Abstract: In light of climate change imperatives, there arises a critical need for technological advancements and research endeavors towards clean energy alternatives to replace
conventional fossil fuels. Additionally, the development of high-capacity energy storage solutions for global transportability becomes paramount. Hydrogen emerges as a promising
environmentally sustainable energy carrier, devoid of carbon dioxide emissions and possessing a high energy density per unit mass. Its versatile applicability spans various sectors including
industry, power generation, and transportation. However, the commercialization of hydrogen necessitates further technological innovations. Notably, high-pressure compression for
hydrogen storage presents safety challenges and inherent limitations in storage capacity about 30%?50% lost production of hydrogen. Consequently, substantial research endeavors are
underway in the domain of material-based chemical hydrogen storage that reactions to occur at temperatures below 200 ℃. This approach enables the utilization of existing infrastructure,
such as fossil fuels and natural gas, while offering comparatively elevated hydrogen storage
capacities. This study aims to introduce recent investigations concerning the synthesis and
decomposition mechanisms of chemical hydrogen storage materials, including methanol,
ammonia, and Liquid Organic Hydrogen Carrier (LOHC).
Keywords: hydrogen storage; chemical hydride; catalysis; hydrogenation