Bio‐Mass Radiative Cooling Materials: Progress and Prospects

Abstract Radiative cooling (RC) is a passive cooling technology that leverages infrared radiation to reduce temperatures without external energy input, presenting a crucial approach to mitigating global warming and lowering energy consumption. Biomass‐based RC materials, known for their environmental sustainability and abundance, offer a promising alternative for RC applications. This review outlines the fundamental principles of radiative cooling and examines recent advancements in biomass‐based RC materials, such as natural wood, cellulose, chitosan, silk, and bioplastics. Furthermore, it highlights key challenges and explores future development prospects in this field.