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Ionic gating for ion intercalation

Nature Reviews Physics volume 3, page 306 (2021)Cite this article

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Ion-intercalation is a method used to alter the properties of materials by inserting ions into layered materials (pictured). Intercalating ions into layered materials increases the spacing and decreases the coupling between the layered unit cells. Therefore, the intercalation can modify the crystal and electronic structures of the host materials.

Conventionally, ion intercalation is done by ion beam implanting and element doping methods. However, ion beam implanting is limited to surface layers and element doping often leads to dopant clusters. An alternative approach is to use ionic liquid gating as the ions can get into the interlayer spaces and form chemical bonds with the atoms of the host material. This method is quite effective and simple to use compared with conventional ion beam implanting and element doping methods.

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Acknowledgements

I would like to thank Prof. Xiaolin Wang and Dr. Frank Fei Yun for valuable discussion. This article is partially supported by ARC Centre of Excellence in Future Low-Energy Electronics Technologies (CE170100039).

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  1. ARC Centre for Future Low-Energy Electronics Technologies, Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, Australia

    Zengji Yue

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  1. Zengji Yue
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Correspondence to Zengji Yue.

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Yue, Z. Ionic gating for ion intercalation. Nat Rev Phys 3, 306 (2021). https://doi.org/10.1038/s42254-021-00311-8

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