Aluminum hydride(AlH3) is a binary metal hydride that contains more than 10.1 wt% of hydrogen and possesses a high volumetric hydrogen density of 148 kg H2 m^(-3).Pristine AlH3 can readily release hydrogen at a modera...Aluminum hydride(AlH3) is a binary metal hydride that contains more than 10.1 wt% of hydrogen and possesses a high volumetric hydrogen density of 148 kg H2 m^(-3).Pristine AlH3 can readily release hydrogen at a moderate temperature below 200℃.Such high hydrogen density and low desorption temperature make AlH3 one of most promising hydrogen storage media for mobile application.This review covers the research activity on the structures,synthesis,decomposition thermodynamics and kinetics,regeneration and application validation of AlH3 over the past decades.Finally,the future research directions of AlH3 as a hydrogen storage material will be revealed.展开更多
Aluminum hydride(AlH_(3))is a covalently bonded trihydride with a high gravimetric(10.1 wt%)and volumetric(148 kg·m^(-3))hydrogen capacity.AlH_(3)decomposes to Al and H_(2)rapidly at relatively low temperatures,i...Aluminum hydride(AlH_(3))is a covalently bonded trihydride with a high gravimetric(10.1 wt%)and volumetric(148 kg·m^(-3))hydrogen capacity.AlH_(3)decomposes to Al and H_(2)rapidly at relatively low temperatures,indicating good hydrogen desorption kinetics at ambient temperature.Therefore,AlH_(3)is one of the most prospective candidates for high-capacity hydrogen storage materials.Firstly,this review briefly summarizes the basic chemical and physical characteristics of AlH_(3).Then,its synthesis,dehydrogenation thermodynamics and kinetics,regeneration and methods for improving reversibility of hydriding are described with the aim of applying this material for hydrogen storage.In accordance with the fact that AlH_(3)is generally formed by reacting Al with H_(2)at extremely high hydrogen pressure,the high-pressure study of this hydride is discussed in detail.Finally,the advantages,weaknesses,critical technical challenges and outlook of this field are discussed.展开更多
基金financially supported by the National Natural Science Foundation of China (No. 51771171, and 51971199)Education Department of Guangxi Zhuang Autonomous Region (No. 2019KY0021)the Natural Science Foundation of Guangxi Province (2019GXNSFBA185004, and 2018GXNSFAA281308)。
文摘Aluminum hydride(AlH3) is a binary metal hydride that contains more than 10.1 wt% of hydrogen and possesses a high volumetric hydrogen density of 148 kg H2 m^(-3).Pristine AlH3 can readily release hydrogen at a moderate temperature below 200℃.Such high hydrogen density and low desorption temperature make AlH3 one of most promising hydrogen storage media for mobile application.This review covers the research activity on the structures,synthesis,decomposition thermodynamics and kinetics,regeneration and application validation of AlH3 over the past decades.Finally,the future research directions of AlH3 as a hydrogen storage material will be revealed.
基金financially supported by the National Natural Science Foundation of China(Nos.51901080 and U1601212)the Foundation for Innovative Research Groups of the National Natural Science Foundation of China(No.51621001)Guangdong Basic and Applied Basic Research Foundation(No.2019A1515010039)。
文摘Aluminum hydride(AlH_(3))is a covalently bonded trihydride with a high gravimetric(10.1 wt%)and volumetric(148 kg·m^(-3))hydrogen capacity.AlH_(3)decomposes to Al and H_(2)rapidly at relatively low temperatures,indicating good hydrogen desorption kinetics at ambient temperature.Therefore,AlH_(3)is one of the most prospective candidates for high-capacity hydrogen storage materials.Firstly,this review briefly summarizes the basic chemical and physical characteristics of AlH_(3).Then,its synthesis,dehydrogenation thermodynamics and kinetics,regeneration and methods for improving reversibility of hydriding are described with the aim of applying this material for hydrogen storage.In accordance with the fact that AlH_(3)is generally formed by reacting Al with H_(2)at extremely high hydrogen pressure,the high-pressure study of this hydride is discussed in detail.Finally,the advantages,weaknesses,critical technical challenges and outlook of this field are discussed.
