METHOD FOR PREPARING DIFLUOROPHOSPHATE SALT

• Main Authors: JUNG KWANG JU, LEE SEOK JONG, CHOI MIN SIK, PARK HEE GEUN, HA JONG WOOK, SONG BYEONG HAK, SEO HYUNG JIN
• Format: Patent
• Language: English; Korean
• Published: 26.09.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS THEREOF; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

One embodiment of the present invention provides a method for producing difluorophosphate, which includes the steps of: generating dichlorophosphate by adding an alkali metal salt that is phosphate, borate, oxide, or hydroxide of an alkali metal, a phosphorus compound, and a non-aqueous solvent to a reactor; producing a reaction product by adding an ammonium-containing fluorinating agent to the dichlorophosphate; and removing impurities from a reaction product and obtaining difluorophosphate. 본 발명의 일실시예는 반응기에 알칼리 금속의 인산염, 탄산염, 할로겐염, 붕산염, 산화물 또는 수산화물인 알칼리 금속염, 인 화합물 및 비수용매를 투입하여 디클로로인산염을 생성시키는 단계; 상기 디클로로인산염에 암모늄 함유 불소화제를 투입하여 반응생성물을 제조하는 단계; 및 상기 반응생성물로부터 불순물을 제거하고 디플루오로인산염을 수득하는 단계;를 포함하는 디플루오로인산염의 제조방법을 제공한다.