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

Kean Long Lim, Yongning Liu, Qing An Zhang, Sammy Lap Ip Chan

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

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)CexCa1.03Mg 1.32Ni(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.

Original languageEnglish
Pages (from-to)10537-10545
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume39
Issue number20
DOIs
Publication statusPublished - 3 Jul 2014

Fingerprint

Hydrogen storage
Cerium
cerium
Hydrogenation
hydrogenation
Fuel cells
Substitution reactions
substitutes
aluminum
Aluminum
fuel cells
hydrogen
Hydrogen
Hydrides
Energy storage
Desorption
factorial design
Electricity
metal hydrides
renewable energy

Keywords

  • Factorial design
  • Kinetics
  • La-Mg-Ni based hydrogen storage alloys
  • Pressure-composition-isotherm

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

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. / Lim, Kean Long; Liu, Yongning; Zhang, Qing An; Chan, Sammy Lap Ip.

In: International Journal of Hydrogen Energy, Vol. 39, No. 20, 03.07.2014, p. 10537-10545.

Research output: Contribution to journalArticle

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