Preparation and infrared shielding of polyaniline@MWCNTs flexible electrochromic device based on cotton fabric

IF 4 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Synthetic Metals Pub Date : 2024-09-07 DOI:10.1016/j.synthmet.2024.117744

Mengjie Li, Wei Jiang, Yun Lin, Changhui Li, Xue Liu, Qiongzhen Liu, Wenwen Wang, Liyan Yang, Yuedan Wang, Dong Wang

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Abstract

Electrochromic fabric was formed by interfacial polymerization of polyaniline (PANI) and multi-walled carbon nanotubes (MWCNTs) on the surface of cotton cloth. The morphology and properties of the composite films were controlled by changing the content of multi-walled carbon nanotubes. The electrochromic properties of the fabric and its application in the field of near-infrared thermal shielding were studied. It is found that the electrochromic fabrics with MWCNTs have better electrochemical and color-changing properties. Electrochromic fabrics achieve color changes from light yellow to yellow-green to dark green in the voltage range of −1.0–1.2 V, and maintain a fast color switching time (2.15 s for coloring, 1.89 s for bleaching) after 600 cycles. The reflection contrast (ΔR) at 500 nm is 23.01 %. Moreover, the electrochromic devices are assembled with fabrics. The device has obvious discoloration and good bending stability. In addition, the thermal shielding is realized by using their reflection characteristics in the visual-near-infrared region. The results show that the electrochromic device has a low surface temperature at different environmental condition, and the thermal reduction from the original state to the bleached state is up to 3.8 ° C, indicating the potential application of the device in thermal regulation.

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基于棉织物的聚苯胺@MWCNTs 柔性电致变色装置的制备与红外屏蔽

通过聚苯胺（PANI）和多壁碳纳米管（MWCNTs）在棉布表面的界面聚合形成了电致变色织物。通过改变多壁碳纳米管的含量来控制复合薄膜的形态和性能。研究了织物的电致变色特性及其在近红外热屏蔽领域的应用。研究发现，含有多壁碳纳米管的电致变色织物具有更好的电化学性能和变色性能。电致变色织物在 -1.0-1.2 V 的电压范围内实现了从浅黄色到黄绿色再到深绿色的颜色变化，并且在 600 次循环后仍能保持快速的颜色切换时间（着色 2.15 s，漂白 1.89 s）。在 500 纳米波长处的反射对比度（ΔR）为 23.01%。此外，电致变色装置与织物组装在一起。该装置具有明显的褪色和良好的弯曲稳定性。此外，还利用其在可视-近红外区域的反射特性实现了热屏蔽。研究结果表明，电致变色装置在不同环境条件下的表面温度较低，从原始状态到漂白状态的热降幅可达 3.8 °C，这表明该装置在热调节方面具有潜在的应用价值。

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来源期刊

Synthetic Metals 工程技术-材料科学：综合

CiteScore

8.30

自引率

4.50%

发文量

189

审稿时长

33 days

期刊介绍： This journal is an international medium for the rapid publication of original research papers, short communications and subject reviews dealing with research on and applications of electronic polymers and electronic molecular materials including novel carbon architectures. These functional materials have the properties of metals, semiconductors or magnets and are distinguishable from elemental and alloy/binary metals, semiconductors and magnets.