Patents by Inventor Sathya Motupally
Sathya Motupally 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).
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Patent number: 9997794Abstract: A membrane electrode assembly is provided which includes an anode; a cathode; a membrane between the anode and the cathode; and a protective layer between the membrane and at least one electrode of the anode and the cathode, the protective layer having a layer of ionomer material containing a catalyst, the layer having a porosity of between 0 and 10%, an ionomer content of between 50 and 80% vol., a catalyst content of between 10 and 50% vol., and an electrical connectivity between catalyst particles of between 35 and 75%. A configuration using a precipitation layer to prevent migration of catalyst ions is also provided.Type: GrantFiled: April 1, 2015Date of Patent: June 12, 2018Assignee: Audi AGInventors: Sergei F. Burlatsky, Ned E. Cipollini, David A. Condit, Thomas H. Madden, Sathya Motupally, Lesia V. Protsailo, Timothy W. Patterson, Lei Chen, Mallika Gummalla
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Patent number: 9803058Abstract: An ion exchange membrane (52) for a fuel cell comprises a polymer having an acid functional group normally including protons, and having alkali metal ions partially ion-exchanged with the protons of the acid functional group of the membrane. The partial ion exchange of alkali metal ions into the membrane relates either to patterning of the exchanged ion make-up of the membrane, with some being ion exchanged and some not, or to the extent or concentration of the ion exchange in any particular location, or to both.Type: GrantFiled: June 24, 2008Date of Patent: October 31, 2017Assignee: Audi AGInventors: Vishal Onkarmal Mittal, Lesia V. Protsailo, Sathya Motupally
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Patent number: 9484580Abstract: An example fuel cell electrode forming method includes covering at least a portion of a copper monolayer with a liquid platinum and replacing the copper monolayer to form a platinum monolayer from the liquid platinum.Type: GrantFiled: June 22, 2012Date of Patent: November 1, 2016Assignee: Audi AGInventors: Minhua Shao, Sathya Motupally, Belabbes Merzougui, Lesia V. Protsailo
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Patent number: 9455450Abstract: A membrane electrode assembly includes an anode including a hydrogen oxidation catalyst; a cathode; a membrane disposed between the anode and the cathode; and a peroxide decomposition catalyst positioned in at least one position selected from the group consisting of a layer between the anode and the membrane and a layer between the cathode and the membrane wherein the peroxide decomposition catalyst has selectivity when exposed to hydrogen peroxide toward reactions which form benign products from the hydrogen peroxide. The peroxide decomposition catalyst can also be positioned within the membrane. Also disclosed is a power-generating fuel cell system including such a membrane electrode assembly, and a process for operating such a fuel cell system. The assembly components contain ionomer material which can be perfluorinated or non-perfluorinated, high temperature, hydrocarbon, and the like.Type: GrantFiled: June 26, 2015Date of Patent: September 27, 2016Assignee: Audi AGInventors: Ned E. Cipollini, David A. Condit, Jared B. Hertzberg, Thomas D. Jarvi, James A. Leistra, Michael L. Perry, Sathya Motupally
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Publication number: 20160006038Abstract: A sheet of fiber carbon paper (9) is advanced from a first roll on a spindle (11) around a roller (14) to a second roll around a spindle (15). Bending of the sheet of fiber carbon paper around the roller (14) causes fibers that are prone to disentangle to protrude outwardly from the surface and are shaved off by a razor-sharp edge (17) affixed to a stationary point (18). Alternatively, carbon fiber elements, such as a fuel cell gas diffusion layer (20) may be fixed in an arcuate jig (22) and a razor-sharp edge (31) may revolve along the surface of the element to cut off any protruding fibers.Type: ApplicationFiled: February 20, 2014Publication date: January 7, 2016Inventor: Sathya MOTUPALLY
