AI Article Synopsis
- Photothermal superhydrophobic surfaces are effective anti-/deicing materials but face challenges due to low solar energy density; a new solution incorporates microencapsulated phase change materials (MPCMs) to enhance efficiency.
- Dual-shell octahedral MPCMs have been developed using a copper oxide (Cu O) layer and a copper sulfide (Cu S) layer, achieving a high photothermal conversion efficiency of 96.1% with stable performance over 200 cycles.
- The innovative coatings created from these MPCMs demonstrate excellent anti-/deicing capabilities, particularly in low temperature and high humidity conditions, presenting a significant advancement in the design of high-performance materials for icy environments.
Article Abstract
Photothermal superhydrophobic surfaces are one of the most promising anti-/deicing materials, yet they are limited by the low energy density and intermittent nature of solar energy. Here, a coupling solution based on microencapsulated phase change materials (MPCMs) that integrates photothermal effect and phase change thermal storage is proposed. Dual-shell octahedral MPCMs with Cu O as the first layer and 3D Cu S as the second layer for the first time is designed. By morphology and phase manipulation of the Cu S shell, the local surface plasmonic heating modulation of MPCMs is realized, and the MPCM reveals full-spectrum high absorption with a photothermal conversion efficiency up to 96.1%. The phase change temperature and enthalpy remain in good consistency after 200 cycles. Multifunctional photothermal phase-change superhydrophobic composite coatings are fabricated by combining the hydrolyzed and polycondensation products of octadecyl trichlorosilane and the dual-shell MPCM. The multifunctional coatings exhibit excellent anti-/deicing performance under low temperature and high humidity conditions. This work not only provides a new approach for the design of high-performance MPCMs but also opens up an avenue for the anti-icing application of photothermal phase-change superhydrophobic composite coatings.
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| http://dx.doi.org/10.1002/adma.202310312 | DOI Listing |
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