Result Introduction
Conductive metal-organic frameworks (MOFs) have recently been applied in electroactive ion actuators due to their high surface area and fast ion migration. However, their driving performance needs to be improved in terms of high conversion efficiency and large strain. In this article, Suzhou Institute of Nanotechnology, Chinese Academy of Sciences Zhang Jue’s research group published a paper titled "Hierarchical Carbon Nanotube-Supported Conductive Metal–Organic Framework Nanosheet toward High-Strain Ionic Soft Actuator" in the journal "Adv. Mater. Technol". The research passed the design Soft ion actuators were assembled with layered Cu-MOFs-based active materials composed of conductive catechol (Cu-CAT) covalently bridged through carboxyl multi-walled carbon nanotubes (Cu-CAT@MWCNT) Made of nanosheets.
Benefiting from the large electromechanical deformation and fast response rate of the Cu-CAT@MWCNT electrode, the assembled soft actuator has a large displacement of 16.6 mm and a high bending strain of 0.52% ( AC of ±3 V ) and high energy. Conversion efficiency (3.02%) with cycle stability of over 10 000 cycles (frequency range 0. 1-10 Hz). Additionally, the ability to grasp objects when assembled on a robot was demonstrated. Electrodes based on Cu-CAT@MWCNT hybrid materials point out a feasible way to build soft actuators with improved performance and broaden their applications
Graphic introduction
Figure 1. Preparation of rod-like Cu-CAT@MWCNT and its structure and physics Characterization
Figure 2. Physical and chemical characterization of the synthesized Cu-CAT@MWCNT electrode material
3. electrochemical performance of rod-shaped Cu-CAT@MWCNT.
Figure 4. Electrochemical characterization of the actuator
Figure 5. Execution performance of the actuator based on Cu-CAT@MWCNT/PVDF
Summary
In summary, by integrating with carboxyl MWCNT (Cu-CAT@MWCNT) Active electrodes composed of bridged conductive Cu-CAT nanosheets develop a synergistic strategy for high-performance ionic soft actuators. Benefiting from the synergistic effect of Cu-CAT nanosheets and MWCNTs, the actuator exhibits good driving performance with high bending strain, high energy conversion efficiency, and excellent driving stability, which can be attributed to the hierarchical porous structure and electrical conductivity. Sexual coupling . The authors believe that this synergistic strategy can open a potential avenue for the rational design of high-performance electrochemical actuators for a wide range of applications.
Literature:
https://doi.org/10.1002/admt.202200258
