Atmospheric-moisture-induced polyacrylate hydrogels for hybrid passive cooling.

ABSTRACT: Heat stress is being exacerbated by global warming, jeopardizing human and social sustainability. As a result, reliable and energy-efficient cooling methods are highly sought-after. Here, we report a polyacrylate film fabricated by self-moisture-absorbing hygroscopic hydrogel for efficient hybrid passive cooling. Using one of the lowest-cost industrial materials (e.g., sodium polyacrylate), we demonstrate radiative cooling by reducing solar heating with high solar reflectance (0.93) while maximizing thermal emission with high mid-infrared emittance (0.99). Importantly, the manufacturing process utilizes only atmospheric moisture and requires no additional chemicals or energy consumption, making it a completely green process. Under sunlight illumination of 800 W m^-2, the surface

SUBMITTER: Galib RH 

PROVIDER: S-EPMC10593860 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature