Low dimensional nanostructures of fast ion conducting lithium nitride

Nuria Tapia-Ruiz, Alexandra G. Gordon, Catherine M. Jewell, Hannah K. Edwards, Charles W. Dunnill, James M. Blackman, Colin P. Snape, Paul D. Brown, Ian MacLaren, Matteo Baldoni, Elena Besley, Jeremy J. Titman and Duncan H. Gregory ()
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Nuria Tapia-Ruiz: University of Glasgow
Alexandra G. Gordon: University of Nottingham
Catherine M. Jewell: University of Glasgow
Hannah K. Edwards: University of Nottingham
Charles W. Dunnill: University of Glasgow
James M. Blackman: University of Nottingham
Colin P. Snape: University of Nottingham
Paul D. Brown: University of Nottingham
Ian MacLaren: University of Glasgow
Matteo Baldoni: University of Nottingham
Elena Besley: University of Nottingham
Jeremy J. Titman: University of Nottingham
Duncan H. Gregory: University of Glasgow

Nature Communications, 2020, vol. 11, issue 1, 1-8

Abstract: Abstract As the only stable binary compound formed between an alkali metal and nitrogen, lithium nitride possesses remarkable properties and is a model material for energy applications involving the transport of lithium ions. Following a materials design principle drawn from broad structural analogies to hexagonal graphene and boron nitride, we demonstrate that such low dimensional structures can also be formed from an s-block element and nitrogen. Both one- and two-dimensional nanostructures of lithium nitride, Li3N, can be grown despite the absence of an equivalent van der Waals gap. Lithium-ion diffusion is enhanced compared to the bulk compound, yielding materials with exceptional ionic mobility. Li3N demonstrates the conceptual assembly of ionic inorganic nanostructures from monolayers without the requirement of a van der Waals gap. Computational studies reveal an electronic structure mediated by the number of Li-N layers, with a transition from a bulk narrow-bandgap semiconductor to a metal at the nanoscale.

Date: 2020
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DOI: 10.1038/s41467-020-17951-6

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