WO/2015/072229 FUEL CELL SYSTEM||WO||21.05.2015|
||PCT/JP2014/075490||NISSAN MOTOR CO., LTD.||IKEDA, Nobuhisa|
A fuel cell
system comprises: a cathode pressure control unit for, based on the load of a fuel cell
stack, controlling the pressure of a cathode gas supplied to the fuel cell
stack; and an anode pressure control unit for controlling the pressure of an anode gas supplied to the fuel cell
stack to a pressure greater than or equal to the pressure of the cathode gas so that the pressure difference between the pressure of the cathode gas and the pressure of the anode gas becomes a predetermined pressure difference or less. When returned from no idling, the anode pressure control unit controls the pressure of the anode gas supplied to the fuel cell
stack to a return-time pressure which is obtained by adding the predetermined pressure difference to a predetermined pressure equivalent to atmospheric pressure.
WO/2015/072082 PROTECTION FOR SEAL FOR FUEL CELL SEPARATOR||WO||21.05.2015|
||PCT/JP2014/005273||TOYOTA JIDOSHA KABUSHIKI KAISHA||KURIHARA, Takuya|
The present invention addresses the problem of improving the durability of a sealing member such as a gasket. A bottom part (23) functions as a sealing surface which comes into contact with a gasket (40) interposed between adjacent cells. A cooling water manifold (411) functions as a cooling water path which penetrates a fuel cell
separator in the thickness direction. A flange (24) bulges from one surface of a first separator in the thickness direction and surrounds a section of the cooling water manifold (411). A region between the edge parts (T1, T2) on both edge surfaces of the flange (24) functions as an opening part (K) which forms a path in the surface direction of the first separator. An inclined surface (22) positioned on a restriction line (RL) on the flange (24) faces the gasket (40) in order to restrict the movement of the gasket (40) of an adjacent cell. Edge part (T1) is located on the restriction line (RL), and a protective film (70) for protecting the gasket covers the surface of edge part (T1), which faces the gasket (40).
WO/2015/073286 METHODS FOR DETERMINING STATE OF CHARGE AND CALIBRATING REFERENCE ELECTRODES IN A REDOX FLOW BATTERY||WO||21.05.2015|
||PCT/US2014/064251||LOCKHEED MARTIN ADVANCED ENERGY STORAGE, LLC||MORRIS-COHEN, Adam|
The invention concerns methods of determining the state of charge of a half-cell within a redox flow battery, the method comprising: (i) measuring the rate of change in equilibrium half- cell reduction potential of the electrolyte as charge is passed into the electrolyte solution within the cell; and (ii) correlating said rate of change in equilibrium half-cell reduction potential with the state of charge of said half-cell. Other aspects of the invention concern balancing the state of charge of a flow battery and methods of calibrating an oxidation/reduction probe.
WO/2015/073795 METHOD FOR OPERATING A HEATER||WO||21.05.2015|
||PCT/US2014/065652||DELPHI TECHNOLOGIES, INC.||FISCHER, Bernard, A.|
A method is provided for operating a heater including a heater housing extending along a heater axis; a plurality of fuel cell
stack assemblies disposed within the heater housing along the heater axis and having a plurality of fuel cells
which convert chemical energy from a fuel cell
fuel into heat and electricity through a chemical reaction with a fuel cell
oxidizing agent; and a plurality of combustors disposed within the heater housing along the heater axis. The method includes supplying a combustor fuel to the plurality of combustors, combusting the combustor fuel to produce a heated combustor exhaust when the fuel cell
stack assemblies are substantially electrochemically inactive, and using the heated combustor exhaust to elevate the temperature of the fuel cell
stack assemblies to be electrochemically active.
