Optimizing hydrogen ad/desorption of Mg-based hydrides for energy-storage applications  

作　　者：Zeng-Yi Li Yu-Jia Sun Chen-Chen Zhang Sheng Wei Li Zhao Ju-Lan Zeng Zhong Cao Yong-Jin Zou Hai-Liang Chu Fen Xu Li-Xian Sun Hong-Ge Pan 

机构地区：[1]Guangxi Key Laboratory of Information Materials and Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials,School of Material Science&Engineering,Guilin University of Electronic Technology,Guilin 541004,China [2]Department of Radiology,Stanford University,Stanford,CA 94305,USA [3]School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,China [4]Beijing Advanced Innovation Center for Materials Genome Engineering,Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China [5]School of Chemistry and Chemical Engineering,Changsha University Of Science&Technology,Changsha 410114,China [6]Institute of Science and Technology for New Energy,Xi’an Technological University,Xi’an 710021,China

出　　处：《Journal of Materials Science & Technology》2023年第10期221-235,共15页材料科学技术（英文版）

基　　金：supported by the National Natu-ral Science Foundation of China(Nos.U20A20237,51863005,52271205,51871065,51971068,and 52101245);the Scientific Research and Technology Development Program of Guangxi(Nos.AA19182014,AD17195073,AA17202030-1,AB21220027,and 2021AB17045);National Natural Science Foundation of Guangxi Province(Nos.2021GXNSFBA075057,2018GXNSFDA281051,2014GXNSFAA118401,and 2013GXNSFBA019244);the Scientific Research and Technology Development Program of Guilin(Nos.20210102-4 and 20210216-1);Guangxi Bagui Scholar Founda-tion,Guilin Lijiang Scholar Foundation,Guangxi Collaborative Innovation centre of Structure and Property for New Energy and Materials,Guangxi Advanced Functional Materials Foundation and Application Talents Small Highlands,Chinesisch-Deutsche Kooperationsgruppe(No.GZ1528).

摘　　要：Hydrogen energy is expected to be an“ideal fuel”in the era of decarbonization.The discovery,de-velopment,and modification of high-performance hydrogen storage materials are the keys to the fu-ture development of solid-state hydrogen storage and hydrogen energy utilization.Magnesium hydride(MgH_(2)),with its high hydrogen storage capacity,abundant natural reserves,and environmental friend-liness,has been extensively researched.Herein,we briefly summarize the typical structure and hy-drogenation/dehydrogenation reaction mechanism of MgH_(2)and provide a comprehensive overview of strategies to effectively tune the thermodynamics and kinetics of Mg-based materials,such as alloy-ing,nanosizing,the introduction of additives,and composite modification.With substantial efforts,great achievements have been achieved,such as lower absorption/desorption temperatures and better cy-cling stability.Nonetheless,some pivotal issues remain to be addressed,such as unfavorable hydro-genation/dehydrogenation factors,harsh conditions,slow kinetics,incomplete dehydrogenation,low hy-drogen purity,expensive catalysts,and a lack of valid exploration of mechanisms in the hydrogena-tion/dehydrogenation process.Lastly,some future development prospects of MgH_(2)in energy-efficient conversion and storage have been presented,including advanced manufacturing ways,stabilization of nanostructures,the introduction of additives combined with structural modification,and utilization of advanced characterization techniques.

关 键 词：Mg-based hydrides Hydrogen storage A lloying CATALYSTS Mechanism 

分 类 号：TB332[一般工业技术—材料科学与工程]