Structure Determination of the Crystalline LiPON Model Structure Li5+x P2 O6-x N1+x with x≈0.9.
Chemistry
; 29(9): e202202984, 2023 Feb 10.
Article
en En
| MEDLINE
| ID: mdl-36382621
ABSTRACT
Non-crystalline lithium oxonitridophosphate (LiPON) is used as solid electrolyte in all-solid-state batteries. Crystalline lithium oxonitridophosphates are important model structures to retrieve analytical information that can be used to understand amorphous phases better. The new crystalline lithium oxonitridophosphate Li5+x P2 O6-x N1+x was synthesized as an off-white powder by ampoule synthesis at 750-800 °C under Ar atmosphere. It crystallizes in the monoclinic space group P21 /c with a=15.13087(11)â
Å, b=9.70682(9)â
Å, c=8.88681(7)â
Å, and ß=106.8653(8)°. Two P(O,N)4 tetrahedra connected by an N atom form the structural motif [P2 O6-x N1+x ](5+x)- . The structure was elucidated from X-ray diffraction data and the model corroborated by NMR and infrared spectroscopy, and elemental analyses. Measurements of ionic conductivity show a total ionic conductivity of 6.8×10-7 S cm-1 at 75 °C with an activation energy of 0.52±0.01â
eV.
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MEDLINE
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En
Revista:
Chemistry
Asunto de la revista:
QUIMICA
Año:
2023
Tipo del documento:
Article
País de afiliación:
Alemania