Heat Treatment and Microstructural Studies of LaNi-Type Battery Electrode Alloys

• Published in: Materials science forum Vol. 899; pp. 366 - 370
• Main Authors: Faria, R.N., Barbosa, Lusinete Pereira, Ferreira, Eliner Affonso
• Format: Journal Article
• Language: English
• Published: Pfaffikon Trans Tech Publications Ltd 03.07.2017
• Subjects: Alloys; Annealing; Anodes; Atomic emission spectroscopy; Carbon black; Emission analysis; Energy dispersive X ray analysis; Heat treatment; Hydrogen storage; Inductively coupled plasma; Microstructure; Nuclear electric power generation; Phase composition; Polytetrafluoroethylene; Pulverized; Scanning electron microscopy; Spectrometry; Vacuum annealing; X ray analysis; X-ray diffraction; X-rays; Hydrogen Storage Alloy; La-Mg-Ni; Microstructure; Properties
• ISSN: 0255-5476; 1662-9752; 1662-9752
• DOI: 10.4028/www.scientific.net/MSF.899.366

The effects of annealing on the microstructures and electrochemical characteristics of a La0.7Mg0.3Al0.3Mn0.4Co0.5Ni3.8 hydrogen storage alloy have been studied. The heat treatment by vacuum annealing was carried out at 700 °C, 800 °C, 900 °C and 1000 °C. The 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). The battery anode was prepared using a mixture of the pulverized alloy with carbon black and polytetrafluoroethylene as a binder.