材料科学
压电
离子液体
复合材料
透明度(行为)
掺杂剂
氟化物
压力传感器
柔性电子器件
可伸缩电子设备
压电系数
电极
离子键合
数码产品
光电子学
兴奋剂
机械工程
电气工程
离子
计算机科学
物理化学
量子力学
催化作用
无机化学
化学
生物化学
工程类
计算机安全
物理
作者
Hao Bao,Yizhou Ma,Jiatai Sun,Qing Zhao,Lu Yang,Ying Hou,Haiyan He,Huajie Huang,Hongli Ji,Jinhao Qiu
标识
DOI:10.1002/aelm.202201013
摘要
Abstract Nowadays, the advent of pressure sensors for intelligence terminal devices and skin‐inspired electronics has trigged rapid development of flexible, sensitive, and transparent sensing materials. Piezo‐active poly(vinylidene fluoride) (PVDF) is emerging as a promising candidate for sensing components due to the flexible and transparent features. However, the inherent weak piezo‐activity and consequently low sensitivity of PVDF remains a challenge for its sensing applications. Herein, ionic liquids ([EMIM]Cl) additive combined with a composition‐gradient multilayered architecture design are employed to hardness the piezo‐response of PVDF. The resultant composites present ultra‐high piezoelectric coefficient d 33 of 39 pC N −1 , which is 2.78 times that of PVDF. Meanwhile, the transparent ILs dopant enables the composites with superior transparency (87%). With notable advantages of high transparency and piezoelectricity, the ILs/PVDF composites exhibit high sensitivity of 0.0423 V N −1 , ultra‐fast recovery time of 0.2 ms and stable operation capability when coupled with metal electrodes, confirming their applicability for reliable pressure sensor.
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