Improved electrothermal performance of graphene-carbon nanotubes composite films utilizing AgNWs coating method

IF 2.8 4区工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Flexible and Printed Electronics Pub Date : 2023-02-10 DOI:10.1088/2058-8585/acbb18

Yongqing Zhang, Yizhou Jiang, Feng Ge, Yunbo Li

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引用次数: 3

Abstract

A safe and high-performance electrothermal heater needs a lower operating voltage to produce heat for a long time and with high efficiency. The graphene-carbon nanotubes composite films and the AgNWs (siliver nanowires) dispersions were prepared and the AgNWs were successfully coated on to the composite films. The electrothermal performance of composite films with different carbon nanotubes (CNTs) contents, polymer additions and coating AgNWs were investigated. The maximum heating temperature decreases when the content of the polymer increases. In addition, the maximum temperature increases with the addition of CNTs. The sheet resistance gradually decreases with improving AgNWs coated amount and the sheet resistance changes little with the bending times on the whole. The microstructure of composite films coated with AgNWs revealed that AgNWs filled the holes on the surface of the composite films. Besides, the electrothermal efficiency, heating rate and cooling rate were significantly improved. For the electrothermal performance of the composite film coated with AgNWs only on the contact surface, the electrothermal efficiency, heating rate and cooling rate were also significantly improved compared with those of the composite films without an AgNWs coating. Therefore, composite film coating with AgNWs is one effective method to significantly improve the electrothermal performance for Gr composite film.

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AgNWs涂层法改善石墨烯-碳纳米管复合膜的电热性能

一种安全、高性能的电热加热器需要较低的工作电压才能长时间、高效率地产生热量。制备了石墨烯-碳纳米管复合膜和银纳米线分散体，并成功地将银纳米线涂覆在复合膜上。研究了不同碳纳米管含量、聚合物添加量和涂层AgNWs的复合膜的电热性能。当聚合物含量增加时，最高加热温度降低。此外，最高温度随着CNT的加入而增加。随着AgNWs涂层量的增加，薄层电阻逐渐减小，总体上，薄层电阻随弯曲次数的变化不大。AgNWs涂层复合膜的微观结构表明，AgNWs填充了复合膜表面的孔洞。此外，电热效率、加热速率和冷却速率都有显著提高。对于仅在接触表面上涂覆有AgNWs的复合膜的电热性能，与未涂覆AgNWs涂层的复合膜相比，电热效率、加热速率和冷却速率也显著提高。因此，AgNWs复合膜涂层是显著提高Gr复合膜电热性能的有效方法之一。

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来源期刊

Flexible and Printed Electronics MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

4.80

自引率

9.70%

发文量

101

期刊介绍： Flexible and Printed Electronics is a multidisciplinary journal publishing cutting edge research articles on electronics that can be either flexible, plastic, stretchable, conformable or printed. Research related to electronic materials, manufacturing techniques, components or systems which meets any one (or more) of the above criteria is suitable for publication in the journal. Subjects included in the journal range from flexible materials and printing techniques, design or modelling of electrical systems and components, advanced fabrication methods and bioelectronics, to the properties of devices and end user applications.