RETICULATED SOLID ELECTROLYTE SEPARATOR

• Main Authors: AMIN-SANAYEI RAMIN, BREZUN JEREMIE, AUBART MARK, COLLETTE CHRISTIAN
• Format: Patent
• Language: Chinese; English
• Published: 01.02.2022
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMISTRY; COMPOUNDS THEREOF; EXPLOSIVES; EXPLOSIVES OR THERMIC COMPOSITIONS; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; INORGANIC CHEMISTRY; LIQUEFIED PETROLEUM GAS; LUBRICANTS; MANUFACTURE THEREOF; MATCHES; METALLURGY; NATURAL GAS; NON-METALLIC ELEMENTS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; USE OF SINGLE SUBSTANCES AS EXPLOSIVES

This invention discloses a method of fabricating a reticulated solid electrolyte / separator (RSES) which is suitable both as electrolyte and separator in a solid state battery. The reticulated composite is produced by casting and drying of a slurry which exhibits a high yield stress (greater than 50 dyne/cm2) and comprised of a high MW resin dissolved in a solvent (having solution viscosity of higher than 100cp at 5% in NMP at room temperature) and dispersed nanoparticles of solid electrolyte of high specific surface areas (i.e. greater than 1 m2/g, preferable greater than 10 m2/g) including but not limited to LLZO, LSP, or LIPON or derivatives thereof. This reticulated solid electrolyte / separator exhibits superior cycling properties and high ionic conductivity, resists lithium dendrite penetration, and maintains a high dimensional stability (less than 10% shrinking) at elevated temperatures (up to 140 DEG C). In addition, the present disclosure relates to electrochemical cells comprising such a reticulate