Preparation of High‐Performance Ionogels with Excellent Transparency, Good Mechanical Strength, and High Conductivity,Advanced Materials

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Preparation of High‐Performance Ionogels with Excellent Transparency, Good Mechanical Strength, and High Conductivity
Advanced Materials ( IF 27.4 ) Pub Date : 2017-10-30 , DOI: 10.1002/adma.201704253
Yi Ding _{1,

2} , Jiajing Zhang ₃ , Li Chang ₄ , Xiqi Zhang ₃ , Hongliang Liu ₃ , Lei Jiang ₃

Affiliation

Ionogels offer great potential for diverse electric applications. However, it remains challenging to fabricate high‐performance ionogels with both good mechanical strength and high conductivity. Here, a new kind of transparent ionogel with both good mechanical strength and high conductivity is designed via locking a kind of free ionic liquid (IL), i.e., 1‐ethyl‐3‐methylimidazolium dicyanamide ([EMIm][DCA]), into charged poly(2‐acrylamido‐2‐methyl‐1‐propanesulfonic acid) (PAMPS)‐based double networks. On the one hand, the charged PAMPS double network provides good mechanical strength and excellent recovery property. On the other hand, the free [EMIm][DCA] locked in the charged double network through electrostatic interaction offers ionic conductivity as high as ≈1.7–2.4 S m⁻¹ at 25 °C. It is demonstrated that the designed ionogel can be successfully used for a flexible skin sensor even under harsh conditions. Considering the rationally designed chemical structures of ILs and the diversity of charged polymer networks, it is envisioned that this strategy can be extended to a broad range of polymer systems. Moreover, functional components such as conducting polymers, 0D nanoparticles, 1D nanowires, and 2D nanosheets can be introduced into the polymer systems to fabricate diverse novel ionogels with unique functions. It is believed that this design principle will provide a new opportunity to construct next‐generation multifunctional ionogels.

中文翻译：

制备具有优异透明度，良好机械强度和高电导率的高性能电凝胶

离子凝胶为各种电气应用提供了巨大的潜力。然而，制造兼具良好机械强度和高电导率的高性能离子凝胶仍然具有挑战性。在这里，通过将一种游离离子液体（IL），即1-乙基-3-甲基咪唑二氰胺（[EMIm] [DCA]）锁定在其中，设计了一种具有良好机械强度和高导电性的新型透明离子凝胶。带电的基于聚（2-丙烯酰胺基-2-甲基-1-丙烷磺酸）（PAMPS）的双网络。一方面，带电的PAMPS双网络提供了良好的机械强度和出色的恢复性能。另一方面，通过静电相互作用锁定在带电双重网络中的自由[EMIm] [DCA]提供的离子电导率高达≈1.7–2.4 S m ^-1在25°C下。实践证明，设计的离子凝胶即使在恶劣条件下也可以成功用于柔性皮肤传感器。考虑到IL的合理设计的化学结构和带电聚合物网络的多样性，可以预见的是，该策略可以扩展到广泛的聚合物系统范围。此外，可以将诸如导电聚合物，0D纳米粒子，1D纳米线和2D纳米片的功能组件引入聚合物系统，以制造具有独特功能的各种新型离子凝胶。可以相信，这种设计原则将为构建下一代多功能离子电镜提供新的机会。

更新日期：2017-10-30

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