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Publication number: 20150380742Abstract: A membrane electrode assembly includes an anode including a hydrogen oxidation catalyst; a cathode; a membrane disposed between the anode and the cathode; and a peroxide decomposition catalyst positioned in at least one position selected from the group consisting of a layer between the anode and the membrane and a layer between the cathode and the membrane wherein the peroxide decomposition catalyst has selectivity when exposed to hydrogen peroxide toward reactions which form benign products from the hydrogen peroxide. The peroxide decomposition catalyst can also be positioned within the membrane. Also disclosed is a power-generating fuel cell system including such a membrane electrode assembly, and a process for operating such a fuel cell system. The assembly components contain ionomer material which can be perfluorinated or non-perfluorinated, high temperature, hydrocarbon, and the like.Type: ApplicationFiled: June 26, 2015Publication date: December 31, 2015Inventors: Ned E. Cipollini, David A. Condit, Jared B. Hertzberg, Thomas D. Jarvi, James A. Leistra, Michael L. Perry, Sathya Motupally
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Publication number: 20150349362Abstract: A membrane electrode assembly is provided which includes an anode; a cathode; a membrane between the anode and the cathode; and a protective layer between the membrane and at least one electrode of the anode and the cathode, the protective layer having a layer of ionomer material containing a catalyst, the layer having a porosity of between 0 and 10%, an ionomer content of between 50 and 80% vol., a catalyst content of between 10 and 50% vol., and an electrical connectivity between catalyst particles of between 35 and 75%. A configuration using a precipitation layer to prevent migration of catalyst ions is also provided.Type: ApplicationFiled: April 1, 2015Publication date: December 3, 2015Inventors: Sergei F. Burlatsky, Ned E. Cipollini, David A. Condit, Thomas H. Madden, Sathya Motupally, Lesia V. Protsailo, Timothy W. Patterson, Lei Chen, Mallika Gummalla
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Patent number: 9118081Abstract: A membrane electrode assembly includes an anode including a hydrogen oxidation catalyst; a cathode; a membrane disposed between the anode and the cathode; and a peroxide decomposition catalyst positioned in at least one position selected from the group consisting of a layer between the anode and the membrane and a layer between the cathode and the membrane wherein the peroxide decomposition catalyst has selectivity when exposed to hydrogen peroxide toward reactions which form benign products from the hydrogen peroxide. The peroxide decomposition catalyst can also be positioned within the membrane. Also disclosed is a power-generating fuel cell system including such a membrane electrode assembly, and a process for operating such a fuel cell system. The assembly components contain ionomer material which can be perfluorinated or non-perfluorinated, high temperature, hydrocarbon, and the like.Type: GrantFiled: December 28, 2004Date of Patent: August 25, 2015Assignee: Audi AGInventors: Ned E. Cipollini, David A. Condit, Jared B. Hertzberg, Thomas D. Jarvi, James A. Leistra, Michael L. Perry, Sathya Motupally
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Patent number: 9023551Abstract: A membrane electrode assembly is provided which includes an anode; a cathode; a membrane between the anode and the cathode; and a protective layer between the membrane and at least one electrode of the anode and the cathode, the protective layer having a layer of ionomer material containing a catalyst, the layer having a porosity of between 0 and 10%, an ionomer content of between 50 and 80% vol., a catalyst content of between 10 and 50% vol., and an electrical connectivity between catalyst particles of between 35 and 75%. A configuration using a precipitation layer to prevent migration of catalyst ions is also provided.Type: GrantFiled: January 3, 2008Date of Patent: May 5, 2015Assignee: Ballard Power Systems Inc.Inventors: Sergei F. Burlatsky, Ned E. Cipollini, David A. Condit, Thomas H. Madden, Sathya Motupally, Lesia V. Protsailo, Timothy W. Patterson, Lei Chen, Mallika Gummalla
