The influence of Pr and Mg content on the hydrogen decrepitation of LaNi-based battery alloys
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This paper reports the results of investigations of the hydrogenation and decrepitation of
some LaNi-based hydrogen storage cast ingot alloys. A decrepitation procedure for battery negative
electrode alloys has been applied using a combination of hydrogen pressure and heating from room
temperature to 773K. It has been shown that the Pr and Mg content have a significant influence on
the microstructures of the hydrogenated alloys and decrepitation efficiency. Alloys with high
concentration of Pr and Mg required an activation quenching treatment for starting the absorption of
hydrogen. The decrepitated materials were characterized by scanning electron microscopy (SEM).
Electrodes for alloy discharge capacity studies were produced using a nickel screen and
electrochemical measurement were carried out in a standard three-electrode cell. The H content of
the negative electrode, expressed as the number o H atoms (n) per formula unit, was determined
using the measured storage capacity.
Como referenciar
SOARES, E.P.; ZARPELON, L.M.C.; FARIA, R.N. The influence of Pr and Mg content on the hydrogen decrepitation of LaNi-based battery alloys. Materials Science Forum, v. 899, p. 148-153, 2017. DOI: 10.4028/www.scientific.net/MSF.899.148. Disponível em: http://repositorio.ipen.br/handle/123456789/27917. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.