Cellulose-Based Radiative Cooling and Solar Heating Powers Ionic Thermoelectrics.

ABSTRACT: Cellulose opens for sustainable materials suitable for radiative cooling thanks to inherent high thermal emissivity combined with low solar absorptance. When desired, solar absorptance can be introduced by additives such as carbon black. However, such materials still shows high thermal emissivity and therefore performs radiative cooling that counteracts the heating process if exposed to the sky. Here, this is addressed by a cellulose-carbon black composite with low mid-infrared (MIR) emissivity and corresponding suppressed radiative cooling thanks to a transparent IR-reflecting indium tin oxide coating. The resulting solar heater provides opposite optical properties in both the solar and thermal ranges compared to the cooler material in the form of solar-reflecting electrospun cellulose. O

SUBMITTER: Liao M 

PROVIDER: S-EPMC10015909 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature