oxide/polymer hybrid solid electrolyte membrane fabrication using composite ceramic material and all-solid-state lithium secondary batteries using the same

Oxide/polymer hybrid solid electrolyte membrane fabrication using composite ceramic material and all-solid-state lithium secondary batteries

This technology is about the production of oxide/polymer hybrid solid electrolyte membranes using composite ceramic materials and all-solid-state lithium secondary batteries.

LLZO used in all-solid-state batteries has the problem of reacting with moisture and carbon dioxide at room temperature to generate Li2CO3 on the surface, resulting in Li loss and reduced ionic conductivity. To solve these problems, this technology proposes a hybrid electrolyte of a ceramic composite composition for secondary batteries using LALZO (Li6.28Al0.24La3Zr2O12) and h-BN (Hexagonal Boron Nitride) as active ingredients.

This technology significantly solves the problems of lithium loss, reduced ionic conductivity, and reduced interfacial stability, improving electrochemical properties, and lithium ions applied with existing organic liquid electrolytes. It is expected that it can replace batteries (LIBs).

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Key Features:

• Contains LALZO (Li6.28Al0.24La3Zr2O12) and h-BN (Hexagonal Boron Nitride) as active ingredients
• VDF-HFP (poly(vinylidene fluoride-co-hexafluoropropylene)) and LiTFSI (lithium bis(trifluoromethanesulfonyl)imide) in a 2:1 weight ratio Mix
• Add 10% by weight of LALZO/h-BN to PVDF-HFP
• Synthesize by annealing at 400°C for 5 hours in a nitrogen atmosphere

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This technology was developed through support from the National Research Foundation of Korea's research project on functional interface structures for lithium cathode-based high-capacity energy storage.

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