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Lithium-ion Mobility in Li 6 B 18 (Li 3 N) and Li Vacancy Tuning in the Solid Solution Li 6 B 18 (Li 3 N) 1-x (Li 2 O) x

Restle, Tassilo M F ; Scherf, Lavinia ; Dums, Jasmin V ; Mutschke, Alexander G ; Spranger, Robert J ; Kirchhain, Holger ; Karttunen, Antti J ; van Wüllen, Leo ; Fässler, Thomas F

Angewandte Chemie (International ed.), 2023-03, Vol.62 (10), p.e202213962 [Periódico revisado por pares]

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Título:
Lithium-ion Mobility in Li 6 B 18 (Li 3 N) and Li Vacancy Tuning in the Solid Solution Li 6 B 18 (Li 3 N) 1-x (Li 2 O) x
Autor: Restle, Tassilo M F ; Scherf, Lavinia ; Dums, Jasmin V ; Mutschke, Alexander G ; Spranger, Robert J ; Kirchhain, Holger ; Karttunen, Antti J ; van Wüllen, Leo ; Fässler, Thomas F
É parte de: Angewandte Chemie (International ed.), 2023-03, Vol.62 (10), p.e202213962
Descrição: All-solid-state batteries are promising candidates for safe energy-storage systems due to non-flammable solid electrolytes and the possibility to use metallic lithium as an anode. Thus, there is a challenge to design new solid electrolytes and to understand the principles of ion conduction on an atomic scale. We report on a new concept for compounds with high lithium ion mobility based on a rigid open-framework boron structure. The host-guest structure Li B (Li N) comprises large hexagonal pores filled with Li N] strands that represent a perfect cutout from the structure of α-Li N. Variable-temperature Li NMR spectroscopy reveals a very high Li mobility in the template phase with a remarkably low activation energy below 19 kJ mol and thus much lower than pristine Li N. The formation of the solid solution of Li B (Li N) and Li B (Li O) over the complete compositional range allows the tuning of lithium defects in the template structure that is not possible for pristine Li N and Li O.
Editor: Germany
Idioma: Inglês

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