| 摘要 |
A button cell having an air cathode characterized by having a cathode can 21 with air access port 16 in an essentially flat bottom 23. Air cathode 29 is positioned with its hydrophobic portion 28 abutting flat bottom 23 and grooves 25 or 25a are provided in the central portion of the interior of bottom 23 of cathode can 21 or in abutting hydrophobic portion 28 of air cathode 29 respectively. |
