Passive water management techniques in direct methanol fuel cells

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7282293
APP PUB NO 20040209154A1
SERIAL NO

10454211

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

Passive water management techniques are provided in an air-breathing direct oxidation fuel cell system. A highly hydrophobic component with sub-micrometer wide pores is laminated to the catalyzed membrane electrolyte on the cathode side. This component blocks liquid water from traveling out of the cathode and instead causes the water to be driven through the polymer membrane electrolyte to the cell anode. The air-breathing direct oxidation fuel cell also includes a layer of cathode backing and additional cathode filter components on an exterior aspect of the cell cathode which lessen the water vapor escape rate from the cell cathode. The combination of the well laminated hydrophobic microporous layer, the thicker backing and the added filter layer, together defines a cathode structure of unique water management capacity, that enables to operate a DMFC with direct, controlled rate supply of neat (100%) methanol, without the need for any external supply or pumping of water. The cell anode is provided with a hydrophilic backing layer. When the water is driven through the polymer membrane electrolyte from the cell cathode to the cell anode chamber, it is available for the anodic reaction, and any excess water is carried out along CO.sub.2 ventilation channels to the outside environment.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
MTI MICROFUEL CELLS INC.ALBANY, NY17

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gottesfeld, Shimshon Niskayuna, NY 44 1316
Kovacs, Frank W Waterford, NY 8 122
Ren, Xiaoming Menands, NY 32 458
Shufon, Kevin J Troy, NY 5 85

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
2004/0265,680 Simplified direct oxidation fuel cell system 14 2004
 
Detroit Center Tool (1)
5629104 Modular electrical energy device 23 1994
 
International Fuel Cells Corporation (1)
5573866 Direct methanol oxidation polymer electrolyte membrane power system 88 1995
 
BALLARD POWER SYSTEMS INC. (CANADIAN CORP. NO. 7076991) (1)
5686200 Electrochemical fuel cell assembly with compliant compression mechanism 43 1995
 
TEL AVIV UNIVERSITY FUTURE TECHNOLOGY DEVELOPMENT L.P. (1)
6447943 Fuel cell with proton conducting membrane with a pore size less than 30 nm 37 2000
 
UTC FUEL CELLS, LLC (1)
6024848 Electrochemical cell with a porous support plate 110 1998
 
CALIFORNIA INSTITUTE OF TECHNOLOGY (6)
5773162 Direct methanol feed fuel cell and system 112 1995
5945231 Direct liquid-feed fuel cell with membrane electrolyte and manufacturing thereof 103 1997
5992008 Direct methanol feed fuel cell with reduced catalyst loading 71 1998
6303244 Direct methanol feed fuel cell and system 50 1999
6420059 Direct methanol feed fuel cell and system 34 1999
6265093 Direct methanol feed fuel cell and system 56 1999
 
Analytic Power Corp. (1)
4593534 Electrochemically driven heat pump 51 1985
 
THE CHEMOURS COMPANY FC, LLC (1)
5795668 Fuel cell incorporating a reinforced membrane 68 1994
 
HITACHI, LTD. (5)
4612261 Fuel cell battery using acidic electrolyte 32 1982
4478917 Fuel cell 66 1983
4537840 Fuel cell using organic, high-molecular weight electrolyte 44 1983
4562123 Liquid fuel cell 57 1984
4810597 Fuel cell comprising a device for detecting the concentration of methanol 55 1985
 
GINER ELECTROCHEMICAL SYSTEMS, LLC (1)
5523177 Membrane-electrode assembly for a direct methanol fuel cell 84 1994
 
HONDA GIKEN KOGYO KABUSHIKI KAISHA (2)
5723228 Direct methanol type fuel cell 49 1996
6350540 Fuel cell with gas diffusion layer flow passage 20 1999
 
GOOGLE TECHNOLOGY HOLDINGS LLC (5)
5916699 Hybrid energy storage system 69 1997
6322918 Water management system for fuel cells 9 1999
6465119 Fuel cell array apparatus and method of fabrication 46 2000
6497975 Direct methanol fuel cell including integrated flow field and method of fabrication 36 2000
6660423 Direct methanol fuel cell including a water management system and method of fabrication 20 2000
 
MANHATTAN SCIENTIFICS, INC. (5)
4673624 Fuel cell 59 1984
5631099 Surface replica fuel cell 82 1995
5759712 Surface replica fuel cell for micro fuel cell electrical power pack 190 1997
6630266 Diffusion fuel ampoules for fuel cells 13 2001
6645651 Fuel generator with diffusion ampoules for fuel cells 50 2001
 
DENORA FUEL CELLS, S.P.A. (1)
* 5482792 Electrochemical cell provided with ion exchange membranes and bipolar metal plates 72 1994
 
KABUSHIKI KAISHA TOSHIBA (2)
5432023 Fuel cell 99 1994
6506513 Liquid fuel-housing tank for fuel cell and fuel cell 75 2000
 
GOOGLE INC. (3)
5723229 Portable fuel cell device including a water trap 29 1996
6268077 Portable fuel cell power supply 130 1999
6387559 Direct methanol fuel cell system and method of fabrication 32 2000
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (1)
5925476 Fuel-cells generator system and method of generating electricity from fuel cells 58 1997
 
MTI MICROFUEL CELLS INC. (4)
6632553 Methods and apparatuses for managing effluent products in a fuel cell system 15 2001
6566003 Method and apparatus for CO2 - driven air management for a fuel cell system 10 2001
6686081 Methods and apparatuses for a pressure driven fuel cell system 17 2001
6981877 Simplified direct oxidation fuel cell system 18 2002
 
