Comparative analysis of the efficiencies of hydrogen storage systems utilising solid state H storage materials

JOURNAL OF ALLOYS AND COMPOUNDS

卷:645

Article; Proceedings Paper

Lototskyy, M.¹  Yartys, V. A.^2,3 

[1] Univ Western Cape, Fac Nat Sci, South African Inst Adv Mat Chem, ZA-7535 Bellville, South Africa

[2] Inst Energy Technol, NO-2027 Kjeller, Norway

[3] Norwegian Univ Sci & Technol, NO-7491 Trondheim, Norway

关键词: Hydrogen storage;    Solid-gas reaction;    System efficiency;    Metal hydrides;   

DOI  :  10.1016/j.jallcom.2014.12.107

来源: Elsevier

【 摘 要 】

Evaluation of the performances of hydrogen storage systems accommodating solid H storage materials should include characteristics on their reversible hydrogen storage capacity, operating pressures and temperatures, packing densities, and heat effects of hydrogen uptake and release. We have conducted a performance evaluation of the systems accumulating 5 kg of hydrogen in a containment of cylindrical geometry filled with a solid H storage material including such hydrides and reactive hydride composites as AlH3, MgH2, low-temperature'' (inter) metallic hydrides, NaAlH4, Na3AlH6, LiBH4 + MgH2, and MOFs. The analysis yielded gravimetric and volumetric H storage capacities, and energy efficiencies of hydrogen stores. We conclude that the weight efficiency of hydrogen stores, apart from the gravimetric H storage capacity of the material, is greatly affected by its packing density, and by the pressure-temperature conditions which determine type and dimensions of the containment. The materials with low heat effects of H exchange, operating close to the ambient conditions, should be targeted in the course of the development of new hydrogen stores as offering the best energy efficiency of their operation. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

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