Novel two-dimensional conductive metal-organic framework-based heterostructures for high-performance electro-ionic soft actuators

Current ionic artificial muscle technology necessitates a significant technological advancement to achieve increased bending strain, enhanced response rates, and prolonged stability while ensuring consistent and reliable performance across various stimuli. In this study, we aimed to develop an artif...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2024-10, Vol.12 (4), p.27549-27557
Main Authors: Wang, Yingyi, Li, Shengzhao, Liu, Lin, Feng, Simin, Guan, Kejie, Shi, Yixiang, Sun, Fuqin, Wang, Xiaowei, Shen, Yaochun, Zhang, Cheng, Liu, Qianzuo, Li, Tie, Zhang, Ting, Qin, Sujie
Format: Article
Language:English
Subjects:
Actuators
Artificial muscles
Bending
Electrical stimuli
Heterostructures
Metal-organic frameworks
Muscle contraction
Muscles
Nanocomposites
Stability
Structural reliability
Zinc oxide
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Summary:Current ionic artificial muscle technology necessitates a significant technological advancement to achieve increased bending strain, enhanced response rates, and prolonged stability while ensuring consistent and reliable performance across various stimuli. In this study, we aimed to develop an artificial muscle based on a novel nanocomposite composed of ionically cross-linked ZnO@Zn-CAT with poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), showing an ultrafast rise time of less than 1.56 s in DC responses, an extremely large bending strain up to 1.22% in a very low input voltage regime (0.1 to 3 V), a long-term cycling stability of 97% up to 10 000 cycles, markedly reduced phase delay, and a very broad frequency bandwidth up to 20 Hz with good structural reliability under continuous electrical stimuli. Most importantly, the proposed ZnO@Zn-CAT-based soft actuator exhibits a remarkably enhanced strain of 2.38% and a blocking force of 66 mN under an extra 700 nm light stimulation, allowing for the realization of complex next-generation soft robotic devices, including wearable electronics and artificial muscles. Current artificial muscle technology necessitates a significant technological advancement to increase bending strain, enhance response rates, and prolong stability while ensuring consistent and reliable performance across various stimuli.
ISSN:2050-7488
2050-7496
DOI:10.1039/d4ta04514a