Magnesium borohydride Mg(BH_(4))_(2) for energy applications:A review  

作　　者：Xiao Li Yigang Yan Torben R.Jensen Yaroslav Filinchuk Iurii Dovgaliuk Dmitry Chernyshov Liqing He Yongtao Li Hai-Wen Li 

机构地区：[1]Hefei General Machinery Research Institute,Hefei 230031,China [2]Institute of New Energy and Low-Carbon Technology,Sichuan University,Chengdu 610207,China [3]Department of Chemistry and Interdisciplinary Nanoscience Center,Aarhus University,Langelandsgade 140,Aarhus C 8000,Denmark [4]Institute of Condensed Matter and Nanosciences,UniversitéCatholique de Louvain,Place L.Pasteur 1,B-1348,Louvain-la-Neuve,Belgium [5]Institut des Matériaux Poreux de Paris,UMR 8004 CNRS,Ecole Normale Supérieure,Ecole Supérieure de Physique et de Chimie Industrielles de Paris,PSL Université,Paris 75005,France [6]Swiss-Norwegian Beamlines at the European Synchrotron Radiation Facility,71 Avenue des Martyrs,Grenoble 38000,France [7]School of Materials Science and Engineering,Anhui University of Technology,Maanshan 243002,China

出　　处：《Journal of Materials Science & Technology》2023年第30期170-179,共10页材料科学技术（英文版）

基　　金：This work was financially supported by the National Natural Science Foundation of China Projects(Nos.52171205,21975168 and 52101249);the Anhui Provincial Natural Science Foundation for Ex-cellent Youth Scholars(No.2108085Y16);the Youth Science and Technology Fund Project of China Machinery Industry Group Co.,Ltd.(No.QNJJ-ZD-2022-01);the Natural Science Foundation of Anhui Province(No.2108085QE191);This work was also sup-ported by the Independent Research Fund Denmark for Technology and Production(No.9041-00226B);by FNRS(PDR T.0169.13,EQP U.N038.13,J.0164.17,CdR J.0073.20);the CommunautéFrançaise de Belgique under Grant ARC 18/23-093.

摘　　要：Mg(BH_(4))_(2) with several polymorphs,known as a high capacity(14.9 wt.%)hydrogen storage material,has become more intriguing due to the recently found new functions of gas physisorption and ionic conduc-tivity.Here we review the state-of-the-art on the energy related functions of Mg(BH_(4))_(2).Mg(BH_(4))_(2) tends to form the stable intermediate[B_(12)H_(12)]^(2−) when the dehydrogenation temperature is above 400℃,the strong B-B bonding of which makes the rehydrogenation condition very harsh.In contrast,lower borane intermediate[B_(3)H_(8)]2−facilitates the rehydrogenation even at a mild condition of 100℃,suggesting the possibility of reversible hydrogen storage in Mg(BH_(4))_(2).The porous polymorphγ-Mg(BH_(4))_(2) shows attrac-tive gas adsorption properties in view of its unique hydridic surface and pore shape,and potentially can be applied in hydrogen adsorption and Kr/Xe selectivity.A new diffraction-based adsorption methodology was developed to characterize adsorption thermodynamics and kinetics ofγ-Mg(BH_(4))_(2),providing a novel idea for the characterization of crystalline porous materials.Moreover,the potential of Mg(BH_(4))_(2) as an electrolyte is discussed in the last part.Mg(BH_(4))_(2)·THF/DME acts as a liquid electrolyte in Mg-batteries,while anion substituted or neutral molecule derivatives of Mg(BH_(4))_(2) can act as solid-state electrolyte.

关 键 词：HYDRIDE Hydrogen storage Gas adsorption Hydrogen adsorption ELECTROLYTE 

分 类 号：O64[理学—物理化学]