Author:
Ren Ming,Dong Lizhong,Wang Xiaobo,Li Yuxin,Zhao Yueran,Cui Bo,Yang Guang,Li Wei,Yuan Xiaojie,Zhou Tao,Xu Panpan,Wang Xiaona,Di Jiangtao,Li Qingwen
Abstract
AbstractArtificial yarn muscles show great potential in applications requiring low-energy consumption while maintaining high performance. However, conventional designs have been limited by weak ion-yarn muscle interactions and inefficient “rocking-chair” ion migration. To address these limitations, we present an electrochemical artificial yarn muscle design driven by a dual-ion co-regulation system. By utilizing two reaction channels, this system shortens ion migration pathways, leading to faster and more efficient actuation. During the charging/discharging process, $${\text{PF}}_{6}^{ - }$$
PF
6
-
ions react with carbon nanotube yarn, while Li+ ions react with an Al foil. The intercalation reaction between $${\text{PF}}_{6}^{ - }$$
PF
6
-
and collapsed carbon nanotubes allows the yarn muscle to achieve an energy-free high-tension catch state. The dual-ion coordinated yarn muscles exhibit superior contractile stroke, maximum contractile rate, and maximum power densities, exceeding those of “rocking-chair” type ion migration yarn muscles. The dual-ion co-regulation system enhances the ion migration rate during actuation, resulting in improved performance. Moreover, the yarn muscles can withstand high levels of isometric stress, displaying a stress of 61 times that of skeletal muscles and 8 times that of “rocking-chair” type yarn muscles at higher frequencies. This technology holds significant potential for various applications, including prosthetics and robotics.
Funder
Shanghai Jiao Tong University
Publisher
Springer Science and Business Media LLC
Subject
Electrical and Electronic Engineering,Surfaces, Coatings and Films,Electronic, Optical and Magnetic Materials
Cited by
2 articles.
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