METHOD FOR PRODUCING LITHIUM DIFLUOROPHOSPHATE CRYSTAL IN HIGH PURITY AND NON-AQUEOUS ELECTROLYTE FOR SECONDARY BATTERY USING SAME

The present invention relates to a method for producing a lithium difluorophosphate crystal, and more specifically, to an invention which is capable of providing a method for producing a lithium difluorophosphate crystal in high yield and high purity, and in which the resulting high-purity lithium difluorophosphate crystal can be applied to various uses.