Overview of High-Entropy Materials for Energy Storage: Surface Chemistry and Its Functionality

초록

Next-generation energy storage technology requires materials with high stability, tunable electrochemical properties, and enhanced performance. High-entropy materials (HEMs) represent a revolutionary class of materials capable of meeting such requirements. These materials utilize multi-element composition in equimolar ratio to obtain entropy-induced stabilization. This inherent stability, combined with tunable ionic conductivity, charge transfer resistance, and high-voltage phase stability, makes HEMs a potential frontrunner in the development of secondary battery technologies. This chapter presents an introduction of the underlying principles of HEMs in the next-generation energy storage landscape. Later, compositional entropy and the thermodynamic factors that influence phase stability and electrochemical performance are discussed. Lastly, cutting-edge characterization tools, which are crucial to understand the underlying mechanisms and principles, are introduced. By integrating the basics of material science, this chapter forms the platform for the rational design of HEMs, suggesting a blueprint for the design of high-performance, sustainable, and commercially relevant energy storage solutions.

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