Ionic Covalent Organic Framework Based Electrolyte for Fast-response Ultra-low Voltage Electrochemical Actuators

Overview

Journal Nat Commun

Specialty Biology

Date 2022 Jan 20

PMID 35046389

Authors

Fei Yu

Jing-Hao Ciou

Shaohua Chen

Wei Church Poh

Jian Chen

Juntong Chen

Kongcharoen Haruethai

Jian Lv

Dace Gao

Pooi See Lee

Affiliations

Soon will be listed here.

Abstract

Electrically activated soft actuators with large deformability are important for soft robotics but enhancing durability and efficiency of electrochemical actuators is challenging. Herein, we demonstrate that the actuation performance of an ionic two-dimensional covalent-organic framework based electrochemical actuator is improved through the ordered pore structure of opening up efficient ion transport routes. Specifically, the actuator shows a large peak to peak displacement (9.3 mm, ±0.5 V, 1 Hz), a fast-response time to reach equilibrium-bending (~1 s), a correspondingly high bending strain difference (0.38%), a broad response frequency (0.1-20 Hz) and excellent durability (>99%) after 23,000 cycles. The present study ascertains the functionality of soft electrolyte as bionic artificial actuators while providing ideas for expanding the limits in applications for robots.

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