Enhanced stretchability and robustness towards flexible ionotronics via double-network structure and ion-dipole interactions

W Qiu, G Chen, H Zhu, Q Zhang, S Zhu - Chemical Engineering Journal, 2022 - Elsevier
Chemical Engineering Journal, 2022Elsevier
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 …
Abstract
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.
Elsevier
以上显示的是最相近的搜索结果。 查看全部搜索结果