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.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Wang Z,Tong Z,Ye Q,Hu H,Nie X,Yan C,Shang W,Song C,Wu J,Wang J,Bao H,Tao P,Deng Tdoi
10.1038/s41467-017-01618-wsubject
Has Abstractpub_date
2017-11-14 00:00:00pages
1478issue
1issn
2041-1723pii
10.1038/s41467-017-01618-wjournal_volume
8pub_type
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