Towards a large-scale and high-performance smart window based on Prussian blue: a revolutionary two-dimensional-material assisted in situ growth preparation method utilizing MXene

被引：6

作者：

Tian, Maofei ^{[1
]}

Lu, Mengshan ^{[1
]}

Wu, Wenjun ^{[1
]}

Zheng, Rongzong ^{[1
,2
]}

Tang, Yanbang ^{[1
]}

Wan, Zhongquan ^{[2
]}

Luo, Junsheng ^{[2
]}

Jia, Chunyang ^{[2
]}

机构：

[1] Guizhou Univ, Coll Mat & Met, Guiyang 550025, Peoples R China

[2] Univ Elect Sci & Technol China, Natl Engn Res Ctr Electromagnet Radiat Control Mat, State Key Lab Elect Thin Films & Integrated Device, Sch Integrated Circuit Sci & Engn, Chengdu 610054, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2024年 / 12卷 / 04期

基金：

中国国家自然科学基金;

关键词：

ION BATTERIES; CATHODE;

D O I：

10.1039/d3ta06768h

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：

Electrochromic smart windows (ESWs) hold great promise in improving energy efficiency in buildings. However, the production of large-scale ESWs still faces significant challenges due to equipment limitations and associated costs. This paper presents a simple, cost-effective, and environmentally friendly method for preparing Prussian blue (PB) films using a two-dimensional-material assisted in situ growth (TAIG) method. The growth mechanism of PB films prepared through the TAIG method was elucidated using SEM, TEM, and XPS characterization techniques. The PB films fabricated using the TAIG method demonstrate exceptional electrochromic properties, including multi-color modulation capabilities (colorless, blue, green, and yellow), a high optical modulation of 65.89% at 713 nm, fast switching times (5.9 s for coloring and 5.4 s for bleaching), and a high coloring efficiency of 81.73 cm(2) C-1. Importantly, after 10 000 cycles, there was virtually no degradation of optical modulation of PB films. The electrochromic enhancement mechanism was elaborated in this paper. A comparison between PB films prepared via the TAIG method and the electrodeposition method was conducted using TG and GIWAXS tests. The PB films prepared through the TAIG method exhibit a low structural water content and a polycrystalline structure. DTF theoretical calculations were further carried out to confirm the lower band gap and great electron transition. Additionally, the successful fabrication of large-scale ESWs measuring 100 x 70 cm(2) using the TAIG method demonstrates its practicality for industrial-scale production. Simulation studies of solar irradiation confirm the shielding capabilities of ESWs and their effectiveness in regulating indoor temperatures. In conclusion, this study represents a significant step towards the performance promotion and industrial-scale production of ESWs, contributing to the development of energy-efficient building solutions.

引用

页码：2053 / 2069

页数：17