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Publication number: 20130340915Abstract: An example fuel cell electrode forming method includes covering at least a portion of a copper monolayer with a liquid platinum and replacing the copper monolayer to form a platinum monolayer from the liquid platinum.Type: ApplicationFiled: June 22, 2012Publication date: December 26, 2013Inventors: Minhua Shao, Sathya Motupally, Belabbes Merzougui, Lesia V. Protsailo
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Patent number: 8288054Abstract: A membrane electrode assembly includes an anode, a cathode, a membrane disposed between the anode and the cathode, wherein at least one of the anode, cathode and membrane contains a hydrocarbon ionomer, and an electrode catalyst disposed in at least one of the anode and the cathode, wherein the catalyst is a metal alloy catalyst.Type: GrantFiled: October 27, 2005Date of Patent: October 16, 2012Assignee: UTC Power CorporationInventors: Sathya Motupally, Ned Cipollini, Lesia Protsailo, Andrew Haug, Tommy Skiba, Chi-Hum Paik
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Patent number: 8088519Abstract: Battery cartridges are disclosed that include a housing having a plurality of air access openings configured to selectively control flow of air into the housing; and at least two adjacent metal-air electrochemical cells within the housing, each electrochemical cell having an outer gas permeable barrier membrane layer that defines the exterior surface of the electrochemical cell; wherein there is a gap between adjacent electrochemical cells in the housing and wherein the air access openings in the housing are positioned over or partially overlapping each gap.Type: GrantFiled: March 17, 2010Date of Patent: January 3, 2012Assignee: The Gillette CompanyInventors: G. Steven Kelsey, Yelena Kouznetsova, Boris Makovetski, Sathya Motupally, Jonathan O'Neill, David L. Pappas, Robert Pavlinsky, Oleg Podoprigora, Thomas Richards, William Wandeloski
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Publication number: 20110045382Abstract: An ion exchange membrane (52) for a fuel cell comprises a polymer having an acid functional group normally including protons, and having alkali metal ions partially ion-exchanged with the protons of the acid functional group of the membrane. The partial ion exchange of alkali metal ions into the membrane relates either to patterning of the exchanged ion make-up of the membrane, with some being ion exchanged and some not, or to the extent or concentration of the ion exchange in any particular location, or to both.Type: ApplicationFiled: June 24, 2008Publication date: February 24, 2011Inventors: Vishal Onkarmal Mittal, Lesia V. Protsailo, Sathya Motupally
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Publication number: 20110020727Abstract: A membrane electrode assembly is provided which includes an anode; a cathode; a membrane between the anode and the cathode; and a protective layer between the membrane and at least one electrode of the anode and the cathode, the protective layer having a layer of ionomer material containing a catalyst, the layer having a porosity of between 0 and 10%, an ionomer content of between 50 and 80% vol., a catalyst content of between 10 and 50% vol., and an electrical connectivity between catalyst particles of between 35 and 75%. A configuration using a precipitation layer to prevent migration of catalyst ions is also provided.Type: ApplicationFiled: January 3, 2008Publication date: January 27, 2011Applicant: UTC POWER CORPORATIONInventors: Sergei F. Burlatsky, Ned E. Cipollini, David A. Condit, Thomas H. Madden, Sathya Motupally, Lesia V. Protsailo, Timothy W. Patterson, Lei Chen, Mallika Gummalla
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MEMBRANE ELECTRODE ASSEMBLY HAVING PROTECTIVE BARRIER LAYER AND METHOD FOR MITIGATING MEMBRANE DECAY
Publication number: 20100209805Abstract: A membrane electrode assembly (10) includes an anode (16); a cathode (14), a membrane (12) between the anode and the cathode; and a protective barrier layer (22) between the membrane and at least one of the anode and the cathode, the protective barrier layer being adapted to restrict migration of at least one of oxygen and hydrogen from the anode and/or cathode to the membrane. The barrier layer keeps a plane of polarized charge (Xo) outside of the membrane and helps avoid formation of disconnected catalyst.Type: ApplicationFiled: October 24, 2006Publication date: August 19, 2010Applicant: UTC POWER CORPORATIONInventors: Shruti Modi Gupta, Tommy Skiba, Sathya Motupally -
