Journal article

Publication year: 2020

Pages: 146-14+

Journal: ACS Energy Letters

Volume number: 5

Issue number: 1

ISSN: 2380-8195

Open access status: Green

DOI Link: https://doi.org/10.1021/acsenergylett.9b02537

Publisher: American Chemical Society

Abstract: 
The sodium-ion conducting family of Na(3)PnS(4), with Pn = P, Sb, has gained interest for the use in solid-state batteries due to their high ionic conductivity. However, significant improvements to the conductivity have been hampered by the lack of aliovalent dopants that can introduce vacancies into the structure. Inspired by the need for vacancy introduction into Na(3)PnS(4), the solid solutions with WS42- introduction are explored. The influence of the substitution with WS42- for PS43- and SbS43- is monitored using a combination of X-ray diffraction, Raman, and impedance spectroscopy. With increasing vacancy concentration, improvements resulting in a very high ionic conductivity of 13 +/- 3 mS.cm(-1) for Na2.9P0.9W0.1S4 and 41 +/- 8 mS.cm(-1) for Na2.9Sb0.9W0.1S4 can be observed. This work acts as a stepping-stone toward further engineering of ionic conductors using vacancy injection via aliovalent substituents.

Harvard Citation style: Fuchs, T., Culver, S., Till, P. and Zeier, W. (2020) Defect-Mediated Conductivity Enhancements in Na_3-xPn_1-xW_xS₄ (Pn = P, Sb) Using Aliovalent Substitutions, ACS Energy Letters, 5(1), pp. 146-14+. https://doi.org/10.1021/acsenergylett.9b02537

APA Citation style: Fuchs, T., Culver, S., Till, P., & Zeier, W. (2020). Defect-Mediated Conductivity Enhancements in Na_3-xPn_1-xW_xS₄ (Pn = P, Sb) Using Aliovalent Substitutions. ACS Energy Letters. 5(1), 146-14+. https://doi.org/10.1021/acsenergylett.9b02537