| 摘要 |
PROBLEM TO BE SOLVED: To provide a secondary battery capable of suppressing and preventing clogging of an electrolyte component at a separator even when electrodes and the separator are integrally configured.SOLUTION: A secondary battery comprises: positive electrodes including positive electrode active material layers; negative electrodes including negative electrode active material layers; electrolyte layers each of which includes a separator disposed between the positive electrode and the negative electrode; and bonding layers each of which is disposed at least at one of places between the positive electrode and the separator and between the negative electrode and the separator, and bonds at least one of the positive electrode and the negative electrode to the separator. A ratio of air permeability of the separator after being integrated with the positive electrode or the negative electrode via the bonding layer to that of the separator before the integration is 160% or less. Bonding strength of the separator and the positive electrode or the negative electrode via the bonding layer is 0.1 to 2.0 N/mm. |
