High entropy energy storage materials: Synthesis and application

Advanced materials play a critical role in enhancing the capacity and extending the cycle life of energy storage devices. High-entropy materials (HEMs) with controlled compositions and simple phase structures have attracted the interest of researchers and have undergone rapid development recently. This review covers the recent developments in batteries, fuel cells and supercapacitors enabled by HEMs covering alloy, oxide and other entropy-stabilized compounds. In this review, we begin with the connotation of high entropy and classify HEMs. Also, we analyse the common synthesis methods and the factors affecting the electrochemical performance of HEMs and the mechanism of the high-entropy structure. Then, we summarize the applications of HEMs as electrode materials. Ultimately, we anticipate future research on high-entropy materials.