TY  - JOUR
AU  - Heuer, Philip
AU  - Ketter, Lukas
AU  - Rana, Moumita
AU  - Scharf, Felix
AU  - Brunklaus, Gunther
AU  - Zeier, Wolfgang
TI  - Attaining a fast-conducting, hybrid solid state separator for all solid-state batteries through a facile wet infiltration method
JO  - Energy advances
VL  - 4
SN  - 2753-1457
CY  - Beijing
PB  - Royal Society of Chemistry
M1  - FZJ-2025-04075
SP  - 1356-1362
PY  - 2025
AB  - 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.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1039/D5YA00141B
UR  - https://juser.fz-juelich.de/record/1047019
ER  -