APPLICATION OF HIGH-ENTROPY ALLOYS IN HYDROGEN STORAGE TECHNOLOGY

Abstract

High-entropy alloys (HEAs), a new class of materials with promising structural and functional properties, have recently garnered significant attention in various fields, including hydrogen storage. Their unique design concept and vast compositional diversity offer unprecedented opportunities for the development of advanced hydrogen storage materials. This review aims to systematically analyze the current research status of high-entropy alloys for hydrogen storage, with a focus on compositional designs, synthesis processes, and hydrogen storage characteristics. The review also examines correlations between hydrogen storage performance and composition-related properties, particularly for hydrogen storage alloys crystallizing as BCC solid solutions and Laves phase structures. Various aspects of hydrogen interaction with HEAs, including reversibility of hydrogen storage, cycling stability, and activation behavior have been considered in detail. The potential of HEAs in the development of novel hydrogen storage materials with superior performance is highlighted, emphasizing the importance of effective compositional design and synthesis methods.