BATTERY SEPARATORS COMPRISING HYBRID SOLID STATE ELECTROLYTE COATINGS
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United States of America
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Issued Date -
Jan 20, 2022
app pub date -
Jul 14, 2020
filing date -
Jul 14, 2020
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Abstract
A separator includes a porous polymeric separator having an anode side and a cathode side, a cathode-compatible material applied to the cathode side, wherein the cathode-compatible material comprises a polymeric binder and one or more of lithium aluminum titanium phosphate (LATP) particles, lithium lanthanum titanate (LLTO) particles, lithium aluminum germanium phosphate (LAGP) particles, and lithium superionic conductor (LISICON) particles, and an anode-compatible material applied to the anode side, wherein the anode-compatible material comprises lithium lanthanum zirconium oxide (LLZO) particles and a polymeric binder. The polymeric binder of the cathode-compatible material can be polyvinylidene fluoride and the polymeric binder of the anode-compatible material can be polyvinylidene. The polymeric binder of the cathode-compatible material the anode-compatible material can be the polymeric separator. The LLZO particles and the one or more of LATP, LLTO, LAGP, and LISICON particles can have an average particle size of 10 nm to 10 μm.
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