An overview on TiFe intermetallic for solid-state hydrogen storage

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Hydrogen energy is a potential alternative of fossil fuels (petroleum and natural gas) based energy systems as hydrogen is environmentally benign by releasing only water vapour as combustion product, readily available in nature, a light element, a carrier of energy due to its portability and generated highest heat of combustion. An overview has been presented on TiFe intermetallic alloys as an exciting research field of Ti-based materials for future stationary and portable solid-state hydrogen storage applications due to its high volumetric capacity and moderate operating conditions. The current trend of research interests on TiFe based alloys is mainly driven by the improvement of its hydrogenation kinetics through engineering the matrix structure and innovative processing routes. Thus, this review article holds the fundamental understanding of TiFe alloys in terms of microstructure, hydride phase formation and hydrogenation, and also includes the recent developments on TiFe intermetallic alloys to ease activation process towards hydrogenation. With the technological advancement and continuous research efforts, solid-state hydrogen storage systems may replace the industrially successful storage mediums due to safety features and low cost in future. This clearly indicates the benefits and relevance of the present article to all researchers and practitioners in the field of interest.

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