High-Performance Electroactive Polymer Actuators Based on Ultrathick Ionic Polymer–Metal Composites with Nanodispersed Metal Electrodes,ACS Applied Materials & Interfaces

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High-Performance Electroactive Polymer Actuators Based on Ultrathick Ionic Polymer–Metal Composites with Nanodispersed Metal Electrodes
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2017-06-21 00:00:00 , DOI: 10.1021/acsami.7b04779
Hyuck Sik Wang _{1,

2} , Jaehyun Cho ₁ , Dae Seok Song ₁ , Jong Hyun Jang , Jae Young Jho ₁ , Jong Hyuk Park

Affiliation

Ionic polymer–metal composites (IPMCs) have been proposed as biomimetic actuators that are operable at low applied voltages. However, the bending strain and generating force of the IPMC actuators have generally exhibited a trade-off relationship, whereas simultaneous enhancement of both the qualities is required for their practical applications. Herein, a significant improvement in both the strain and force of the IPMC actuators is achieved by a facile approach, exploiting thickness-controlled ion-exchange membranes and nanodispersed metal electrodes. To guarantee a large generating force of the IPMC actuators, ultrathick ion-exchange membranes are prepared by stacking pre-extruded Nafion films. Metal electrodes with a nanodispersed structure are formed on the membranes via alcohol-assisted electroless plating, which allows increased capacitance and facilitated ion transport. The resulting actuators exhibit greatly enhanced electromechanical properties, including an approximately four times larger strain and two times larger force compared to those of actuators having the conventional structure. Moreover, the ability to lift 16 coins (a weight of 124 g) has been successfully demonstrated using ultrathick IPMC actuators, which shows great promise in realizing artificial muscles.

中文翻译：

基于超薄离子聚合物-纳米分散金属电极的金属复合材料的高性能电活性聚合物致动器

离子聚合物-金属复合材料（IPMC）已被提议作为仿生致动器，可在低施加电压下运行。然而，IPMC致动器的弯曲应变和产生力通常呈现出折衷的关系，而对于它们的实际应用而言，需要同时提高两种质量。在本文中，利用厚度控制离子交换膜和纳米分散金属电极的简便方法，可以实现IPMC致动器的应变和力的显着改善。为了确保IPMC执行器具有较大的产生力，可通过堆叠预挤出的Nafion膜来制备超厚的离子交换膜。通过酒精辅助化学镀在膜上形成具有纳米分散结构的金属电极，这样可以增加电容并促进离子传输。与具有常规结构的致动器相比，所得到的致动器具有大大增强的机电性能，包括大约四倍大的应变和两倍大的力。此外，使用超厚IPMC执行器已成功证明了提起16个硬币（重124克）的能力，这在实现人造肌肉方面显示出巨大的希望。

更新日期：2017-06-28

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