Oxynergy Ltd.

Oxenergy Ltd.

Omri Feingold

Joel Lang

Avi Melman

Irena Kobrin

Irina Kobrin

Aviel Danino

Ori Tzidon

Elad Shina

Yisrael Miler

The invention relates to a metal-air electrochemical cell comprising a frame () defining an electrolyte chamber having an anode side and a cathode side, wherein an air cathode assembly is provided in the cathode side, said air cathode assembly () comprising hydrophobic porous film having a first face and a second face, with current collector () and catalyst-containing active layer () provided on said first face, with the planar dimensions of the catalyst-containing active layer on said first face being smaller than that of said hydrophobic film and said current collector, such that the catalyst-containing active layer does not reach the edges of said hydrophobic film and said current collector, thereby creating a catalyst-free margin () on the hydrophobic film () and current collector which surrounds the catalyst-containing active layer, and wherein said first face of the hydrophobic film and said frame of the cell arm joined together by thermoplastic () applied onto the catalyst-free margin of the hydrophobic film. A method of assembling the metal/air cell is also described.

Electrode assembly and method for its preparation

The invention provides electrodes suitable for use as air electrodes, processes for their preparation and metal/air cells utilizing such electrodes as air cathodes. The invention relates to an electrode comprising a catalytically active layer applied on one face of a hydrophobic porous film and a conductive current collector pressed onto said catalytically active face, wherein at least a portion of the marginal area of said face is free from catalyst, and wherein a sealant is provided around at least part of the perimeter of said catalytically active layer, said sealant forming a coating onto the catalyst-free marginal area of said hydrophobic film.

Growing community of inventors

Gedera, Israel

Omri Feingold