| 摘要 |
PROBLEM TO BE SOLVED: To prevent flames generated by the abnormal heat during the excessive charge or under high temperature by consisting at least one current collector of a positive electrode and a negative electrode of a low-melting point layer formed of the resin to be melted during the abnormal heat and a metal layer, which is interposed between the low-melting point layer and the active substance and exchanging of charges. SOLUTION: In positive and negative electrodes where an active substance layer 1 is adhered to a current collector 2 via a binder, at least one current collector 2 comprises a resin film 3 to be melted in the abnormal heat, and a metal layer 4 which is interposed between the resin film 3 and the active substance layer 1, and exchanges the charges. In the active substance layer 1, the positive electrode is formed of LiCoO, etc., the negative electrode is formed of amorphous carbon, etc., and the binder is formed of polyvinylidene fluoride, etc., polyolefine, etc., of about 130-170 deg.C in melting point is used for the resin film, an aluminum vapor deposition layer is formed on the positive electrode and a copper vapor deposition layer is formed on the negative electrode in the metal layer 4, and the thickness is preferably 0.5-3 μm. |
