Accommodating volume change and imparting thermal conductivity by encapsulation of phase change materials in carbon nanoparticles
| Autor: | A. C. C. de Leon, Bradley J. Rodier, Emily Pentzer, J. Kwon, Rigoberto C. Advincula, Paul A. Advincula |
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| Rok vydání: | 2018 |
| Předmět: |
Phase transition
Materials science Renewable Energy Sustainability and the Environment Graphene business.industry 020209 energy Oxide 02 engineering and technology General Chemistry 7. Clean energy Phase-change material Energy storage law.invention chemistry.chemical_compound Thermal conductivity Chemical engineering chemistry law 0202 electrical engineering electronic engineering information engineering General Materials Science business Thermal energy Leakage (electronics) |
| Zdroj: | Journal of Materials Chemistry A. 6:2461-2467 |
| ISSN: | 2050-7496 2050-7488 |
| DOI: | 10.1039/c7ta09664j |
| Popis: | A Pickering-type emulsion is used as a template to encapsulate the phase change material stearic acid (SA) using graphene oxide nanosheets stitched together. GO-coated SA particles are solid at room temperature and can be used for latent heat storage during the phase change of the SA core. The carbon shell prevents leakage of SA during phase transition from solid to liquid, and also significantly improves the thermal conductivity. Additionally, integrity of the GO/PCM particles is maintained upon heating and cooling, even when the particles were composed of up to 85% PCM, maximizing the energy storage capabilities of the material. The “stitched” graphene oxide shells encapsulate, contain, and improve thermal conductivity of PCMs, and thus provide a new materials construct for thermal energy management and storage. |
| Databáze: | OpenAIRE |
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