| 摘要 |
PROBLEM TO BE SOLVED: To make it stable to nonaqueous electrolyte, and improve adhesive strength to a current collecting base body by containing a hydrofluoric acid by a specific quantity to weight of a vinylidene fluoride polymer dissolved in an organic solvent, and also adding an acid except for the hydrofluoric acid. SOLUTION: A vinylidene fluoride polymer is dissolved in an organic solvent, and a nonaqueous battery forming binder solution is adjusted. A hydrofluoric acid of 400 to 20000ppm is contained to weight of a vinylidene fluoride polymer in this binder solution. An acid except for the hydrofluoric acid is also added. The formation of the hydrofluoric acid is promoted by heating a vinylidene fluoride solution or addition of alkali. An organic acid is used as the acid except for the hydrofluoric acid. Electrode mix slurry for a nonaqueous battery is obtained by dispersing a powdery electrode material in this vinylidene fluoride polymer binder solution. This slurry is applied on a current collecting base body, and is dried, and is formed as an electrode structure body having an electrode mix layer. |
