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    Solar-thermal conversion and thermal energy storage of graphene foam-based composite

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    Type
    Article
    Authors
    Zhang, Lianbin cc
    Li, Renyuan cc
    Tang, Bo cc
    Wang, Peng cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2016
    Permanent link to this record
    http://hdl.handle.net/10754/617090
    
    Metadata
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    Abstract
    Among various utilizations of solar energy, solar-thermal conversion has recently gained renewed research interest due to its extremely high energy efficiency. However, one limiting factor common to all solar-based energy conversion technologies is the intermittent nature of solar irradiation, which makes them unable to stand-alone to satisfy continuous energy need. Herein, we report a three-dimensional (3D) graphene foam and phase change material (PCM) composite for the seamlessly combined solar-thermal conversion and thermal storage for sustained energy release. The composite is obtained by infiltrating the 3D graphene foam with a commonly used PCM, paraffin wax. The high macroporosity and low density of the graphene foam allow for high weight fraction of the PCM to be incorporated, which enhances heat storage capacity of the composite. The interconnected graphene sheets in the composite provide (1) the solar-thermal conversion capability, (2) high thermal conductivity and (3) form stability of the composite. Under light irradiation, the composite effectively collects and converts the light energy into thermal energy, and the converted thermal energy is stored in the PCM and released in an elongated period of time for sustained utilization. This study provides a promising route for sustainable utilization of solar energy.
    Citation
    Solar-thermal conversion and thermal energy storage of graphene foam-based composite 2016 Nanoscale
    Sponsors
    The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST) CRG-3.
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    Nanoscale
    DOI
    10.1039/C6NR03921A
    PubMed ID
    27430282
    Additional Links
    http://pubs.rsc.org/en/Content/ArticleLanding/2016/NR/C6NR03921A
    ae974a485f413a2113503eed53cd6c53
    10.1039/C6NR03921A
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

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