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Batteries 2016, 2(3), 22; doi:10.3390/batteries2030022

Clean Grain Boundary Found in C14/Body-Center-Cubic Multi-Phase Metal Hydride Alloys

1
Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
2
BASF/Battery Materials-Ovonic, 2983 Waterview Drive, Rochester Hills, MI 48309, USA
3
Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI 48202, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Andreas Jossen
Received: 31 March 2016 / Revised: 22 June 2016 / Accepted: 23 June 2016 / Published: 30 June 2016
(This article belongs to the Special Issue Nickel Metal Hydride Batteries)
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Abstract

The grain boundaries of three Laves phase-related body-center-cubic (bcc) solid-solution, metal hydride (MH) alloys with different phase abundances were closely examined by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and more importantly, electron backscatter diffraction (EBSD) techniques. By using EBSD, we were able to identify the alignment of the crystallographic orientations of the three major phases in the alloys (C14, bcc, and B2 structures). This finding confirms the presence of crystallographically sharp interfaces between neighboring phases, which is a basic assumption for synergetic effects in a multi-phase MH system. View Full-Text
Keywords: nickel/metal hydride (Ni/MH) battery; hydrogen storage alloys; electron beam back-scattering diffraction; Laves phase alloys nickel/metal hydride (Ni/MH) battery; hydrogen storage alloys; electron beam back-scattering diffraction; Laves phase alloys
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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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Shen, H.-T.; Young, K.-H.; Meng, T.; Bendersky, L.A. Clean Grain Boundary Found in C14/Body-Center-Cubic Multi-Phase Metal Hydride Alloys. Batteries 2016, 2, 22.

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