| 摘要 |
PROBLEM TO BE SOLVED: To prevent the dispersion of the density of an electrode material comprising a positive active material or a negative material of a thin electrode assembled in a lithium ion secondary battery or the like, make the active material dense and uniform, make the surface of the thin electrode smooth, increase the filling amount of the active material in a constant volume battery case, and easily maintain the dimensional accuracy of a roll faclitate the maintenarce of the surface control, and accuracy control in the installation of the roll. SOLUTION: A press roll 1 for manufacturing a thin electrode has a roll core 2 and an elastic cover layer 3 made of an elastic material arranged on the outside of the roll core 2. The thin electrode is manufactured in such a way that a pasty mix containing a positive active material or a negative active material is applied to the surface of a metal foil for an electrode, the mix coated metal foil is inserted between the elastic press roll 1 and elastic roll, similar to the elastic press roll 1, metal roll, or ceramic roll, and pressed. |
