Patents by Inventor Cynthia Rice

Cynthia Rice 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).

  • Patent number: 11233249
    Abstract: An improved or advanced electrically conductive selectively gas permeable anode flow field (SGPFF) design, allowing for efficient removal of CO2 perpendicular to the active area near the location where it is formed in the catalyst layer. The anode plate design includes two mating flow fields (an anode gaseous flow field, and an anode liquid flow field) separated by a semi-permeable separator. The separator comprises a hydrophobic semi-permeable separator for CO2 diffusive gas transport from the liquid side (with formic acid, water, and CO2) to the gaseous side (allowing for CO2 removal to the atmosphere).
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: January 25, 2022
    Assignee: Tennessee Technological University
    Inventors: Cynthia Rice, Shadi A. Saeed, Michael Renfro, Antonio Pistono
  • Publication number: 20060257700
    Abstract: A freeze tolerant fuel cell power plant (10) includes at least one fuel cell (12), a coolant loop (18) including a freeze tolerant accumulator (22) for storing and separating a water immiscible fluid and water coolant or water component, a direct contact heat exchanger (56) for mixing the water immiscible fluid and the water coolant within a mixing region (72) of the heat exchanger (56), a coolant pump (21) for circulating the coolant through the coolant loop (18), a radiator loop (84) for circulating the water immiscible fluid through the heat exchanger (56), and a radiator (86) for removing heat from the coolant. The plant (10) utilizes the water immiscible fluid during steady-state operation to cool the fuel cell and during shut down of the plant to displace water from the fuel cell (12) to the freeze tolerant accumulator (22).
    Type: Application
    Filed: July 21, 2006
    Publication date: November 16, 2006
    Inventors: Jeremy Schrooten, Wayde Schmidt, Cynthia Rice, Michael Perry, H. Michels, Jesse Marzullo, Patrick Hagans
  • Patent number: 7132188
    Abstract: A direct organic fuel cell includes a formic acid fuel solution having between about 10% and about 95% formic acid. The formic acid is oxidized at an anode. The anode may include a Pt/Pd catalyst that promotes the direct oxidation of the formic acid via a direct reaction path that does not include formation of a CO intermediate.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: November 7, 2006
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Richard I. Masel, Cynthia A. Rice, Piotr Waszczuk, Andrzej Wieckowski
  • Patent number: 7108773
    Abstract: A solution useful for forming a solid that supports mass transfer includes carbon nanotubes and a solvent. Solids formed using the solution thereby have carbon nanotubes dispersed therein that are useful for communicating gas and/or electric charges within the solid. Catalyst layers of the invention that include carbon nanotubes can provide high levels of efficiency while requiring low catalyst concentrations.
    Type: Grant
    Filed: September 11, 2002
    Date of Patent: September 19, 2006
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Richard I. Masel, Cynthia A. Rice
  • Publication number: 20060188767
    Abstract: A direct organic fuel cell includes a formic acid fuel solution having between about 10% and about 95% formic acid. The formic acid is oxidized at an anode. The anode may include a Pt/Pd catalyst that promotes the direct oxidation of the formic acid via a direct reaction path that does not include formation of a CO intermediate.
    Type: Application
    Filed: December 16, 2005
    Publication date: August 24, 2006
    Inventors: Richard Masel, Cynthia Rice, Piotr Waszczuk, Andrzej Wieckwski
  • Patent number: 7090940
    Abstract: A freeze tolerant fuel cell power plant (10) includes at least one fuel cell (12), a coolant loop (18) including a freeze tolerant accumulator (22) for storing and separating a water immiscible fluid and water coolant, a direct contact heat exchanger (56) for mixing the water immiscible fluid and the water coolant within a mixing region (72) of the heat exchanger (56), a coolant pump (21) for circulating the coolant through the coolant loop (18), a radiator loop (84) for circulating the water immiscible fluid through the heat exchanger (56), and a radiator (86) for removing heat from the coolant. The plant (10) utilizes the water immiscible fluid during steady-state operation to cool the fuel cell and during shut down of the plant to displace water from the fuel cell (12) to the freeze tolerant accumulator (22).
