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Electrochemically modulated interaction of MXenes with microwaves

by Gogotsi, Yury , Wang, Ruocun (John) , Zhang, Teng , Shuck, Christopher E. , McBride, Bernard , Zhang, Danzhen , Shevchuk, Kateryna , Han, Meikang

in 639/301/1005/1007 / 639/638/161 / 639/766/1130/2798 / Absorption / Charge efficiency / Charge transfer / Chemistry and Materials Science / Dynamic control / Electrochemical oxidation / Electrochemistry / Electrodes / Electrolytes / Electromagnetic interference / Electromagnetic radiation / Electromagnetic shielding / Electronic devices / Electronic equipment / Graphene / Intercalation / Jamming / Materials Science / Metals / Microwaves / MXenes / Nanomaterials / Nanotechnology / Nanotechnology and Microengineering / Oxidation / Thick films / Thin films

2023

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Electrochemically modulated interaction of MXenes with microwaves

by Gogotsi, Yury , Wang, Ruocun (John) , Zhang, Teng , Shuck, Christopher E. , McBride, Bernard , Zhang, Danzhen , Shevchuk, Kateryna , Han, Meikang

2023

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Electrochemically modulated interaction of MXenes with microwaves

by Gogotsi, Yury , Wang, Ruocun (John) , Zhang, Teng , Shuck, Christopher E. , McBride, Bernard , Zhang, Danzhen , Shevchuk, Kateryna , Han, Meikang

2023

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Journal Article

Electrochemically modulated interaction of MXenes with microwaves

Gogotsi, Yury,

Wang, Ruocun (John),

Zhang, Teng,

Shuck, Christopher E.,

McBride, Bernard,

Zhang, Danzhen,

Shevchuk, Kateryna,

Han, Meikang

2023

Overview

Dynamic control of electromagnetic wave jamming is a notable technological challenge for protecting electronic devices working at gigahertz frequencies. Foam materials can adjust the reflection and absorption of microwaves, enabling a tunable electromagnetic interference shielding capability, but their thickness of several millimetres hinders their application in integrated electronics. Here we show a method for modulating the reflection and absorption of incident electromagnetic waves using various submicrometre-thick MXene thin films. The reversible tunability of electromagnetic interference shielding effectiveness is realized by electrochemically driven ion intercalation and de-intercalation; this results in charge transfer efficiency with different electrolytes, accompanied by expansion and shrinkage of the MXene layer spacing. We finally demonstrate an irreversible electromagnetic interference shielding alertor through electrochemical oxidation of MXene films. In contrast with static electromagnetic interference shielding, our method offers opportunities to achieve active modulation that can adapt to demanding environments. Modulating the interaction of a thin film with microwaves is realized using the electrochemical behaviours of various MXenes.

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Publisher

Nature Publishing Group UK,Nature Publishing Group

Subject

/ Chemistry and Materials Science