摘要
能量密度高、热值大、资源丰富、无污染、可储存、可再生、可燃烧和可发电的氢能,被誉为21世纪解决能源危机和缓解温室效应的“终极能源”。MgH_(2)因其较高的理论储氢容量,有望成为未来车载氢能源载体而备受关注,但其过高的热力学稳定性、缓慢的吸放氢动力学等缺点限制了其工程应用。比表面积高、结构性质可调以及金属离子可高效利用的金属有机骨架(MOFs)材料,在镁基材料储氢性能的改善方面展现出良好的应用前景。概述了MOFs材料对镁基材料储氢性能的催化掺杂改性、纳米限域催化改性,以及MOFs材料的常见制备方法,并对该领域的研究前景进行展望。
In recent years,rapid economic development has driven the growing energy demand,leading to environmental pollution problems and energy shortage caused by the widespread use of fossil fuels.Hydrogen energy,with high energy density,large calorific value,abundant resources,zero pollutions,storable,renewable and electric and combustible,has been termed as the"ultimate energy"to solve the energy crisis and alleviate the greenhouse effect in the 21st century.However,the promotion and practical application of hydrogen energy have been limited by its storage and transportation.Nowadays,there are three major hydrogen storage technologies,compressed gaseous storage,cryogenic liquid storage and solid-state materials storage.Among these,the solid-state hydrogen storage technology has gained popularity because of the unique features of good safety,convenient transportation,long service life,high volume storage density,low storage pressure and high purity of hydrogen release,making it perfect for hydrogen fuel cell vehicles.With a mass hydrogen storage density of 7.69%and volume hydrogen storage density of 106 kg·m^(-3),MgH_(2)had been identified as one of the most promising on-board hydrogen energy carriers.However,before it could be used for industrial purposes,the high thermodynamic stability and sluggish reaction kinetics needed to be modified,which were caused by its large formation enthalpies(ΔH=76 kJ·mol^(-1)H_(2))and high reaction activation energies(ΔE=160 kJ·mol^(-1)).Metal-organic frameworks(MOFs)with large surface areas,adjustable structural properties,and efficient utilization of metal ions,had shown promising application prospects in improving the hydrogen storage performance of MgH_(2)by catalysis and nanoconfinement with in-situ catalysis.MOFs with different structures including isoreticular metal-organic framework(IRMOF),Zeolitic Imidazolate Framework(ZIF),Materials of Institute Lavoisier(MIL)and University of Oslo(UIO),could be synthesized by various methods,such as hydrothermal,solvothermal,conventional
作者
丁朝
李宇庭
侯全会
李谦
陈玉安
潘复生
Ding Zhao;Li Yuting;Hou Quanhui;Li Qian;Chen Yu’an;Pan Fusheng(National Engineering Research Center for Magnesium Alloys,College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China;The State Key Laboratory of Refractories and Metallurgy,Institute of Advanced Materials and Nanotechnology,Wuhan University of Science and Technology,Wuhan 430081,China;School of Automotive Engineering,Yancheng Institute of Technology,Yancheng 224051,China)
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2023年第12期1603-1613,共11页
Chinese Journal of Rare Metals
基金
中央高校基本业务费项目(2023CDJXY-019)
乐山西部硅材料光伏新能源产业技术研究院开放项目(2023GY8)
重庆市技术创新与应用发展专项重点项目(cstc2019jscx-dxwtBX0016)
湖北省教育厅科学研究计划指导性项目(B2021025)资助
关键词
金属有机骨架(MOFs)
镁基储氢材料
储氢性能
催化
纳米限域催化
metal-organic frameworks(MOFs)
magnesium-based hydrogen storage materials
hydrogen storage performance
catalysis
nanoconfinement with in-situ catalysis
