Dynamic tuning of optical absorbers for accelerated solar-thermal energy storage
Open Access
- 14 November 2017
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nature Communications
- Vol. 8 (1), 1-9
- https://doi.org/10.1038/s41467-017-01618-w
Abstract
Currently, solar-thermal energy storage within phase-change materials relies on adding high thermal-conductivity fillers to improve the thermal-diffusion-based charging rate, which often leads to limited enhancement of charging speed and sacrificed energy storage capacity. Here we report the exploration of a magnetically enhanced photon-transport-based charging approach, which enables the dynamic tuning of the distribution of optical absorbers dispersed within phase-change materials, to simultaneously achieve fast charging rates, large phase-change enthalpy, and high solar-thermal energy conversion efficiency. Compared with conventional thermal charging, the optical charging strategy improves the charging rate by more than 270% and triples the amount of overall stored thermal energy. This superior performance results from the distinct step-by-step photon-transport charging mechanism and the increased latent heat storage through magnetic manipulation of the dynamic distribution of optical absorbers.This publication has 51 references indexed in Scilit:
- Multifunctional, Ultra‐Flyweight, Synergistically Assembled Carbon AerogelsAdvanced Materials, 2013
- Electro- and Photodriven Phase Change Composites Based on Wax-Infiltrated Carbon Nanotube SpongesACS Nano, 2012
- Azobenzene-Functionalized Carbon Nanotubes As High-Energy Density Solar Thermal FuelsNano Letters, 2011
- A review on solar energy use in industriesRenewable and Sustainable Energy Reviews, 2011
- Reversible temperature regulation of electrical and thermal conductivity using liquid–solid phase transitionsNature Communications, 2011
- Supraparamagnetic, Conductive, and Processable Multifunctional Graphene Nanosheets Coated with High-Density Fe3O4 NanoparticlesACS Applied Materials & Interfaces, 2010
- A review of solar thermal technologies☆Renewable and Sustainable Energy Reviews, 2010
- Review on thermal energy storage with phase change materials and applicationsRenewable and Sustainable Energy Reviews, 2009
- The rise of grapheneNature Materials, 2007
- Toward Cost-Effective Solar Energy UseScience, 2007