Mg88Ce4Ca6In2储氢材料制备及水解放氢性能

doi:10.11896/cldb.24060047

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Abstract According to hydrogen fuel cell hydrogen supply system requirements, the Mg-Ce-Ca-In/Fe@C-BM composites were successfully prepared by taking Mg as the base element, introducing Ce, Ca, In elements and combining with Fe@C catalyst. XRD, SEM, particle size distribution and other methods were used to analyze phase composition and characterize the microstructure of these samples before and after hydrogenation, and the properties of hydrogen absorption of different component alloys and hydrolysis performance of hydrogenated materials were studied. In addition, the test system for hydrolytic hydrogen release was also designed and established to evaluate the hydrolysis performance of 300-gram-scale hydrogen release system. The results show that there are Mg-(Ce/Ca/In) alloy phases in the alloy Mg₈₈Ce₄Ca₆In₂, and the correspon-ding hydrides are formed after hydrogenation, which can improve the hydrogen absorption and hydrolysis properties obviously. And the pretreatment method of adding catalyst and then ball-milling can further improve the hydrogen storage density of materials, including alloys and hydroge-nated samples. The hydrolysis reaction of H-Mg₈₈Ce₄Ca₆In₂/Fe@C-BM prepared in batches was carried out in the citric acid solution under the condition of 80 ℃ water bath, and the average amount of hydrogen generated reached 1 646 mL/g within 3 min. In the hectogram-scale hydrolytic hydrogen release test system, total hydrogen release reaches 345 SL in 5 hours, and the unit hydrogen emission release 1.15 SL/g, which can supply hydrogen stably at a 2 L/min flow rate to meet the stable supply of hydrogen for back-end fuel cells.

Key words： magnesium-based alloy hydrogenation reaction hydrolysis hydrogen release kinetics hydrogen fuel cell

Published: Online: 2025-08-28

CLC number:	TK91
	TG139+.7

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	Articles by authors
	ZHANG Qianqian
	ZHAO Yang
	LI Jianqiu
	YONG Hui
	ZHENG Yue
	SONG Feifei
	WANG Yanhao
	KANG Zhong

Cite this article:

ZHANG Qianqian,ZHAO Yang,LI Jianqiu, et al. Preparation of Mg₈₈Ce₄Ca₆In₂ Hydrogen Storage Material and Its Hydrolysis Performance for Hydrogen Release[J]. Materials Reports, 2025, 39(17): 24060047-8.

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https://www.mater-rep.com/EN/10.11896/cldb.24060047 OR https://www.mater-rep.com/EN/Y2025/V39/I17/24060047

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