The thermochromic smart window and thermo-electrochromic device (T-ECD) based on PNIPAm/Ppy composite hydrogel for fast phase transition

被引：13

作者：

Liu, Jinhua ^{[1
]}

Lu, Haoran ^{[1
]}

Huang, Qinya ^{[1
]}

Ding, Zhiwei ^{[1
]}

Yang, Rongguang ^{[1
]}

Geng, Maoxiang ^{[1
]}

Meng, Minjia ^{[1
]}

Liu, Zhanchao ^{[2
]}

Liu, Yan ^{[1
]}

机构：

[1] Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China

[2] Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Peoples R China

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2023年 / 263卷

基金：

中国国家自然科学基金;

关键词：

PNIPAm; Ppy; Photothermal conversion; Thermochromic; Fast phase transition; ENHANCED LUMINOUS TRANSMITTANCE; SOLAR MODULATION; NANOCOMPOSITE;

D O I：

10.1016/j.solmat.2023.112596

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Thermochromic smart windows possess great application potential in terms of building energy conservation. Herein, a novel smart window is designed by combining thermochromic poly(N-isopropylacrylamide) (PNIPAm) and polypyrrole (Ppy). The photothermal conversion effect of Ppy could effectively accelerate the phase tran-sition of PNIPAm. The Ppy could provide extra heat for PNIPAm hydrogel, the phase transition time of PNIPAm/ Ppy would be reduced to 3 min(12 min for pure PNIPAm hydrogel). The smart window exhibits excellent solar modulation efficiency(53.7 %). Different concentrations of KCl could regulate phase transition temperature of PNIPAm between 20 and 32 degrees C. Under irradiation of simulated light for 20 min, the water temperature of test tube covered by PNIPAm/Ppy smart window is 3.5 degrees C lower than that of blank glass. Moreover, T-ECD based on PNIPAm/Ppy could reduce phase transition time to 90 s. The electrochromic property of Ppy could endow T-ECD with more colours, and The T-ECD exhibits high solar modulation efficiency(63.0 %) which could decline transmittance to 0.2 %. PNIPAm/Ppy composite hydrogel provides new ideas for the design of thermochromic smart windows and thermo-electrochromic dual-response devices.

引用

页数：10