New hydride-forming materials : challenges towards a new generation of high energy density Nickel-Metal-Hydride batteries

Alexander Lyedovskykh, D. Danilov, A. Ayeb, P.H.L. Notten

Research output: Book/ReportReportAcademic

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Abstract

The new mathematical model to estimate volumetric and gravimetric energy densities of the rechargeable NiMH batteries has been proposed. Application of the new prospective Mg0.80Sc0.20 (1740 mAh/g) hydride forming material for MH electrode has been studied with the help of that model. It was shown that application of the new Mg0.80Sc0.20 material gives 58 % advance in gravimetric energy density (Wh/kg) for AA-size battery those expected capacity reaches 3045 mAh. For the battery having the same weight as normal AA-size battery higher gains have been achieved, namely, 5 % increase in volumetric energy density and 80 % in gravimetric. Thus prospective NiMH battery may compete with majority of the currently available lithium-ion batteries. The new binary (e.g. Mg-Ti) and ternary (e.g. Mg-Ti-Al) alloys having the same capacity as MgSc alloys can be implemented on a large industrial scale instead of expensive MgSc materials.
Original languageEnglish
Place of PublicationEindhoven
PublisherEurandom
Number of pages22
Publication statusPublished - 2009

Publication series

NameReport Eurandom
Volume2009008
ISSN (Print)1389-2355

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