聚乙烯醇缩丁醛
材料科学
电致变色
电解质
电致变色装置
离子电导率
非阻塞I/O
聚合物
复合材料
化学工程
胶粘剂
热稳定性
电导率
图层(电子)
电极
有机化学
化学
物理化学
工程类
催化作用
作者
Xueqi Wang,Ye Yang,Qiongya Jin,Qicun Lou,Qizhao Hu,Ziling Xie,Weijie Song
标识
DOI:10.1002/adfm.202214417
摘要
Abstract Polyvinyl butyral (PVB) is a well‐established polymer interlayer material that has been used in laminated safety glass panels for over 80 years. However, its intrinsically poor ionic conductivity (σ) severely restricts its widespread application as a solid polymer electrolyte (SPE) for laminated WO 3 –NiO electrochromic devices (ECDs). Here, a new strategy for significantly improving the σ of PVB via a cross‐linking reaction with 3‐glycidoxypropyltrimethoxysilane (KH560) is presented. The cross‐linked PVB‐SPE with 10 wt.% KH560 exhibits the highest room‐temperature σ value among the investigated samples (1.51 × 10 −4 S cm −1 ), which is also higher than that of previously reported PVB‐based SPEs (10 −5 –10 −7 S cm −1 ). Additionally, the prepared SPE exhibits comprehensive optical, mechanical, and thermal performances, including a high visible transmittance (>91%), relatively high adhesive strength (2.13 MPa), and superior thermal stability (up to 150 °C). Laminated WO 3 –NiO ECDs with dimensions of 5 × 5 cm 2 and 20 × 20 cm 2 , fabricated by leveraging the aforementioned properties of the electrolyte, operate stably at temperatures ranging from −20 to 80 °C, underscoring the potential of the PVB‐SPE for realizing commercially viable large‐area ECDs.
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