公开(公告)号：EP3995446A1

公开(公告)日：2022-05-11

申请号：EP20850424.1

申请日：2020-08-06

申请人： Central Glass Co., Ltd.

发明人： TAKAHASHI Mikihiro ,  SHINMEN Masutaka ,  MORINAKA Takayoshi ,  FUJIMOTO Masataka ,  IWASAKI Susumu ,  NAKAHARA Keita ,  MIURA Masahiro ,  MIMURA Shunsuke ,  KUBO Katsuya

IPC分类号： C01B25/455 ,  H01M10/052 ,  H01M10/0567 ,  C07F9/08

摘要： According to the present disclosure, there is provided a method for producing a lithium difluorophosphate in which a difluorophosphate ester reacts with a lithium salt compound in a nonaqueous organic solvent without using water as a raw material in the reaction, a method for producing a difluoro phosphate ester which includes a step of allowing a dihalophosphate ester to react with a fluorinating agent having a concentration of contained hydrogen fluoride of 15 mol% or less in a nonaqueous organic solvent; lithium difluorophosphate in which a value of a relational expression (d90 - d10)/MV represented by d90 which is a particle size at which a volume cumulative distribution is 90%, d10 which is a particle size at which a volume cumulative distribution is 10%, and MV which is a volume average particle size is 10 or less; and a method for producing a nonaqueous electrolytic solution and a method for producing a nonaqueous secondary battery using the production method described above.