材料科学
制作
柔性电子器件
离子电导率
离子液体
偶极子
离子强度
导电体
纳米技术
电致发光
单体
离子
聚合物
复合材料
电解质
电极
化学
有机化学
水溶液
图层(电子)
医学
替代医学
病理
物理化学
催化作用
作者
Wenlian Qiu,Guoqing Chen,He Zhu,Qi Zhang,Shiping Zhu
标识
DOI:10.1016/j.cej.2022.134752
摘要
Ionic conductive gels enabled by ionic liquids (ionogels) are promising candidates for flexible electronics due to less concerns on liquid evaporation and leakage. However, it is still a challenge to simultaneously enhance the strength and stretchability for an ionogel. Here, we report a mechanically robust and stretchable ionogel, employing fluorinated acrylic monomers to construct double network (DN) structure and ion-dipole interactions between ionic liquid and the resulted polymer backbone. The highly transparent ionogels present excellent mechanical properties, with ultimate stretchability up to 784% and strength 5.6 MPa. Noticeably, the addition of ionic liquid up to 30% results in a substantial increase of stretchablity without sacrificing the ultimate stress, due to the strong ion-dipole interactions. With a good conductivity (10−4 to 10−5 S cm−1), the ionogels can be used as flexible conductors for electroluminescent devices and wearable strain sensors, both displaying excellent performance. This study provides a practical strategy on the fabrication of robust and stretchable ionogels for flexible ionotronics.
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