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Light metal hydrides and complex hydrides for hydrogen storage
F Schüth1, B Bogdanović, M Felderhoff
1Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim, Germany. schueth@kofo.mpg.de.
Chemical Communications (Cambridge, England)
|October 19, 2004
Summary
Feasible hydrogen storage is crucial for widespread adoption of proton exchange membrane (PEM) fuel cells in vehicles. Chemical storage, particularly catalyzed alanates like sodium aluminum hydride (NaAlH4), shows significant promise due to advanced capacity and kinetics.
Area of Science:
- Materials Science
- Chemical Engineering
- Energy Storage
Background:
- Proton exchange membrane (PEM) fuel cells require efficient hydrogen storage for automotive applications.
- Current hydrogen storage methods include cryostorage, high-pressure tanks, and chemical storage via reforming or reversible systems.
Purpose of the Study:
- To review various chemical hydrogen storage methods.
- To focus on the most advanced chemical storage systems, specifically catalyzed alanates, for their potential in fuel cell vehicles.
Main Methods:
- Literature review of different hydrogen storage technologies.
- Analysis of chemical storage systems, with emphasis on catalyzed alanates (e.g., NaAlH4).
- Evaluation of storage capacity and reaction kinetics of advanced materials.
Main Results:
- Chemical storage methods are emerging as attractive alternatives to traditional storage techniques.
- Catalyzed alanates, particularly NaAlH4, demonstrate high storage capacity and favorable kinetics for hydrogen release.
Conclusions:
- Advanced chemical storage systems, especially catalyzed alanates, are key to enabling large-scale PEM fuel cell vehicle deployment.
- Sodium aluminum hydride (NaAlH4) represents a leading candidate for efficient and practical hydrogen storage.