Advancements in Metal Hydride Materials for Hydrogen Storage

Abstract

Hydrogen energy is attracting the attention of scientists because of its high energy density and low environmental pollution in the world trend of clean energy use. In addition, the basis for the use of hydrogen energy is its secure, cost-effective, and efficient storage. After decades of devotions by experts, many high-performance hydrogen storage materials have been created. The poor hydrogen storage capacity, challenging hydrogen storage circumstances, slow hydrogen storage speed, and potential safety concerns remain, nonetheless, with the present hydrogen storage materials. Metal hydride materials, which have a high hydrogen storage density and safe reactions, have so steadily been a research focus in recent years. In this paper, magnesium-based materials and titanium-based materials are selected as the representatives of metal hydride materials, and their hydrogen storage mechanisms, common modification methods, and the advanced research progress of these methods are reviewed. Through the analysis of data, the hydrogen storage properties and the respective characteristics of each modified hydrogen storage material are rigorously presented. The key technical limitations and possible improvement directions of these materials are summarized, and the future application prospects and development trends of hydrogen storage materials are predicted at the end.