MXene Ti3C2Tx for phase change composite with superior photothermal storage capability

被引：284
作者：
Fan, Xiaoqiao [1 ]
Liu, Lu [1 ]
Jin, Xin [2 ]
Wang, Wentao [3 ]
Zhang, Shufen [1 ]
Tang, Bingtao [1 ,2 ]
机构：
[1] Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China
[2] Qingdao Univ Sci & Technol, Ecochem Engn Cooperat Innovat Ctr Shandong, Qingdao 266042, Shandong, Peoples R China
[3] Zhejiang Sci Tech Univ, Minist Educ, Key Lab Adv Text Mat & Mfg Technol, Hangzhou 310018, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2019年 / 7卷 / 23期
基金：
中国国家自然科学基金;
关键词：
THERMAL-ENERGY STORAGE; GRAPHENE AEROGELS; CONVERSION; LIGHT; CONDUCTIVITY; NANOSHEETS; OXIDE;
D O I：
10.1039/c9ta03962g
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The latent heat storage of PCMs has gained increasing attention in the solar energy application field due to their high thermal energy storage density. However, the lack of energy conversion ability of the 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 spaces between the flakes. The resulting composites exhibited a strong absorption capacity for electromagnetic waves at the UV-Vis-NIR region. Notably, there are two enhanced absorption bands at the visible and near-infrared regions due to the localized surface plasmon resonance (LSPR) effect of the 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 a high energy storage density and form-stable property before and after the phase transition. These results indicate that the synthesized composite presents superior comprehensive properties suitable for solar energy storage applications.
引用
收藏
页码：14319 / 14327
页数：9
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