechanical stability, while preventing deactivation. HEAs are produced by arc melting, pulverized, and mixed with an immiscible sacrificial phase (e.g., Cu) via severe plastic deformation. Dissolution of the sacrificial phase yields a porous structure subsequently stabilized with a polymer binder. Our results demonstrate successful preparation and hydrogen sorption behavior. Ongoing work focuses on processing–structure–property correlations and upscaling, within project HEAfine4H2 of the Austrian Research Promotion Agency (FFG) with academic and industrial partners.

Proceedings Inclusion?

Undecided

Keywords

Energy Conversion and Storage, High-Entropy Alloys, Other

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