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MXene Ti3C2Tx for Phase Change Composite with Superior Photothermal Storage Capability

Abstract

Latent heat storage of PCMs has gained increasing attention in solar energy application field due to their high thermal energy storage density. However, the lack of energy conversion ability of organic PCMs results in the low utilization efficiency of solar energy. Herein, we report a novel PEG/Ti3C2Tx layered composite PCM with superior photothermal storage capability, which consists of stacked Ti3C2Tx nanosheets and PEG filled within the space between flakes. The resulting composites exhibited strong absorption capacity for electromagnetic wave at UV−vis−NIR region. Notably, there are two enhanced absorption bands at visible and near-infrared region due to the localized surface plasmon resonance (LSPR) effect of Ti3C2Tx nanosheets, which endows the composite PCM with excellent photo-to-thermal storage efficiencies (up to 94.5%) under actual solar light irradiation. In addition, the composite PCM also possesses high energy storage density and form-stable property before and after phase transition. These results indicate that the synthesized composite presents the superior comprehensive properties suitable for solar energy storage applications.

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Supplementary files

Publication details

The article was received on 15 Apr 2019, accepted on 15 May 2019 and first published on 16 May 2019


Article type: Paper
DOI: 10.1039/C9TA03962G
J. Mater. Chem. A, 2019, Accepted Manuscript

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    MXene Ti3C2Tx for Phase Change Composite with Superior Photothermal Storage Capability

    X. Fan, L. Liu, X. Jin, W. Wang, S. Zhang and B. Tang, J. Mater. Chem. A, 2019, Accepted Manuscript , DOI: 10.1039/C9TA03962G

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