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Batteries 2017, 3(3), 27; doi:10.3390/batteries3030027

C14 Laves Phase Metal Hydride Alloys for Ni/MH Batteries Applications

1
Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI 48202, USA
2
BASF/Battery Materials—Ovonic, 2983 Waterview Drive, Rochester Hills, MI 48309, USA
3
Department of Mechanical Engineering, Wayne State University, Detroit, MI 48202, USA
4
Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI 48824, USA
*
Author to whom correspondence should be addressed.
Received: 6 June 2017 / Revised: 16 August 2017 / Accepted: 18 August 2017 / Published: 14 September 2017
(This article belongs to the Special Issue Nickel Metal Hydride Batteries 2017)
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Abstract

C14 Laves phase alloys play a significant role in improving the performance of nickel/metal hydride batteries, which currently dominate the 1.2 V consumer-type rechargeable battery market and those for hybrid electric vehicles. In the current study, the properties of C14 Laves phase based metal hydride alloys are reviewed in relation to their electrochemical applications. Various preparation methods and failure mechanisms of the C14 Laves phase based metal hydride alloys, and the influence of all elements on the electrochemical performance, are discussed. The contributions of some commonly used constituting elements are compared to performance requirements. The importance of stoichiometry and its impact on electrochemical properties is also included. At the end, a discussion section addresses historical hurdles, previous trials, and future directions for implementing C14 Laves phase based metal hydride alloys in commercial nickel/metal hydride batteries. View Full-Text
Keywords: metal hydride; nickel metal hydride battery; Laves phase alloy; rare earth element; electrochemistry; pressure concentration isotherm metal hydride; nickel metal hydride battery; Laves phase alloy; rare earth element; electrochemistry; pressure concentration isotherm
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Young, K.-H.; Chang, S.; Lin, X. C14 Laves Phase Metal Hydride Alloys for Ni/MH Batteries Applications. Batteries 2017, 3, 27.

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