Effects of partial substitutions of cerium and aluminum on the hydrogenation properties of La(0.65-x)CexCa 1.03Mg1.32Ni(9-y)Aly alloy

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Title:	Effects of partial substitutions of cerium and aluminum on the hydrogenation properties of La(0.65-x)CexCa 1.03Mg1.32Ni(9-y)Aly alloy
Authors:	陳立業;Lim, Kean Long;Liu, Yongning;Zhang, Qing-An;Chan, Sammy Lap Ip
Contributors:	工學院化學工程與材料工程學系
Keywords:	Alternative fuels. Production and utilization;Applied sciences;Energy;Exact sciences and technology;Factorial design;Fuels;Hydrogen;Kinetics;La–Mg–Ni based hydrogen storage alloys;Pressure-composition-isotherm
Date:	2014-07-03
Issue Date:	2026-04-21 14:27:17 (UTC+8)
Publisher:	Elsevier Ltd.;Kidlington: Elsevier Ltd
Abstract:	摘要： Hydrogen in metal hydrides could be one of the promising energy storage mediums to address the intermittent nature of renewable energy. To convert the hydrogen energy to electricity, the storage system has to be coupled with a fuel cells system. Hence, it is important to design a hydrogen storage system that meets the operating requirements for a fuel cell system. In this work, the effects of partial substitution of both cerium and aluminum on the hydrogenation properties of La(0.65−x)CexCa1.03Mg1.32Ni(9−y)Aly alloys were investigated simultaneously using factorial design. Both Ce and Al additions greatly improved the reversibility of hydrogen storage capacity. However, the maximum hydrogen storage capacity and absorption kinetics can be reduced by the additions. As Ce and Al gave opposite effects on the absorption and desorption plateaus, they could be used to tune the properties of the alloys to the desired operating conditions for fuel cell applications. •The effects of partial substitution of both Ce and Al on La–Mg–Ni based alloys.•Both Ce and Al improved the reversibility of hydrogen storage capacity.•Both Ce and Al also reduced the maximum storage capacity and absorption kinetics.•Both Ce and Al gave opposite effects on the absorption and desorption plateaus.•These opposite effects allowed the possibility to tune the plateau properties. 出版者： Kidlington: Elsevier Ltd 出版日期： 2014-07-03 出處： International journal of hydrogen energy, 2014-07, Vol.39 (20), p.10537-10545 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2014 Hydrogen Energy Publications, LLC. 版權： 2015 INIST-CNRS 識別號： ISSN: 0360-3199 識別號： EISSN: 1879-3487 識別號： DOI: 10.1016/j.ijhydene.2014.04.053 識別號： CODEN: IJHEDX
Appears in Collections:	[Department of Chemical and Materials Engineering] journal & Dissertation

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