| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas-diffusion electrode which is high in performance, exibits no degradation of the performance, is high in mechanical strengths and has layers, each being hard to peel, because hot pressing is available at high temp. at the time of manufacture. SOLUTION: In the gas-diffusion electrode 1 consisting of a reacting layer 2 and a gas supplying layer 3, hydrophobic carbon blacks having average particle sizes of <=80 nm scatter in a portion of a space in which metallic particles having average particle sizes of <=600 nm gather. The gas-diffusion electrode 1 is constituted of a reacting layer 2 incorporating 20 to 45% polytetrafluoroethylene(PTFE) particulates by volume having an average particle size of <=300 nm and a gas supplying layer 3 in which 30 to 45% PTFE particulates by volume having average particle sizes of <=300 nm are incorporated in the hydrophobic carbon blacks having average particle sizes of <=80 nm. |
