Efficient Electron Channels Based on Pt/Au Composite Electrode Enabling Enhanced Electromechanical Performance and Extended Lifetime of Interactive Ionic Actuators

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-06-05 DOI:10.1021/acs.nanolett.5c01180

Hao Zhang, Suqian Ma, Zirui Liu, Yifan Li, Hui Xu, Lei Ren, Yunhong Liang, Luquan Ren

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引用次数: 0

Abstract

Ionic polymer–metal composites (IPMCs) are a class of low-voltage-driven ionic actuators that have drawn much attention in soft robotics. However, conventional IPMC actuators are plagued with practicality because of cracked electrodes, blocked electron transmission, and electrolyte loss, which would cause degradation in actuation performance and lifetime. Herein, IPMC with high-quality Pt/Au composite electrodes was developed, which achieved superior electromechanical properties and extended lifetime by improved electrode morphology and efficient electron channels. On one hand, the Au layer enables efficient charge transfer, resulting in 27% larger displacement compared to the Pt IPMC. Moreover, the Au layer enhances the water retention of IPMCs during operation, making it 6.15 times longer in lifetime. Finally, the interactive function of the Pt/Au IPMC was demonstrated in a bionic butterfly and a soft prosthesis. This work can provide insight into the development of high-performance actuators and pave the way for practical applications of IPMCs in robotics.

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基于Pt/Au复合电极的高效电子通道，增强了相互作用离子致动器的机电性能和寿命

离子聚合物-金属复合材料（IPMCs）是一类低压驱动离子驱动器，在软机器人领域受到广泛关注。然而，传统的IPMC致动器由于电极断裂、电子传输受阻、电解质损失等问题，导致致动器性能和使用寿命下降，实用性受到影响。在此基础上，开发了具有高质量Pt/Au复合电极的IPMC，通过改善电极形貌和有效的电子通道，实现了优异的机电性能和延长的使用寿命。一方面，Au层实现了高效的电荷转移，与Pt IPMC相比，其位移增加了27%。此外，金层增强了ipmc在运行过程中的保水性，使其寿命延长6.15倍。最后，在仿生蝴蝶和软性假体中展示了铂/金IPMC的交互作用。这项工作可以为高性能执行器的发展提供见解，并为ipmc在机器人技术中的实际应用铺平道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.