Ramot University Authority for Applied Research and Industrial Development Limited

Tel Aviv University

Oxenergy Ltd.

Tel-aviv Univrsity Future Technology Development L.p.

Avi Melman

Emanuel Peled

Tair Duvdevani

Adi Aharon

Joel Lang

Chen Menachem

Omri Feingold

Dany Bar-Tov

Yitzhak Lavi

Aviel Danino

Elad Shina

Yisrael Miler

Irena Kobrin

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 present invention provides improved, low-cost fuel cells having reduced fuel crossover, reduced sensitivity to metal ion impurities and ability to operate under a broad range of temperatures. The invention further provides improved methods for catalyst preparation and a new integrated flow field system for use in H/Ofuel cells.

Fuel cell having fuel tank directly attached to anode allowing pump-free fuel delivery

Direct oxidation fuel cell with a divided fuel tank having a movable barrier pressurized by anode effluent gas

The present invention provides an ion conducting matrix comprising: (i) 5 to 60% by volume of an inorganic powder having a good aqueous electrolyte absorption capacity; (ii) 5 to 50% by volume of a polymeric binder that is chemically compatible with an aqueous electrolyte; and (iii) 10 to 90% by volume of an aqueous electrolyte, wherein the inorganic powder comprises essentially sub-micron particles. The present invention further provides a membrane being a film made of the matrix of the invention and a composite electrode comprising 10 to 70% by volume of the matrix of the invention.

Ion conductive matrixes and their use

The present invention provides improved, low-cost fuel cells having reduced fuel crossover, reduced sensitivity to metal ion impurities and ability to operate under a broad range of temperatures. Additionally, new effective organic fuels are described for use in such fuel cells. The invention further provides improved methods for catalyst preparation and a new integrated flow field system for use in H /O fuel cells.

Fuel cell with proton conducting membrane

The present invention provides improved, low-cost fuel cells having reduced fuel crossover, reduced sensitivity to metal ion impurities and ability to operate under a broad range of temperatures. Additionally, new effective organic fuels are described for use in such fuel cells. The invention further provides improved methods for catalyst preparation and a new integrated flow field system for use in H /O fuel cells. The fuel cell includes a proton conducting membrane having pore diameters which are essentially smaller than 30 nanometers.

Fuel cell with proton conducting membrane with a pore size less than 30 nm

A non-aqueous electrochemical cell comprising a cathode, non-aprotic or polymeric electrolyte and an anode of carbon-based bonded particles coated with a thin (less than 1 micron thick) solid electrolyte interphase which is a M conductor and electronic insulator consisting of alkali metal or alkaline earth salts, oxides or sulfides, said cell being assembled in the non-charged state.

Lithium anode with solid electrolyte interface

Growing community of inventors

Holon, Israel

Avi Melman