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Hydrogen storage in MgH2LaNi5 composites prepared by cold rolling under inert atmosphere
Authors:Jose J. Márquez  Daniel R. Leiva  Ricardo Floriano  Juliano Soyama  Wagner B. Silva  Tomaz T. Ishikawa  Claudio S. Kiminami  Walter J. Botta
Affiliation:1. Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Universidade Federal de São Carlos, Rod. Washington Luiz, Km 235, 13565-905, São Carlos, Brazil;2. Universidade Federal de São Carlos, Departamento de Engenharia de Materiais, Rod. Washington Luiz, Km 235, 13565-905, São Carlos, Brazil;3. Faculdade de Ciências Aplicadas, Universidade Estadual de Campinas, Rua Pedro Zaccaria, 1300, CEP 13484-350, Limeira, SP, Brazil;4. Universidade Federal Do ABC, Avenida Dos Estados 5001, 09210-170, Santo André, Brazil
Abstract:Mg-AB5 composites are promising systems for hydrogen storage applications, due to their possibility of hydrogen cycling at relatively low temperatures. Traditionally, these composites are mainly processed by high-energy ball milling (HEBM) techniques employing longer processing times. In this study, cold rolling was applied to prepare MgH2/>LaNi<sub>5</sub> composites and the hydrogen storage properties were investigated. The materials were processed using a vertical rolling mill under argon atmosphere, leading to a good homogeneity and no contamination at shorter processing times. The mixture of MgH<sub>2</sub>-1.50 mol.% LaNi<sub>5</sub> showed the best hydrogen storage properties at 200 °C and 100 °C and the lowest desorption temperature even when compared to cold rolled MgH<sub>2</sub>. The results indicate that the composite MgH<sub>2</sub><img style=
Keywords:Cold rolling  Composites  Hydrogen storage
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