Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 11, Issue 35, Pages 31997-32007Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b10330
Keywords
phase change composites; ultralight and flexible carbon foam; thermal energy storage; temperature regulation; photothermal conversion
Funding
- National Key R&D Program of China [2017YFB0309100]
- Equipment Pre-research Joint Fund of Ministry of Education [6141A02022267]
- Jiangsu Universities Qjng Lan Project [[2016] 15]
- Fundamental Research Funds for the Central Universities [JUSRP51621A, JUSRP41910]
- China Postdoctoral Science Foundation [2017M610296, 2018T110442]
- Open Project Program of Jiangsu Advanced Textile Engineering Technology Center [XJFZ/2018/04]
- Open Project Program of Fujian Key Laboratory of Novel Functional Textile Fibers and Materials at Minjiang University [FKLTFM1801]
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It is important to explore and develop multifunctional phase change composites with high latent-heat capacity and photothermal conversion capability. A novel ultralight and flexible carbon foam (CF)-based phase change composite was fabricated by encapsulating n-eicosane into a CF skeleton that had been precoated with titanium(III) oxide (Ti2O3) nanoparticles (NPs). Morphological structures, as well as the properties of leakage-proof, thermal energy storage, temperature regulation, and photothermal conversion, of the fabricated phase change composites were investigated. The results indicated that the flexible CF skeleton derived from melamine foam (MF) through stabilization in air followed by carbonization in nitrogen was highly porous, which ensured excellent mechanical support and large mass ratio of n-eicosane for the composites. The loading percentage of n-eicosane as high as 84% which acted as thermal storage unit guaranteed high latent-heat capacity and good temperature regulation property of the composite; the melting/crystallization temperatures and enthalpies of the corresponding composite was 36.4/33.7 degrees C and 200.1/200.6 kJ.kg(-1), respectively. The CF skeleton modified with Ti2O3 NPs endowed the fabricated phase change composites with enhanced leakage-proof property, photothermal conversion capability, superior thermal reliability, and temperature regulation ability. Therefore, the resultant phase change composites are believed to have promising and potential applications in solar thermal-energy storage, waste-heat recovery, and infrared stealth of military targets, and so forth.
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