| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a battery, which prevents a short circuit occurring on the outer surface of a metal battery case, enhances the heat releasability of the surface of the battery case to facilitate the cooling of the battery, and which has a superior charge/discharge cycle characteristic. SOLUTION: The outer surface of the metal battery case is coated with a film containing inorganic oxide, where the contact angle between the inorganic oxide and water is made smaller than 50 degree. Thus, the surface of the metal case can be insulated well, and can also be cooled effectively due to the fact that an inorganic compound in contact with water at an angle of smaller than 50 degree can attract the water to its surface.</p> |
