Gas diffusing electrode body, method of manufacturing the same and electrochemical device

A method of manufacturing a gas diffusing electrode body, the method comprising:

• forming an alternating layer including a first layer and a second layer,
• the first layer including
• an electro-conductive carbon powder or granule thereof, and
• an electro-conductive carbon powder or granule thereof having a water-repellant film coat, and
• the second layer consisting essentially of one or more catalyst metals;
• and
• forming a multilayered structure including at least two of said alternating layers, wherein the alternating layers are laid sequentially,
• wherein the first layer further includes an electro-conductive carbon powder or granule thereof having an ion conducting film.

A method of manufacturing a gas diffusing electrode body, the method comprising:

• forming an alternating layer including a first layer and a second layer,
• the first layer including
• an electro-conductive carbon powder or granule thereof, and
• an electro-conductive carbon powder or granule thereof having a water-repellant film coat, and
• the second layer consisting essentially of one or more catalyst metals;
• and
• forming a multilayered structure including at least two of said alternating layers, wherein the alternating layers are laid sequentially, wherein the electro-conductive carbon powder of granule thereof having the catalyst metal is made by depositing a catalyst metal on the electro-conductive carbon powder or granule thereof and with vibrating the electro-conductive carbon powder or granule thereof, wherein the first layer further includes an electro-conductive carbon powder or granule thereof having a catalyst metal.