Porous cluster of silver powder whose activity is enhanced by zirconium oxide that can be used as a catalyst in a gas diffusion electrode, and a method for producing the same

摘要

An air electrode comprising a catalyst comprising a plurality of porous clusters of silver particles, each cluster including a plurality of primary particles of silver and crystalline particles of zirconium oxide (ZrO 2 ), wherein at least a portion of said crystalline particles of ZrO 2 is located in pores formed by a surface of said plurality of primary particles; a water-repellant polymer; a silver-coated current collector; and a porous hydrophobic film, wherein said catalyst, said water-repellent polymer and said current collector are located on a single broad face of said porous hydrophobic film.