Composition design of (LaCeCa)1(NiMnAl)5 alloys by uniform design method and their hydrogen storage performance

Xuqi Li; Baoquan Li; Yuyuan Zhao; Xu Zhang; Huimin Ma; Xiangyang He; Shujuan Zhou; Li Wang; Huizhong Yan

Journal of Alloys and Metallurgical Systems (Jun 2023)

Composition design of (LaCeCa)1(NiMnAl)5 alloys by uniform design method and their hydrogen storage performance

Xuqi Li,
Baoquan Li,
Yuyuan Zhao,
Xu Zhang,
Huimin Ma,
Xiangyang He,
Shujuan Zhou,
Li Wang,
Huizhong Yan

Affiliations

Xuqi Li: State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, PR China; School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China
Baoquan Li: State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, PR China; School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China
Yuyuan Zhao: State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, PR China; School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China
Xu Zhang: State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, PR China; School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China
Huimin Ma: State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, PR China; School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China
Xiangyang He: State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, PR China; School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China
Shujuan Zhou: State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, PR China; School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China
Li Wang: State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, PR China; School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China
Huizhong Yan: State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, PR China; School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China; National Engineering Research Center of Rare Earth Metallurgy and Functional Materials, Baotou 014030, PR China; Correspondence to: Baotou Research Institute of Rare Earths, Baotou 014030, PR China.

Journal volume & issue: Vol. 2
p. 100006

Abstract

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Rare-earth-based AB5-type alloys are strong candidates for use in solid state hydrogen storage applications; however, their capacity needs to be improved. To efficiently optimize the hydrogen storage performance of AB5-type alloys, the effects of the substitution of Ce and Ca for La (A side) and Mn and Al for Ni (B side) on the structural properties and hydrogenation/dehydrogenation performance of the (LaCeCa)1(NiMnAl)5 alloy series were studied systematically using the uniform design method. X-ray diffraction analysis and scanning electron microscopy showed that all the designed alloys consisted of a single uniform LaNi5 phase. The atomic radii and contents of the constituent elements had a determining effect on the cell volume and properties of the alloys. The maximum hydrogen storage capacity of the (LaCeCa)1(NiMnAl)5 alloy series is approximately 1.7 wt%, which is much higher than the theoretical hydrogen storage capacity of LaNi5 (1.39 wt%).

Published in Journal of Alloys and Metallurgical Systems

ISSN: 2949-9178 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.sciencedirect.com/journal/journal-of-alloys-and-metallurgical-systems

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