| 摘要 |
PROBLEM TO BE SOLVED: To make characteristics uniform over the whole surface of the coated part of a negative electrode sheet by stacking a conductive body on the surface side of the outermost negative electrode of a battery electrode body. SOLUTION: A current collector 1 is made of a metal foil such as a copper foil. An electrode mix 2 is prepared by kneading an active material such as milled carbon fibers together with a binder, a conductive material, and a solvent to disperse them to form negative electrode past, then the negative electrode past is applied to the both surfaces of the current collector 1 in a coating process, dried, then rolled to obtain a negative electrode sheet, and the negative electrode sheet is slit in the specified width. A conductive body 3 is the same material as the current collector 1, that is a metal foil such as a copper foil for example, and connected to the uncoated part at the end in the width direction of the current collector 1 in a process such as welding. |
