Over the past few years, ionic conductors have gained a lot of attention because of the possibility of implementing them in various applications such as supercapacitors, batteries or fuel cells, and resistive memories. Especially, layered two-dimensional (2D) crystals, such as h-BN, graphene oxide, and , have been shown to provide unique properties originating from the specific 2D confinement of moving ions. Two important parameters are the ion conductivity and the chemical stability over a wide range of operating conditions. In this vein, (RTO) has recently been found displaying remarkable properties such as superionic conduction and equivalent colossal dielectric constant. Here, an approach to the study of the electrical properties of the layered RTO 100-nm scale is presented. Characterizations by means of micro-Raman spectroscopy and atomic force microscopy measurements of mechanically exfoliated RTO micro-flakes via the so-called adhesive-tape technique are reported. Finally, the results of electrical measurements performed on an exfoliated RTO micro-flake are presented and are found to be consistent with the results obtained on macroscopic bulk crystals.
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6 January 2025
Research Article|
January 06 2025
: A layered ionic conductor at the sub-micrometer scale
Valerio Digiorgio
;
Valerio Digiorgio
a)
(Conceptualization, Formal analysis, Investigation, Methodology)
1
Université Paris Cité, Laboratoire Matériaux et Phénomènes Quantiques, CNRS, UMR 7162
, 75013 Paris, France
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Karen Sobnath
;
Karen Sobnath
(Conceptualization, Investigation)
1
Université Paris Cité, Laboratoire Matériaux et Phénomènes Quantiques, CNRS, UMR 7162
, 75013 Paris, France
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Maria Luisa Della Rocca
;
Maria Luisa Della Rocca
(Investigation, Writing – original draft)
1
Université Paris Cité, Laboratoire Matériaux et Phénomènes Quantiques, CNRS, UMR 7162
, 75013 Paris, France
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Clément Barraud
;
Clément Barraud
b)
(Conceptualization, Investigation, Methodology, Supervision, Validation, Writing – original draft)
1
Université Paris Cité, Laboratoire Matériaux et Phénomènes Quantiques, CNRS, UMR 7162
, 75013 Paris, France
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Rémi Federicci;
Rémi Federicci
(Conceptualization, Formal analysis, Investigation, Methodology, Resources)
2
Pioniq Technologies
, 6 rue Jean Calvin, 75005 Paris, France
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Armel Descamps-Mandine
;
Armel Descamps-Mandine
c)
(Investigation)
3
LPEM-ESPCI Paris, PSL Research University, CNRS, Sorbonne Université
, 10 rue Vauquelin, 75005 Paris, France
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Brigitte Leridon
Brigitte Leridon
b)
(Conceptualization, Investigation, Supervision, Validation, Writing – original draft)
2
Pioniq Technologies
, 6 rue Jean Calvin, 75005 Paris, France
3
LPEM-ESPCI Paris, PSL Research University, CNRS, Sorbonne Université
, 10 rue Vauquelin, 75005 Paris, France
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Appl. Phys. Lett. 126, 013506 (2025)
Article history
Received:
June 27 2024
Accepted:
December 22 2024
Citation
Valerio Digiorgio, Karen Sobnath, Maria Luisa Della Rocca, Clément Barraud, Rémi Federicci, Armel Descamps-Mandine, Brigitte Leridon; : A layered ionic conductor at the sub-micrometer scale. Appl. Phys. Lett. 6 January 2025; 126 (1): 013506. https://doi.org/10.1063/5.0225828
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