Instantaneous preparation of high lithium-ion conducting sulfide solid electrolyte Li7P3S11 by a liquid phase process. Issue 73 (2nd October 2017)

• Record Type: Journal Article
• Authors: Calpa, Marcela; Rosero-Navarro, Nataly Carolina; Miura, Akira; Tadanaga, Kiyoharu
• Is Part Of: RSC advances. Volume 7:Issue 73(2017)
• Page Start: 46499
• Page End: 46504
• Publication Date: 2017-10-02
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra09081a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A solid electrolyte with a small particle size, good mechanical properties and high ionic conductivity is required to achieve high energy and power density in the all-solid-state battery. Abstract : A solid electrolyte with a small particle size, good mechanical properties and high ionic conductivity is required to achieve high energy and power density in the all-solid-state battery. Here, we report an instantaneous preparation of high lithium-ion conducting sulfide solid electrolyte Li7 P3 S11 by a simple procedure involving a liquid phase process under ultrasonic irradiation and low thermal treatment at 220 °C. A short reaction time of 30 min was enough to produce the formation of PS4 3− units. Subsequent drying and heating processes led to the precipitation of the Li7 P3 S11 phase with a particle size below 500 nm, achieving high ionic conductivity of 1.0 × 10 −3 S cm −1 at 22 °C and a low activation energy of 12.8 kJ mol −1 .