Superionic lithium transport via multiple coordination environments defined by two-anion packing



Han, Guopeng ORCID: 0000-0003-3861-5396, Vasylenko, Andrij ORCID: 0000-0002-6933-0628, Daniels, Luke M ORCID: 0000-0002-7077-6125, Collins, Chris M ORCID: 0000-0002-0101-4426, Corti, Lucia, Chen, Ruiyong ORCID: 0000-0002-5340-248X, Niu, Hongjun, Manning, Troy D ORCID: 0000-0002-7624-4306, Antypov, Dmytro ORCID: 0000-0003-1893-7785, Dyer, Matthew S ORCID: 0000-0002-4923-3003
et al (show 12 more authors) (2024) Superionic lithium transport via multiple coordination environments defined by two-anion packing. Science, 383 (6684). pp. 739-745.

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Abstract

<jats:p> Fast cation transport in solids underpins energy storage. Materials design has focused on structures that can define transport pathways with minimal cation coordination change, restricting attention to a small part of chemical space. Motivated by the greater structural diversity of binary intermetallics than that of the metallic elements, we used two anions to build a pathway for three-dimensional superionic lithium ion conductivity that exploits multiple cation coordination environments. Li <jats:sub>7</jats:sub> Si <jats:sub>2</jats:sub> S <jats:sub>7</jats:sub> I is a pure lithium ion conductor created by an ordering of sulphide and iodide that combines elements of hexagonal and cubic close-packing analogously to the structure of NiZr. The resulting diverse network of lithium positions with distinct geometries and anion coordination chemistries affords low barriers to transport, opening a large structural space for high cation conductivity. </jats:p>

Item Type: Article
Uncontrolled Keywords: 7 Affordable and Clean Energy
Divisions: Faculty of Science and Engineering > School of Engineering
Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 16 Feb 2024 11:30
Last Modified: 14 Mar 2024 19:05
DOI: 10.1126/science.adh5115
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3178738