Noble-Metal-Free High-Entropy Oxides for Energy Storage Applications

Implementing cutting-edge materials with extended operational lifespans has become crucial in recent years to meet future energy demands. The emergence of noble-metal free high-entropy materials (HEMs), which have outstanding mechanical qualities, stability at high temperatures, and high chemical stability, has gained a lot of attention for developing energy storage devices such as batteries, dielectric capacitors (DCs), and supercapacitors (SCs). Their distinct structural features, tunable chemical composition, and adjustable functional attributes have garnered significant importance. This chapter provides a thorough overview of recent advancements in noble-metal-free high-entropy-based materials, synthesis approaches, structural design and emphasizes practical energy storage applications. In this context, in order to give researchers some general principles and guidance for the study and future advancement of advanced HEMs, we outline fundamental insights and provide key benefits and lingering challenges. Finally, future directions and energy technologies that can be made possible by using high-entropy materials are described.