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

Yannick Eatmon, Joseph W. Stiles, Shuichiro Hayashi, Marco Rupp, Craig Arnold

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


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 P (Formula presented.) S (Formula presented.) (Formula presented.) degradation. This work demonstrates the ability of laser-based processing to be used to improve the stability of SSEs.

Original languageEnglish (US)
Article number2210
Issue number15
StatePublished - Aug 2023

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering
  • General Materials Science


  • energy devices
  • laser-based processing
  • solid-state electrolyte


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