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Electrochemical Actuators Based on Two-Dimensional Ti3C2Tx (MXene)
Journal article   Open access   Peer reviewed

Electrochemical Actuators Based on Two-Dimensional Ti3C2Tx (MXene)

Di Pang, Mohamed Alhabeb, Xinpeng Mu, Yohan Dall'Agnese, Yury Gogotsi and Yu Gao
Nano letters, v 19(10), pp 7443-7448
09 Oct 2019
PMID: 31536705
url
https://discovery.ucl.ac.uk/id/eprint/10082233/View

Abstract

Chemistry Chemistry, Multidisciplinary Chemistry, Physical Materials Science, Multidisciplinary Nanoscience & Nanotechnology Physics, Applied Physics, Condensed Matter Science & Technology Science & Technology - Other Topics Materials Science Physical Sciences Physics Technology
Electrochemical actuators are devices that convert electrical energy into mechanical energy via electrochemical processes. They are used in soft robotics, artificial muscles, micropumps, sensors, and other fields. The design of flexible and stable electrode materials remains a major challenge. MXenes, an emerging family of 2D materials, have found applications in energy storage. Here, we report an actuator device using MXene (Ti3C2Tx) as a flexible electrode material. The electrode in 1 M H2SO4 electrolyte exhibits a curvature change up to 0.083 mm(-1) and strain of 0.29%. Meanwhile, the MXene-based actuator with a symmetric configuration separated by gel electrolyte (PVA-H2SO4) has curvature and strain changes up to 0.038 min(-1) and 0.26% with excellent retention after 10,000 cycles. In situ X-ray diffraction analysis demonstrates that the actuation mechanism is due to the expansion and shrinkage of the interlayer spacing of MXenes. This research shows promise of this new family of materials for electrochemical actuators.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Chemistry, Multidisciplinary
Chemistry, Physical
Materials Science, Multidisciplinary
Nanoscience & Nanotechnology
Physics, Applied
Physics, Condensed Matter
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