AlH3 as a hydrogen storage material:recent advances,prospects and challenges

• 作者: Wei Jiang Hui Wang Min Zhu
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2021,（12）
• 所属期刊栏目: REVIEWS
• 页码范围: 3337-3356
• 页数: 20页
• 语种: 英文

摘要

Aluminum hydride (AlH3) is a covalently bon-ded trihydride with a high gravimetric (10.1 wt％) and volumetric (148 kg.m-3) hydrogen capacity.AlH3 decomposes to Al and H2 rapidly at relatively low tem-peratures,indicating good hydrogen desorption kinetics at ambient temperature.Therefore,AlH3 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 AlH3.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 AlH3 is generally formed by reacting Al with H2 at extremely high hydrogen pressure,the high-pressure study of this hydride is discussed in detail.Finally,the advan-tages,weaknesses,critical technical challenges and outlook of this field are discussed.