Patents by Inventor Christian Eickes

Christian Eickes has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240052504
    Abstract: The present invention relates to a coated membrane containing: a membrane with a front and a rear face, a catalyst-containing coating which is provided on the front face of the membrane, the catalyst containing a support material which has a BET surface area of maximally 80 m2/g, an iridium-containing coating which is provided on the support material and contains an iridium oxide, an iridium hydroxide or an iridium hydroxide oxide or a mixture of at least two of these iridium compounds, wherein the catalyst contains iridium in a quantity of maximally 60 wt. %, and the coating provided on the membrane front face has an iridium content of maximally 0.4 mg iridium/cm2.
    Type: Application
    Filed: December 22, 2021
    Publication date: February 15, 2024
    Applicants: Greenerity GmbH, Heraeus Deutschland GmbH & Co. KG, Technische Universität München
    Inventors: Christian GEBAUER, Martina KEMMER, Hubert GASTEIGER, Maximilian BERNT, Alexandra HARTIG-WEISS, Jan BYRKNES, Christian EICKES, Alessandro GHIELMI
  • Publication number: 20240044027
    Abstract: The invention relates to a particulate catalyst, containing: —a support material, —an iridium-containing coating which is provided on the support material and which contains iridium oxide, an iridium hydroxide, or an iridium hydroxide oxide, wherein the support material has a BET surface area ranging from 2 m2/g to 50 m2/g, and the iridium content of the catalyst satisfies the following condition: (1.505 (g/m2)×BET)/(1+0.0176 (g/m2)×BET)?Ir-G?(4.012 (g/m2)×BET)/(1+0.0468 (g/m2)×BET), where BET is the BET surface area of the support material, in m2/g, and Ir-G is the iridium content, in wt. %, of the catalyst.
    Type: Application
    Filed: December 22, 2021
    Publication date: February 8, 2024
    Inventors: Christian GEBAUER, Martina KEMMER, Hubert GASTEIGER, Maximilian BERNT, Alexandra HARTIG-WEIß, Jan BYRKNES, Christian EICKES, Alessandro GHIELMI
  • Publication number: 20230374679
    Abstract: A catalyst-coated membrane includes a proton-exchange membrane, an anode applied to a first side of the membrane, including at least one noble-metal-containing catalyst, an areal weight of the noble-metal-containing catalyst, based on the noble metal content, being less than or equal to 0.6 mg/cm2, and a cathode applied to a second side of the membrane, wherein an areal expansion of the catalyst-coated membrane is less than 20% after being held for two hours in water heated to 100° C.
    Type: Application
    Filed: October 7, 2021
    Publication date: November 23, 2023
    Inventors: Alessandro Ghielmi, Dominik Gehrig, Jan Byrknes, Jens-Peter Suchsland, Christian Eickes
  • Publication number: 20220255088
    Abstract: A membrane electrode assembly includes a cathode, an anode and a proton-conductive membrane, wherein the cathode includes a first metal-containing catalyst and a proton-conductive ionomer, the anode includes a proton-conductive ionomer, a second metal-containing catalyst that catalyzes the reaction of hydrogen to protons, and a third metal-containing catalyst that catalyzes the reaction of CO to CO2, a total mass ratio of platinum of the second catalyst and platinum of the third catalyst to a total mass ratio of metals of the second catalyst and the third catalyst, with the exception of platinum, is greater than 3:1, and the total mass per unit area of platinum of the second catalyst and platinum of the third catalyst is less than 0.4 mg/cm2.
    Type: Application
    Filed: July 10, 2020
    Publication date: August 11, 2022
    Inventors: Jens-Peter Suchsland, Thomas Martin, Matthias Binder, Dominik Gehrig, Christian Eickes
  • Publication number: 20150014167
    Abstract: The present invention is directed to electrochemical gas sensors for the detection of combustible, flammable or toxic gases and to catalyst-coated membranes (CCMs) used therein. The gas sensor comprises at least one solid anion exchange membrane (AEM), a sensing electrode and a counter electrode. The sensing electrode comprises catalytically active material and anionic ionomer material, the weight ratio between the catalyst material and the anionic ionomer material in the sensing electrode is in the range of 3/1 to 99/1, preferably in the range of 4/1 to 30/1. Due to the use of anion exchange ionomer materials, the sensor can be made less expensive and suitable for high volume production. When applied for the detection of CO, the sensor shows good CO selectivity S(CO/H2) in the presence of hydrogen.
    Type: Application
    Filed: March 14, 2013
    Publication date: January 15, 2015
    Applicant: SOLVICORE GMBH & CO. KG
    Inventors: Holger Dziallas, Jan Byrknes, Christian Eickes, Alessandro Ghielmi
  • Patent number: 8512912
    Abstract: The invention relates to a membrane electrode unit (MEU) for electrochemical apparatuses, in particular for direct methanol fuel cells (DMFC). The membrane electrode unit contains backings (i.e. gas diffusion layers) on the anode side and cathode side, which have a different water tightness (WT). The anode backing must have a lower water tightness (i.e. a higher water permeability) than the cathode backing, where WTAnode<WTCathode. The anode backing preferably has no compensating layer (microlayer), has a lower content of water repellent (from 2 to 10 wt.-%, based on the total weight) and has a higher total pore volume (VTot) than the cathode backing. The membrane electrode units produced have a substantially improved performance in DMFC fuel cells which are operated with aqueous methanol solution.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: August 20, 2013
    Assignee: Umicore AG & Co. KG
    Inventors: Joachim Koehler, Sandra Wittpahl, Holger Dziallas, Christian Eickes
  • Publication number: 20070298312
    Abstract: The invention relates to a membrane electrode unit (MEU) for electrochemical apparatuses, in particular for direct methanol fuel cells (DMFC). The membrane electrode unit contains backings (i.e. gas diffusion layers) on the anode side and cathode side, which have a different water tightness (WT). The anode backing must have a lower water tightness (i.e. a higher water permeability) than the cathode backing, where WTAnode<WTCathode. The anode backing preferably has no compensating layer (microlayer), has a lower content of water repellent (from 2 to 10 wt.-%, based on the total weight) and has a higher total pore volume (VTot) than the cathode backing. The membrane electrode units produced have a substantially improved performance in DMFC fuel cells which are operated with aqueous methanol solution.
    Type: Application
    Filed: May 25, 2005
    Publication date: December 27, 2007
    Applicant: UMICORE AG & CO.KG
    Inventors: Joachim Koehler, Sandra Wittpahl, Holger Dziallas, Christian Eickes