Article Dans Une Revue ACS Applied Materials & Interfaces Année : 2024

Spray-Printed Flexible Li2S Cathode with Inorganic Ion-Conductive Binder Nano-Li3PS4

Résumé

Flexible solid-state batteries fabricated by printing techniques are promising integrated power supplies for miniaturized and customized electronic devices. While typically these batteries use polymer solid electrolytes, a flexible Li2S cathode with sulfide solid electrolyte is spray-printed in this work, by using solvated Li3PS4 nanoparticles as inorganic ion-conductive binder. This benefits from a novel low-temperature-sintering property of these nanoparticles, which can be pressure-free densified, along with the desolvation process, and thus bind the cathode at 250 °C. The battery can be stably charged and discharged for 300 cycles with no stacking pressure, and the capacity maintains at 840 mA h gLi2 S–1. We believe this low-temperature-sintering phenomenon of solid electrolyte nanoparticles will open a new path toward the application of sulfide solid electrolytes in printed solid-state batteries.

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hal-04462813 , version 1 (30-08-2024)

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Bo Fan, Yuexin Fang, Bai Xue, Qixing Wu, Zhongkuan Luo, et al.. Spray-Printed Flexible Li2S Cathode with Inorganic Ion-Conductive Binder Nano-Li3PS4. ACS Applied Materials & Interfaces, 2024, Acs Applied Materials and Interfaces, 16 (6), pp.7182-7188. ⟨10.1021/acsami.3c16731⟩. ⟨hal-04462813⟩
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