JMR Focus Issue on High Entropy Materials for Renewable Energy and the Environment

High entropy materials (HEMs) in materials research have matured in recent years. These near equimolar and non-equimolar materials having three or more major components along with their mingled sites over the surface are unique materials for various catalytic reactions involving renewable energies and the environment. HEMs are endowed with outstanding properties due to salient effects associated with their multi-principal component nature containing a variable proportion of active metals. They provide improved catalytic activity controlled by rational tuning of composition, geometry, structure and dimensionality.