A Local-Dissociation Solid-State Polymer Electrolyte with Enhanced Li+ Transport for High-Performance Dual-Band Electrochromic Smart Windows

被引：3

作者：

Li, Run ^{[1
]}

Lan, Fan ^{[1
]}

Tang, Lian ^{[1
]}

Huang, Ya ^{[1
]}

Zhao, Siming ^{[1
]}

Wang, Baoshun ^{[1
]}

Han, Ying ^{[1
]}

Gao, Di ^{[1
]}

Jiang, Qinyuan ^{[1
]}

Zhao, Yanlong ^{[1
]}

Zhao, Zhuojing ^{[1
]}

Wang, Fei ^{[1
]}

Zhang, Rufan ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem Engn, Beijing Key Lab Green Chem React Engn & Technol, Beijing 100084, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2025年 / 35卷 / 15期

基金：

中国国家自然科学基金;

关键词：

dual-band modulation; electrochromic; polymer; smart windows; solid-state electrolyte; INTERFACE; DEVICES;

D O I：

10.1002/adfm.202419357

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Windows through heat exchange play a vital role in energy saving for realizing a net-zero carbon emission society. Dual-band electrochromic (EC) smart windows by dynamically regulate visible (VIS) and near-infrared (NIR) light are necessary for improving both building energy efficiency and habitant comfort. However, the rational design of high-performance electrochromic devices (ECDs) suffers sluggish EC response due to the slow ion transport. In this work, a locally dissociated Li+ concept is proposed to construct a solid-state polymer electrolyte (SPE) with ultrafast Li+ transport. The succinonitrile (SN) is employed to loosen the Li+-anion pair and the crystallographic C & horbar;O chain in the poly(ethylene glycol) methyl ether methacrylate (PEGMA) electrolyte by its strong solvation capability. The as-prepared SPE shows a high ionic conductivity of 6.48 mS cm(-1) at 30 degrees C and a high transmittance of >90%. The SPE-based EC smart windows exhibited a fast switching speed (3.0/3.2 s for coloration/bleaching), a high coloration efficiency (CE) of 373.8 cm(2) C-1, and a high optical modulation in the full solar spectrum (85%, 70%, 43% at 673, 1200, and 1600 nm, respectively). Finally, the SPE-based EC smart windows shows three working modes with a temperature regulation range of 19.1 degrees C, exhibiting great potential in practical application.

引用

页数：10

共 47 条

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