The role of nanoporous carbon materials for thiophosphate-based all solid state lithium sulfur battery performance

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Magdalena Fiedler - , Chair of Inorganic Chemistry I, Fraunhofer Institute for Material and Beam Technology (Author)
  • Martin A. Lange - , University of Münster (Author)
  • Felix Hippauf - , Fraunhofer Institute for Material and Beam Technology (Author)
  • Susanne Dörfler - , Fraunhofer Institute for Material and Beam Technology (Author)
  • Holger Althues - , Fraunhofer Institute for Material and Beam Technology (Author)
  • Wolfgang G. Zeier - , University of Münster, Jülich Research Centre (Author)
  • Stefan Kaskel - , Chair of Inorganic Chemistry I, Fraunhofer Institute for Material and Beam Technology (Author)

Abstract

Due to their high theoretical energy density, all solid state lithium sulfur batteries (LS-SSB) represent one of the most promising candidates for next-generation energy storage systems. Whilst high sulfur utilizations have been published for several cathode compositions and preparation methods in recent years, there is still a lack of clarity regarding the influence of the used carbon. Furthermore, LS-SSBs face challenges in up-scaling as the common preparation methods including high energy ball milling are time consuming, batch-wise and need high energy impact. In this study, high sulfur utilization >1600 mAh gS−1 and reversibility with 80 % of initial discharge capacity after 60 cycles is achieved, using a more time-efficient preparation method with drastically lowered energy impact by selecting a suitable carbon. Additionally, the influence of the carbon nanostructure on the electrochemical performance is discussed. This study provides guidance in selecting nanostructured carbon materials to enable cost-efficient, up-scalable preparation methods for LS-SSBs without compromising on the excellent electrochemical performance.

Details

Original languageEnglish
Article number119252
JournalCarbon
Volume227
Publication statusPublished - 30 Jun 2024
Peer-reviewedYes

Keywords

Keywords

  • All-solid-state battery, Ball milling, Carbon, Lithium-sulfur battery, Thiophosphate electrolyte