An object of the invention is to provide a tetrafluoroborate producing method that allows high-yield, high-efficiency production of a tetrafluoroborate by a continuous process, a tetrafluoroborate-containing electrolyte, and an electrical storage device in...

To provide a technique for simply and easily producing a high-purity difluorophosphate and provide a production process of an electrolytic solution using the obtained difluorophosphate, an electrolytic solution and a secondary battery. A process for produc...

To provide a technique for simply and easily producing a high-purity difluorophosphate and provide a production process of an electrolytic solution using the obtained difluorophosphate, an electrolytic solution and a secondary battery. A process for produc...

An object of the present invention is to provide a method of manufacturing phosphorus pentafluoride and hexafluorophosphate, that can suppress the manufacturing cost and also can manufacture high-quality phosphorus pentafluoride from an inexpensive and low...

An object is to provide a method of manufacturing a hexafluorophosphate, that can simply and easily manufacture an inexpensive and high-quality hexafluorophosphate while suppressing the manufacturing cost, an electrolytic solution containing a hexafluoroph...

A simple short-time method for modifying a fluorine resin film so that hydrophilicity is not likely to deteriorate over time. The method for modifying a fluorine resin film is characterized in that the surface of the fluorine resin film is provided with hy...