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Air Stabilization of Li7P3S11 Solid-State Electrolytes through Laser-Based Processing.

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. Li7P3S11 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 Li7P3S11 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.

SUBMITTER: Eatmon Y 

PROVIDER: S-EPMC10421269 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature

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Air Stabilization of Li<sub>7</sub>P<sub>3</sub>S<sub>11</sub> Solid-State Electrolytes through Laser-Based Processing.

Eatmon Yannick Y   Stiles Joseph W JW   Hayashi Shuichiro S   Rupp Marco M   Arnold Craig C  

Nanomaterials (Basel, Switzerland) 20230729 15

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<sub>7</sub>P<sub>3</sub>S<sub>11</sub> 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 t  ...[more]

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