Publication date: 11th July 2022
The basal plane of graphene is impermeable to all atoms and molecules - even for helium, the smallest - at ambient conditions [1]. Nevertheless, it is permeable to thermal protons [2]. This talk will provide an overview of our investigation of permeation of protons and other small ions through new 2D materials [3-5], including the unexpectedly fast ion exchange properties of atomically thin clays and micas [6].
References
[1] Bunch, J. S. et al. Impermeable atomic membranes from graphene sheets. Nano Lett. (2008)
[2] Hu, S. et al. Proton transport through one-atom-thick crystals. Nature (2014).
[3] Mogg, L. et al. Atomically-thin micas as proton conduting membranes. Nat. Nano (2019).
[4] Mogg. L. et al. Perfect proton selectivity in ion transport through two-dimensional crystals. Nat. Commun. (2019).
[5] Griffin, E. et al. Proton and Li-Ion Permeation through Graphene with Eight-Atom-Ring Defects. ACS Nano (2020).
[6] Y.-C. Zhou et al, Ion exchange in atomically thin clays and micas. Nat. Materials (2021).
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