Ionic Conductivity of the NASICON‐Related Thiophosphate Na 1+ x  Ti 2− x  Ga  x  (PS 4 ) 3 | Zendy

Schlem Roman | Zendy; Till Paul | Zendy; Weiss Manuel | Zendy; Krauskopf Thorben | Zendy; Culver Sean P. | Zendy; Zeier Wolfgang G. | Zendy

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Ionic Conductivity of the NASICON‐Related Thiophosphate Na 1+ x Ti 2− x Ga x (PS 4 ) 3

Author(s) -

Schlem Roman,

Till Paul,

Weiss Manuel,

Krauskopf Thorben,

Culver Sean P.,

Zeier Wolfgang G.

Publication year - 2019

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.201805569

Subject(s) - thiophosphate , ionic bonding , ionic conductivity , fast ion conductor , dicyanamide , conductivity , valence (chemistry) , inorganic chemistry , materials science , chemistry , crystallography , electrolyte , ion , ionic liquid , biochemistry , organic chemistry , electrode , catalysis

Inspired by the recent interest in fast ionic conducting solids for electrolytes, the ionic conductivity of a novel ionic conductor Na 1+ x Ti 2− x Ga x (PS 4 ) 3 has been investigated. Using X‐ray diffraction and impedance spectroscopy the sodium ionic conductivity in this compound was demonstrated, in which bond valence sum analysis suggests a tunnel diffusion for Na + . Substitution with Ga 3+ leads to an increasing Na + content, an expansion of the lattice and an increasing conductivity with increasing x in Na 1+ x Ti 2− x Ga x (PS 4 ) 3 . Given the relation to the NASICON family, upon replacement of the phosphate by a thiophosphate group, a rich structural chemistry can be expected in this class of materials. This work demonstrates the potential for making NaTi 2 (PS 4 ) 3 an ideal system to study structure‐property relationships in ionic conductors.

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