Investigating Hydrogen Movement and Lithium-Ion Diffusion in Reactive Hydride Composites for Enhanced Hydrogen Storage Performance using QENS and Impedance Spectroscopy

This proposal aims to investigate the relationship between hydrogen movement and lithium-ion (Li+) conductivity, correlating these factors with dehydrogenation kinetics in a complex hydrogen storage material composed of Mg(NH2)2, LiH, and LiBH4. By examining hydrogen movement at different stages of dehydrogenation, the study seeks to deepen the understanding of ion transport mechanisms within these materials. The findings will offer insights into how Li+ conductivity relates to the behavior of mobile species, such as BH4‒ and NH3, during the dehydrogenation process. Ultimately, this research could enhance hydrogen storage materials by optimizing ion transport properties, which are vital for their efficiency and performance in energy storage applications.

本研究旨在探究氢迁移与锂离子（Li+）电导率之间的关联，并将上述因素与由Mg(NH₂)₂、LiH及LiBH₄组成的复合储氢材料的脱氢动力学建立联系。通过分析脱氢过程不同阶段的氢迁移行为，本研究旨在深化对这类材料内部离子输运机制的认知。研究结果将阐明脱氢过程中锂离子电导率与BH₄⁻、NH₃等迁移物种的行为之间的内在关联。最终，本研究可通过优化离子输运特性实现储氢材料性能的提升，而离子输运特性对于储氢材料在储能应用中的效率与表现至关重要。