A REVIEW OF HIGH-ENTROPY ALLOYS AND THEIR APPLICATIONS IN HYDROGEN ENERGY

58 40

Abstract

High-entropy alloys (HEAs) have become an important area of ​​modern materials development due to their unique physicochemical properties and are promising for application in hydrogen energy. This paper reviews the latest research on the application of HEAs for hydrogen storage with an emphasis on their microstructure, synthesis and design methods, and storage properties. The advantages of HEAs are discussed, including high stability at various temperatures and pressures, mechanical strength, and hydrogen absorption capacity; examples of single-component and multicomponent alloys are given. Examples of alloys with single- and multicomponent phases, including BCC and Laves phases, and their ability to efficiently absorb and desorb hydrogen are considered. The results of studies confirming the high storage density and corrosion resistance of HEAs, which contributes to their long-term operation and reduced maintenance costs, are presented. Current limitations, such as the need to improve the ductility and stability of phase structures, are also discussed. The paper suggests directions for further research, including the development of methods for composition optimization and structural modification, which will improve the thermodynamic properties of HEAs and adapt them for hydrogen storage in industrial conditions. The importance of further study of these materials for the advancement of hydrogen technologies and the development of sustainable energy sources, which will facilitate the transition to environmentally friendly energy, is emphasized.