| 摘要 |
A metal air electric cell uses cobalt phthalocyanine as a catalyst in its cathode assembly to promote electrochemical reduction of the positive active material, oxygen, and obtains increased output with extended service life. A button cell (10) comprises a cathode cup (11) secured to an anode cup (12) with an insulating seal (14) in between. The anode cup (12) contains a metallic material (13) mixed with electrolyte and this is separated from a cathode assembly (15) by a separator (33) which prevents electronic conductance but does not inhibit ionic transport. The cathode assembly (15) includes cathode material (32) incorporating cobalt phthalocyanine catalyst and encompassing a current collector grid (31) electrically connected to the cathode cup (11). A permeable hydrophobic member (30) is provided between the cathode assembly (15) so that gas entering and leaving the cell via openings (20,21) in the cathode cup (11) must pass through the hydrophobic member (30), and a diffuser (16) provides for even distribution of gas entering the openings (20,21) to the cathode assembly (15). <IMAGE> |
