【摘要】 TiFe基储氢材料凭借其吸氢量大、放氢环境要求低、原材料丰富等优点,引起了越来越多研究者的关注。然而活化困难和滞后性问题仍是限制其大规模发展运用的主要瓶颈。针对这些问题,国内外学者做出很多研究。本文首先介绍了发展TiFe基储氢合金的必要性,纯TiFe合金的结构和储氢机理以及存在的问题;然后综述了近些年国内外对其研究的进展,并针对TiFe基储氢合金存在的问题,系统地归纳了解决方法,即调整合金元素相对含量,改善加工工艺等;重点从元素引进的角度归纳总结了改善TiFe基储氢合金的方法。最后,对未来的TiFe基储氢材料的发展方向及趋势进行了展望。更多还原

【Abstract】 Ti Fe-based hydrogen storage materials have attracted more and more attention because of their advantages of large hydrogen absorption,low hydrogen release environment requirements,and abundant raw materials. However,activation difficulties and lagging problems are still the main bottlenecks restricting its large-scale development and application. In response to these problems,researchers at home and abroad have done a lot of research. This article summarizes the research progress in recent years at home and abroad,introduces the necessity of developing TiFe-based hydrogen storage alloys,the structure and hydrogen storage mechanism and existing problems of pure TiFe alloys. Solution of the problem: Adjust the relative content of alloy elements and improve the processing technology. Besides,for the first time,the method of improving TiFe-based hydrogen storage alloy was summarized from the perspective of element introduction. It provides theoretical guidance for the largescale and extensive application of TiFe-based hydrogen storage materials in the future.更多还原