Lockheed Idaho Technologies Company (1)
5641585 Miniature ceramic fuel cell 118 1995
 
DURACELL U.S. OPERATIONS, INC. (1)
6924055 Fuel delivery cartridge and anodic fuel receptor for a fuel cell 11 2002
 
Motoo; Satoshi (1)
4931168 Gas permeable electrode 57 1989
 
PATMARK COMPANY, INC. (1)
6492047 Fuel cell with proton conducting membrane 77 2000
 
SIEMENS AKTIENGESELLSCHAFT (1)
6509112 Direct methanol fuel cell (DMFC) 17 1998
 
LYNNTECH POWER SYSTEMS, LTD. (2)
6232010 Unitized barrier and flow control device for electrochemical reactors 38 1999
6410180 Fuel cell system for low pressure operation 40 2000
 
POLYFUEL, INC. (1)
7005206 Fuel cell assembly for portable electronic device and interface, control, and regulator circuit for fuel cell powered electronic device 10 2002
 
MCDERMOTT TECHNOLOGY, INC. (1)
5993986 Solide oxide fuel cell stack with composite electrodes and method for making 62 1997
 
FOSTER-MILLER, INC. (1)
6248469 Composite solid polymer electrolyte membranes 135 1999
 
PLUG POWER INC. (1)
6322917 Diagnostic method and control of preferential oxidation of carbon monoxide 40 1999
 
MORE ENERGY LTD. (1)
2002/0155,341 Self-managing electrochemical fuel cell and fuel cell anode 14 2001
 
NUCELLSYS GMBH (1)
5766786 Method and system for metered supply of methanol and/or water to a fuel-cell system 66 1995
 
KABUSHIKIKAISHA EQUOS RESEARCH (2)
5409785 Fuel cell and electrolyte membrane therefor 57 1992
5460896 Fuel cell 40 1994
 
UNIVERSITY OF SOUTH CAROLINA (1)
* 5863395 Electrochemical cell having a self-regulating gas diffusion layer 10 1997
 
W. L. GORE & ASSOCIATES, INC. (1)
6130175 Integral multi-layered ion-exchange composite membranes 43 1999
 
LOS ALAMOS NATIONAL SECURITY, LLC (3)
6296964 Enhanced methanol utilization in direct methanol fuel cell 47 1999
6458479 Air breathing direct methanol fuel cell 27 2000
6808838 Direct methanol fuel cell and system 19 2002
 
BASF AKTIENGESELLSCHAFT (1)
* 4828941 Methanol/air fuel cells 44 1987
 
UNIVERSITY OF SOUTHERN CALIFORNIA (1)
5599638 Aqueous liquid feed organic fuel cell using solid polymer electrolyte membrane 172 1993
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
ELBIT SYSTEMS LAND AND C4I LTD. (8)
7943258 Alkaline membrane fuel cells and apparatus and methods for supplying water thereto 1 2009
8304368 Catalyst coated membrane (CCM) and catalyst film/layer for alkaline membrane fuel cells and methods of making same 0 2010
* 2010/0216,052 Catalyst Coated Membrane (CCM) and Catalyst Film/Layer for Alkaline Membrane Fuel Cells and Methods of Making Same 5 2010
8895198 in alkaline fuel cells 0 2010
* 2011/0212,370 Systems and Methods of Securing Immunity to Air CO2 in Alkaline Fuel Cells 0 2010
8257872 Alkaline membrane fuel cells and apparatus and methods for supplying water thereto 0 2011
* 2011/0151,342 ALKALINE MEMBRANE FUEL CELLS AND APPARATUS AND METHODS FOR SUPPLYING WATER THERETO 1 2011
9214691 in alkaline fuel cells 0 2014
 
SIEMENS AKTIENGESELLSCHAFT (2)
* 7682725 Gas diffusion electrode and method for its production 0 2004
* 2005/0118,493 Gas diffusion electrode and method for its production 1 2004
 
AIR PRODUCTS AND CHEMICALS, INC. (2)
7591964 Electrochemical devices comprising proton conducting mediums 2 2007
* 2008/0090,132 Proton Conducting Mediums for Electrochemical Devices and Electrochemical Devices Comprising the Same 16 2007
 
HONEYWELL INTERNATIONAL INC. (2)
* 7727655 Fuel cell stack having catalyst coated proton exchange member 3 2005
* 2007/0092,785 Fuel cell stack 4 2005
 
MTI MICROFUEL CELLS INC. (2)
* 7541109 Passive water management techniques in direct methanol fuel cells 6 2007
* 2008/0032,182 PASSIVE WATER MANAGEMENT TECHNIQUES IN DIRECT METHANOL FUEL CELLS 6 2007
 
GM GLOBAL TECHNOLOGY OPERATIONS LLC (1)
* 7687185 Using sacrificial material to mitigate catalyst support corrosion in fuel cell electrode 1 2006
 
UNITED TECHNOLOGIES CORPORATION (2)
8177884 Fuel deoxygenator with porous support plate 0 2009
* 2010/0294,128 FUEL DEOXYGENATOR WITH POROUS SUPPORT PLATE 3 2009
 
CANON KABUSHIKI KAISHA (1)
8435695 Gas diffusion electrode, fuel cell, and manufacturing method for the gas diffusion electrode 0 2008
* Cited By Examiner

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Apr 16, 2019
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00