Molecular-level methylcellulose/mxene hybrids with greatly enhanced electrochemical actuation

Ti₃C₂Tₓ MXene film is promising for electrochemical actuators due to its high electrical conductivity and volumetric capacitance. However, its actuation performance is limited by the slow ion diffusion through the film and poor mechanical property in aqueous electrolytes. Here, molecular-level methy...

Full description

Saved in:
Bibliographic Details
Main Authors: Chen, Shaohua, Ciou, Jing-Hao, Yu, Fei, Chen, Jian, Lv, Jian, Lee, Pooi See
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2022
Subjects:
Online Access:https://hdl.handle.net/10356/162060
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-162060
record_format dspace
spelling sg-ntu-dr.10356-1620602023-07-14T15:54:37Z Molecular-level methylcellulose/mxene hybrids with greatly enhanced electrochemical actuation Chen, Shaohua Ciou, Jing-Hao Yu, Fei Chen, Jian Lv, Jian Lee, Pooi See School of Materials Science and Engineering Engineering::Materials Science::Chemistry::Physical chemistry::Electrochemistry Ionic Actuators Lithium Bromide Methylcellulose Ti3C2Tx MXene Films Ti₃C₂Tₓ MXene film is promising for electrochemical actuators due to its high electrical conductivity and volumetric capacitance. However, its actuation performance is limited by the slow ion diffusion through the film and poor mechanical property in aqueous electrolytes. Here, molecular-level methylcellulose (MC)/MXene hybrid films are assembled with obviously enlarged layer distance, improved wet strength, and ambient stability. The hybrid films show significantly higher in-plane actuation strain in a liquid electrolyte. Based on direct strain measurements, in situ X-ray diffraction (XRD) and ex situ X-ray photoelectron spectroscopy (XPS) analyses, the actuation enhancement can be ascribed to the enlarged layer distance allowing more water and ions to be intercalated/de-intercalated and MC-induced sliding of MXene sheets. The assembled soft actuator has a high Young's modulus of 1.93 GPa and can be operated in air, generating a peak-to-peak strain difference up to 0.541% under a triangular wave voltage of ±1 V and a blocking force of 4.7 times its own weight. Ministry of Education (MOE) National Research Foundation (NRF) Submitted/Accepted version The authors acknowledge the funding provided by Ministry of Education under project no. 2020-T1-001-165. Part of this work is also supported by grant no. NRF2020-NRF-ANR102 MEACT under the National Research Foundation, Singapore. 2022-10-03T04:27:50Z 2022-10-03T04:27:50Z 2022 Journal Article Chen, S., Ciou, J., Yu, F., Chen, J., Lv, J. & Lee, P. S. (2022). Molecular-level methylcellulose/mxene hybrids with greatly enhanced electrochemical actuation. Advanced Materials, 34(29), e2200660-. https://dx.doi.org/10.1002/adma.202200660 0935-9648 https://hdl.handle.net/10356/162060 10.1002/adma.202200660 35584538 2-s2.0-85131727818 29 34 e2200660 en 2020-T1-001-165 NRF2020-NRF-ANR102 MEACT Advanced Materials © 2022 Wiley-VCH GmbH. All rights reserved. This is the peer reviewed version of the following article: Chen, S., Ciou, J., Yu, F., Chen, J., Lv, J. & Lee, P. S. (2022). Molecular-level methylcellulose/mxene hybrids with greatly enhanced electrochemical actuation. Advanced Materials, 34(29), e2200660-, which has been published in final form at https://doi.org/10.1002/adma.202200660. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
Science::Chemistry::Physical chemistry::Electrochemistry
Ionic Actuators
Lithium Bromide
Methylcellulose
Ti3C2Tx MXene Films
spellingShingle Engineering::Materials
Science::Chemistry::Physical chemistry::Electrochemistry
Ionic Actuators
Lithium Bromide
Methylcellulose
Ti3C2Tx MXene Films
Chen, Shaohua
Ciou, Jing-Hao
Yu, Fei
Chen, Jian
Lv, Jian
Lee, Pooi See
Molecular-level methylcellulose/mxene hybrids with greatly enhanced electrochemical actuation
description Ti₃C₂Tₓ MXene film is promising for electrochemical actuators due to its high electrical conductivity and volumetric capacitance. However, its actuation performance is limited by the slow ion diffusion through the film and poor mechanical property in aqueous electrolytes. Here, molecular-level methylcellulose (MC)/MXene hybrid films are assembled with obviously enlarged layer distance, improved wet strength, and ambient stability. The hybrid films show significantly higher in-plane actuation strain in a liquid electrolyte. Based on direct strain measurements, in situ X-ray diffraction (XRD) and ex situ X-ray photoelectron spectroscopy (XPS) analyses, the actuation enhancement can be ascribed to the enlarged layer distance allowing more water and ions to be intercalated/de-intercalated and MC-induced sliding of MXene sheets. The assembled soft actuator has a high Young's modulus of 1.93 GPa and can be operated in air, generating a peak-to-peak strain difference up to 0.541% under a triangular wave voltage of ±1 V and a blocking force of 4.7 times its own weight.
author2 School of Materials Science and Engineering
author_facet School of Materials Science and Engineering
Chen, Shaohua
Ciou, Jing-Hao
Yu, Fei
Chen, Jian
Lv, Jian
Lee, Pooi See
format Article
author Chen, Shaohua
Ciou, Jing-Hao
Yu, Fei
Chen, Jian
Lv, Jian
Lee, Pooi See
author_sort Chen, Shaohua
title Molecular-level methylcellulose/mxene hybrids with greatly enhanced electrochemical actuation
title_short Molecular-level methylcellulose/mxene hybrids with greatly enhanced electrochemical actuation
title_full Molecular-level methylcellulose/mxene hybrids with greatly enhanced electrochemical actuation
title_fullStr Molecular-level methylcellulose/mxene hybrids with greatly enhanced electrochemical actuation
title_full_unstemmed Molecular-level methylcellulose/mxene hybrids with greatly enhanced electrochemical actuation
title_sort molecular-level methylcellulose/mxene hybrids with greatly enhanced electrochemical actuation
publishDate 2022
url https://hdl.handle.net/10356/162060
_version_ 1772828708343644160