METHOD FOR PRODUCING LITHIUM SECONDARY BATTERY THICK FILM AND METHOD FOR PRODUCING LITHIUM SECONDARY BATTERY BY USING ELECTROSTATIC SLURRY SPRAYING OF SLURRY CONTAINING SULFIDE-BASED SOLID ELECTROLYTE
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United States of America Patent
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Sep 9, 2021
app pub date -
Jul 19, 2017
filing date -
Jul 19, 2016
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Provided are a method for producing a lithium secondary battery thick film and a method for producing a lithium secondary battery, by using electrostatic slurry spraying of slurry containing a sulfide-based solid electrolyte. Particularly, the method for producing a lithium secondary battery thick film comprises: a step of preparing slurry in which the powder of a sulfide-based solid electrolyte is mixed with at least one solvent selected between a dichloroethane and a dichlorobenzene, at the weight ratio of 1:10 to 1:100; and a step of depositing a lithium secondary battery thick film by electrostatically spraying the slurry on a current collector under a nitrogen atmosphere in the cone-jet mode.
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