%0 Journal Article
%A Heuer, Philip
%A Ketter, Lukas
%A Rana, Moumita
%A Scharf, Felix
%A Brunklaus, Gunther
%A Zeier, Wolfgang
%T Attaining a fast-conducting, hybrid solid state separator for all solid-state batteries through a facile wet infiltration method
%J Energy advances
%V 4
%@ 2753-1457
%C Beijing
%I Royal Society of Chemistry
%M FZJ-2025-04075
%P 1356-1362
%D 2025
%X Thin, fast-conducting and mechanically robust separators are expected to be advantageous in enabling all-solid-state batteries with high energy densities and good electrochemical performance. In this study, a potentially new scalable fabrication route for flexible thiophosphate–polymer separator membranes is demonstrated. By infiltrating a commercially available polymer mesh with the highly conductive inorganic solid ion conductor $Li_{5.5}PS_{4.5}Cl_{1.5}$, a hybrid separator membrane with a high ionic conductivity is realized. The electrochemical evaluation via rate capability tests reveals superior performance at low stack pressures and high C-rates, when comparing cells employing the hybrid membrane separator, to cells utilizing conventional solid electrolyte separators. As a proof of concept, a full cell implementing the hybrid membrane between a Si-based anode and a $LiNi_{0.83}Co_{0.11}Mn_{0.06}O_2–Li_{5.5}PS_{4.5}Cl_{1.5}$ composite cathode is evaluated. The experimental work is complemented by resistor network modelling of the hybrid membrane sheets, shedding light on potential challenges in cell operation.
%F PUB:(DE-HGF)16
%9 Journal Article
%R 10.1039/D5YA00141B
%U https://juser.fz-juelich.de/record/1047019