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Catalysis and hydrolysis properties of perovskite hydride NaMgH3

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作者:Wang, H (Wang, H.); Zhang, J (Zhang, J.); Liu, JW (Liu, J. W.); Ouyang, LZ (Ouyang, L. Z.); Zhu, M (Zhu, M.)^[1 ]

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The addition of NaH by ball milling is shown to greatly improve the hydrogen storage properties and the hydrolysis properties of MgH2, which is related to the formation of ternary hydride NaMgH3 with specific perovskite structure. The MgH2-10%NaH mixture exhibits better hydriding and dehydriding kinetics than the MgH2-10%LiH mixture, in which the LiMgH3 with perovskite structure could not be formed. The catalytic role of NaMgH3 is attributed to fast hydrogen mobility in the perovskite structure, which provides fast hydrogen diffusion pathways for the hydriding and dehydriding of MgH2. The NaMgH3 also shows fast hydrolysis reaction kinetics without any passivation. Our work shows that such perovskite-type hydride demonstrates great potential as efficient catalysts for the high-capacity hydrides for whether reversible or irreversible hydrogen storage. (C) 2013 Elsevier B.V. All rights reserved.

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作者关键词:Hydrogen storage; NaMgH3; Perovskite structure; Catalysis; Hydrolysis

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作者信息

通讯作者地址:Zhu, M (通讯作者)

S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China.   增强组织信息的名称     South China University of Technology

地址:

	[ 1 ] S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China   增强组织信息的名称     South China University of Technology
	[ 2 ] Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510640, Guangdong, Peoples R China

电子邮件地址:memzhu@scut.edu.cn

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