MUMBAI, India, Aug. 17 -- Intellectual Property India has published a patent application (202627069681 A) filed by Carl Freudenberg Kg on June 03, 2026, for Gas Diffusion Layer For Polymer-Electrolyte Membrane Fuel Cells With Reduced Contact Resistance.
Inventors include Bock, Achim; Klein, Kristof; Rakousky, Christoph; Barsch, Hannes; Von Spee, Amlie; and Lble, Matthias.
The application for the patent was published on August 14, 2026, under issue no. 33/2026.
Abstract: The invention relates to a gas diffusion layer for a fuel cell, comprising A) a flat electrically conductive material which contains at least one fiber material, said fiber material being selected from carbon fiber nonwoven materials, carbon fiber papers, carbon fiber woven fabrics, and mixtures thereof, and B) a microporous layer containing conductive carbon particles in a matrix consisting of a polymeric binder, wherein the conductive carbon particles comprise soot and graphite, and the proportion of graphite, based on the total weight of soot and graphite contained in the microporous layer, equals at least 50 wt.%, said microporous layer being applied onto at least one face of the flat electrically conductive material A). The invention additionally relates to a method for producing the gas diffusion layer, to a fuel cell containing the gas diffusion layer, and to the use of the gas diffusion layer in a polymer-electrolyte membrane fuel cell in order to reduce the contact resistance at the boundary surface between the microporous layer of the gas diffusion layer and the catalyst layer applied onto the polymer-electrolyte membrane.
Disclaimer: Curated by HT Syndication.