Publication number: 20100178540Abstract: A non-hermetically sealed, electrochemical power source, includes a first electrode, a second electrode, a separator between the first electrode and the second electrode, and a membrane in fluid communication with an environment external to the battery. The second electrode is between the separator and the membrane. The membrane includes a first portion having a different property, e.g., density, porosity, mass transport resistance, thickness, or gas permeability, than a second portion of the membrane. Methods of designing an electrochemical cell cartridge are also disclosed.Type: ApplicationFiled: March 17, 2010Publication date: July 15, 2010Inventors: G. Steven Kelsey, Yelena Kouznetsova, Boris Makovetski, Sathya Motupally, Jonathan O'Neill, David L. Pappas, Robert Pavlinsky, Oleg Podoprigora, Thomas Richards, William Wandeloski
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Patent number: 7704621Abstract: A battery includes a cathode having an interior surface and an exterior surface, and defining a cavity and two open ends; a separator disposed adjacent to the interior surface of the cathode; an anode disposed adjacent to the separator and inside the cavity; an air-permeable, liquid-impermeable barrier layer disposed adjacent to the exterior surface of the cathode, and defining an exterior surface of the battery; two end members connected to the open ends of the cathode; and an anode current collector extending through the two end members. Methods designed such a battery is also disclosed.Type: GrantFiled: April 4, 2006Date of Patent: April 27, 2010Assignee: The Gillette CompanyInventors: G. Steven Kelsey, Yelena Kouznetsova, Boris Makovetski, Sathya Motupally, Jonathan O'Neill, David L. Pappas, Robert Pavlinsky, Oleg Podoprigora, Thomas Richards, William Wandeloski
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Publication number: 20100092815Abstract: A membrane electrode assembly includes an anode; a cathode; a membrane between the anode and the cathode and having a thickness defined between the anode and the cathode; and a catalyst diffusion barrier layer in a location bounded on one side by an interface between the membrane and the cathode, and bounded on the other side by a plane approximately 50% of the thickness of the membrane from the cathode. A method of manufacture is also provided.Type: ApplicationFiled: April 30, 2007Publication date: April 15, 2010Applicant: UTC POWER CORPORATIONInventors: David A. Condit, Sergei F. Burlatsky, Ned E. Cipollini, Thomas H. Madden, Sathya Motupally
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Publication number: 20100068566Abstract: A method and apparatus for mitigating decay of multiple membrane electrode assemblies (20) in a fuel cell stack (12). Each membrane electrode assembly (20) includes an anode (16) and a cathode (18) on respectively opposite sides of a proton exchange membrane (14). The positioning of a plane of potential change (Xo) is controlled to be/maintained outside the membrane and within the cathode of each membrane electrode assembly, both during regular electrical load cycling and during relatively idle operation of a primary electrical load (28) connected to the fuel cell stack. A determination (22, 24, 54, 50) of electrical demand on the fuel cell stack is reflective of either regular electrical load cycling or relatively idle operation, and during relatively idle operation a secondary electrical load (52) is connected (26, 24?) to the stack and/or a flow of air (36) to the cathode is regulated (62, 60) to maintain the plane of potential change (Xo) outside the membrane.Type: ApplicationFiled: December 21, 2006Publication date: March 18, 2010Inventors: Sathya Motupally, Carl A. Reiser
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Publication number: 20080286616Abstract: A membrane electrode assembly includes an anode, a cathode, a membrane disposed between the anode and the cathode, wherein at least one of the anode, cathode and membrane contains a hydrocarbon ionomer, and an electrode catalyst disposed in at least one of the anode and the cathode, wherein the catalyst is a metal alloy catalyst.Type: ApplicationFiled: October 27, 2005Publication date: November 20, 2008Applicant: UTC POWER CORPORATIONInventors: Sathya Motupally, Ned Cipollini, Lesia Protsailo, Andrew Haug, Tommy Skiba, Chi-Hum Paik