학술논문
Air Stabilization of Li 7 P 3 S 11 Solid-State Electrolytes through Laser-Based Processing.
Document Type
Academic Journal
Author
Eatmon Y; Department of Chemical and Biological Engineering, Princeton Univeristy, Princeton, NJ 08544, USA.; Stiles JW; Department of Chemistry, Princeton University, Princeton, NJ 08544, USA.; Hayashi S; School of Integrated Design Engineering, Keio University, Yokohama 223-8522, Kanagawa, Japan.; Rupp M; Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA.; Arnold C; Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA.; Princeton Materials Institute, Princeton University, Princeton, NJ 08544, USA.
Source
Publisher: MDPI AG Country of Publication: Switzerland NLM ID: 101610216 Publication Model: Electronic Cited Medium: Print ISSN: 2079-4991 (Print) Linking ISSN: 20794991 NLM ISO Abbreviation: Nanomaterials (Basel)
Subject
Language
English
ISSN
2079-4991
Abstract
All-solid-state batteries (ASSBs) that employ solid-state electrolytes (SSEs) have the potential to replace more conventional batteries that employ liquid electrolytes due to their inherent safety, compatibility with lithium metal and reputable ionic conductivity. Li 7 P 3 S 11 is a promising SSE with reported ionic conductivities in the order of 10 mS/cm. However, its susceptibility to degradation through oxidation and hydrolysis limits its commercial viability. In this work, we demonstrate a laser-based processing method for SSEs to improve humidity stability. It was determined that laser power and scanning speed greatly affect surface morphology, as well as the resulting chemical composition of Li 7 P 3 S 11 samples. Electrochemical impedance spectroscopy revealed that laser treatment can produce SSEs with higher ionic conductivities than pristine counterparts after air exposure. Further examination of chemical composition revealed an optimal laser processing condition that reduces the rate of P2S74- degradation. This work demonstrates the ability of laser-based processing to be used to improve the stability of SSEs.