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: August 15, 2006
    Assignee: UTC Fuel Cells, LLC
    Inventors: Jeremy A. Schrooten, Wayde R. Schmidt, Cynthia A. Rice, Michael L. Perry, H. Harvey Michels, Jesse M. Marzullo, Patrick L. Hagans
  • Patent number: 6962760
    Abstract: Methods for conditioning the membrane electrode assembly of a direct methanol fuel cell (“DMFC”) are disclosed. In a first method, an electrical current of polarity opposite to that used in a functioning direct methanol fuel cell is passed through the anode surface of the membrane electrode assembly. In a second method, methanol is supplied to an anode surface of the membrane electrode assembly, allowed to cross over the polymer electrolyte membrane of the membrane electrode assembly to a cathode surface of the membrane electrode assembly, and an electrical current of polarity opposite to that in a functioning direct methanol fuel cell is drawn through the membrane electrode assembly, wherein methanol is oxidized at the cathode surface of the membrane electrode assembly while the catalyst on the anode surface is reduced. Surface oxides on the direct methanol fuel cell anode catalyst of the membrane electrode assembly are thereby reduced.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: November 8, 2005
    Assignee: The Regents of the University of California
    Inventors: Cynthia Rice, Xiaoming Ren, Shimshon Gottesfeld
  • Publication number: 20050095476
    Abstract: A freeze tolerant fuel cell power plant (10) includes at least one fuel cell (12), a coolant loop (18) including a freeze tolerant accumulator (22) for storing and separating a water immiscible fluid and water coolant, a direct contact heat exchanger (56) for mixing the water immiscible fluid and the water coolant within a mixing region (72) of the heat exchanger (56), a coolant pump (21) for circulating the coolant through the coolant loop (18), a radiator loop (84) for circulating the water immiscible fluid through the heat exchanger (56), and a radiator (86) for removing heat from the coolant. The plant (10) utilizes the water immiscible fluid during steady-state operation to cool the fuel cell and during shut down of the plant to displace water from the fuel cell (12) to the freeze tolerant accumulator (22).
    Type: Application
    Filed: November 5, 2003
    Publication date: May 5, 2005
    Inventors: Jeremy Schrooten, Wayde Schmidt, Cynthia Rice, Michael Perry, H. Michels, Jesse Marzullo, Patrick Hagans
  • Publication number: 20040191584
    Abstract: Methods for conditioning the membrane electrode assembly of a direct methanol fuel cell (“DMFC”) are disclosed. In a first method, an electrical current of polarity opposite to that used in a functioning direct methanol fuel cell is passed through the anode surface of the membrane electrode assembly. In a second method, methanol is supplied to an anode surface of the membrane electrode assembly, allowed to cross over the polymer electrolyte membrane of the membrane electrode assembly to a cathode surface of the membrane electrode assembly, and an electrical current of polarity opposite to that in a functioning direct methanol fuel cell is drawn through the membrane electrode assembly, wherein methanol is oxidized at the cathode surface of the membrane electrode assembly while the catalyst on the anode surface is reduced. Surface oxides on the direct methanol fuel cell anode catalyst of the membrane electrode assembly are thereby reduced.
    Type: Application
    Filed: June 12, 2003
    Publication date: September 30, 2004
    Inventors: Cynthia Rice, Xiaoming Ren, Shimshon Gottesfeld
  • Publication number: 20040045816
    Abstract: A solution useful for forming a solid that supports mass transfer includes carbon nanotubes and a solvent. Solids formed using the solution thereby have carbon nanotubes dispersed therein that are useful for communicating gas and/or electric charges within the solid. Catalyst layers of the invention that include carbon nanotubes can provide high levels of efficiency while requiring low catalyst concentrations.
    Type: Application
    Filed: September 11, 2002
    Publication date: March 11, 2004
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: Richard I. Masel, Cynthia A. Rice
  • Publication number: 20030198852
    Abstract: A direct organic fuel cell includes a formic acid fuel solution having between about 10% and about 95% formic acid. The formic acid is oxidized at an anode. The anode may include a Pt/Pd catalyst that promotes the direct oxidation of the formic acid via a direct reaction path that does not include formation of a CO intermediate.
    Type: Application
    Filed: April 4, 2003
    Publication date: October 23, 2003
    Applicant: The Board of Trustees of the University of Illinoi
    Inventors: Richard I. Masel, Cynthia A. Rice, Piotr Waszczuk, Andrzej Wieckowski