Microstructure and Electrochemical Properties of a LaMgAlMnCoNi Based Alloy for Ni/MH Batteries

Eliner Affonso Ferreira; J.M. Serra; Julio César Serafim Casini; Hidetoshi Takiishi; R.N. Faria

doi:10.4028/www.scientific.net/MSF.727-728.80

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HomeMaterials Science ForumMaterials Science Forum Vols. 727-728Microstructure and Electrochemical Properties of a...

Microstructure and Electrochemical Properties of a LaMgAlMnCoNi Based Alloy for Ni/MH Batteries

Abstract:

The microstructure and electrochemical properties of a La_0.7Mg_0.3Al_0.3Mn₀.₄Co₀.₅Ni_3.8hydrogen storage alloy have been studied. The anode was prepared using a mixture of the ingot alloy in the as-cast state with carbon black and polytetrafluoroethylene (PTFE) as a binder. A Ni (OH)₂ electrode was used as the cathode of the square-type test cell. A separator was used together with a 6M KOH electrolyte. Microstructure and phase composition of the alloy have been investigated using inductively coupled plasma atomic emission spectrometry (ICP-AES), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and X-ray diffraction analysis (XRD). A niobium-containing alloy has also been included for a comparison.

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Materials Science Forum (Volumes 727-728)

Pages:

80-84

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.727-728.80

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Online since:

August 2012

Authors:

Eliner Affonso Ferreira, J.M. Serra, Julio César Serafim Casini, Hidetoshi Takiishi, R.N. Faria

Keywords:

Hydrogen Storage Alloy, La-Mg-Ni, Property, Structure

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