Issue 2, 2021

Recent progress of high-entropy materials for energy storage and conversion

Abstract

The emergence of high-entropy materials (HEMs) with their excellent mechanical properties, stability at high temperatures, and high chemical stability is poised to yield new advancement in the performance of energy storage and conversion technologies. This review covers the recent developments in catalysis, water splitting, fuel cells, batteries, supercapacitors, and hydrogen storage enabled by HEMs covering metallic, oxide, and non-oxide alloys. Here, first, the primary rules for the proper selection of the elements and the formation of a favorable single solid solution phase in HEMs are defined. Furthermore, recent developments in different fields of energy conversion and storage achieved by HEMs are discussed. Higher electrocatalytic and catalytic activities with longer cycling stability and durability compared to conventional noble metal-based catalysts are reported for high-entropy materials. In electrochemical energy storage systems, high-entropy oxides and alloys have shown superior performance as anode and cathode materials with long cycling stability and high capacity retention. Also, when used as metal hydrides for hydrogen storage, remarkably high hydrogen storage capacity and structural stability are observed for HEMs. In the end, future directions and new energy-related technologies that can be enabled by the application of HEMs are outlined.

Graphical abstract: Recent progress of high-entropy materials for energy storage and conversion

Associated articles

Article information

Article type
Review Article
Submitted
29 Sept. 2020
Accepted
24 Nov. 2020
First published
24 Nov. 2020

J. Mater. Chem. A, 2021,9, 782-823

Author version available

Recent progress of high-entropy materials for energy storage and conversion

A. Amiri and R. Shahbazian-Yassar, J. Mater. Chem. A, 2021, 9, 782 DOI: 10.1039/D0TA09578H

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