Mitigating Chemo-Mechanical Failure in Li-S Solid State Batteries with Compliant Cathodes

Yuxun Ren, Nicholas Hortance, Kelsey B. Hatzell

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Solid-state sulfur cathodes based on inorganic sulfide solid electrolytes can enable energy-dense lithium batteries. However, volume changes and chemical decomposition can drive delamination and degradation during cycling. To overcome these challenges, this paper reports an in situ approach to encapsulate the solid-state sulfur cathode with a gel polymer electrolyte (GPE). The GPE is covalently bonded with the sulfide solid electrolyte and acts as a barrier that suppresses chemical decomposition between the sulfide solid electrolyte and cathode active material. The elastic GPE maintains interfacial contact within the sulfur cathode allowing for greater sulfur utilization. The solid-state sulfur cathode with GPE demonstrates capacities nearing 700 mAh g−1 and capacity retention over 100 cycles.

Original languageEnglish (US)
Article number060503
JournalJournal of the Electrochemical Society
Issue number6
StatePublished - Jun 2022

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Renewable Energy, Sustainability and the Environment


  • chemo-mechanics
  • lithium metal
  • solid state battery


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