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Title: Synergetic effects of K + and Mg 2+ ion intercalation on the electrochemical and actuation properties of the two-dimensional Ti 3 C 2 MXene

Journal Article · · Faraday Discussions
DOI:https://doi.org/10.1039/C6FD00251J· OSTI ID:1408018

Two-dimensional materials, such as MXenes, are attractive candidates for energy storage and electrochemical actuators due to their high volume changes upon ion intercalation. Of special interest for boosting energy storage is the intercalation of multivalent ions such as Mg2+, which suffers from sluggish intercalation and transport kinetics due to its ion size. By combining traditional electrochemical characterization techniques with electrochemical dilatometry and contact resonance atomic force microscopy, the synergetic effects of the pre-intercalation of K+ions are demonstrated to improve the charge storage of multivalent ions, as well as tune the mechanical and actuation properties of the Ti3C2MXene. Our results have important implications for quantitatively understanding the charge storage processes in intercalation compounds and provide a new path for studying the mechanical evolution of energy storage materials.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1408018
Journal Information:
Faraday Discussions, Vol. 199, Issue 1; ISSN 1359-6640
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 46 works
Citation information provided by
Web of Science

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Cited By (8)

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The Origin of Electrochemical Actuation of MnO 2 /Ni Bilayer Film Derived by Redox Pseudocapacitive Process journal January 2019
MXene‐Based Composites: Synthesis and Applications in Rechargeable Batteries and Supercapacitors journal February 2019
High Lithium‐Ion Storage Performance of Ti 3 SiC 2 MAX by Oxygen Doping journal May 2019
Surface Modified MXene‐Based Nanocomposites for Electrochemical Energy Conversion and Storage journal May 2019
pH-Response of polycation/Ti 3 C 2 T x MXene layer-by-layer assemblies for use as resistive sensors journal January 2020
Mechanochemical engineering of 2D materials for multiscale biointerfaces journal January 2019
A hydrofluoric acid-free synthesis of 2D vanadium carbide (V 2 C) MXene for supercapacitor electrodes journal January 2020