Abstract: TiFe-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 large-scale and extensive application of TiFe-based hydrogen storage materials in the future.
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