WO/2015/071645 FUEL CELL ASSEMBLY AND METHOD FOR OPERATING THE SAME BY MONITORING OXIDATION STATES||WO||21.05.2015|
||PCT/GB2014/053322||ACAL ENERGY LTD||LONGMAN, Robert|
A fuel cell
assembly (101) comprises an electrode (1601) in a reaction region, the assembly (101) configured with an electrolyte flow path (601 ) for flowing communication of an electrolyte with the electrode (1601); a supply device (1701) for controllably supplying a regeneration component to the electrolyte; and a monitor device (801) operable to monitor the oxidation state of the electrolyte. The electrolyte comprises a redox couple, the oxidation state of which changes with both reaction at the electrode (1601) and contact with the regeneration component. The monitor device (801) is configured to output a signal representative of the oxidation state of the electrolyte and the supply device (1701) is configured to be responsive to the output of the signal to control supply of the regeneration component to the electrolyte.
WO/2015/074006 ELECTROCHEMICAL DEVICES COMPRISING COMPRESSED GAS SOLVENT ELECTROLYTES||WO||21.05.2015|
||PCT/US2014/066015||THE REGENTS OF THE UNIVERSITY OF CALIFORNIA||RUSTOMJI, Cyrus|
Disclosed are novel electrolytes, and techniques for making and devices using such electrolytes, which are based on compressed gas solvents. Unlike conventional electrolytes, disclosed electrolytes are based on "compressed gas solvents" mixed with various salts, referred to as "compressed gas electrolytes." Various embodiments of a compressed gas solvent includes a material that is in a gas phase and has a vapor pressure above an atmospheric pressure at a room temperature. The disclosed compressed gas electrolytes can have wide electrochemical potential windows, high conductivity, low temperature capability and/or high pressure solvent properties.
WO/2015/072096 SEPARATOR FOR FUEL CELL, AND FUEL CELL STACK||WO||21.05.2015|
||PCT/JP2014/005466||TOYOTA JIDOSHA KABUSHIKI KAISHA||KURIHARA, Takuya|
The present invention evenly cools a fuel cell
stack in the vertical direction. In a fuel cell
stack, an anode-side separator disposed between multiple membrane electrode assemblies is provided with: a separator center region which faces the power generation region of the membrane electrode assemblies; an outer edge part which extends from the separator center region to the outer edge and which has multiple openings for a cooling medium supply manifold; and ribs formed so as to extend from beam parts, which divide adjacent openings for a cooling medium supply manifold, to a region between the separator center region and the openings for a cooling medium supply manifold.
WO/2015/072372 RELEASE FILM, LAMINATE AND METHOD FOR MANUFACTURING SAME, AND METHOD FOR MANUFACTURING FUEL CELL||WO||21.05.2015|
||PCT/JP2014/079256||DAICEL CORPORATION||ONOMICHI Hiroshi|
A release layer of a release film for manufacturing a membrane electrode assembly of a solid polymer fuel cell
is formed from a cyclic olefin resin containing an olefin unit having a C3-10 alkyl group in a side chain. The glass transition temperature of the release layer may be approximately 210-350°C. The dynamic storage modulus E' of the release layer may have a transition point in the range from -50 to 100°C. An ion exchange layer containing an ion exchange resin may be laminated on the release layer of the release film by a roll-to-roll method to produce a laminate. The release film may be released from the laminate to produce a membrane electrode assembly. The release film makes it possible to improve the productivity of a membrane electrode assembly (electrolyte membrane and/or electrode film) of a solid polymer fuel cell
WO/2015/074065 ELECTROCHEMICAL SEPARATORS WITH INSERTED CONDUCTIVE LAYERS||WO||21.05.2015|
||PCT/US2014/066200||CALIFORNIA INSTITUTE OF TECHNOLOGY||ROUMI, Farshid|
Disclosed are electrochemical cells including a composite separator capable of changing the performance of the cell by a) changing the internal electric field of the cell, b) activating lost active material, c) providing an auxiliary current collector for an electrode and/or d) limiting or preventing hot spots and/or thermal runaway upon formation of an electronic short in the system. An exemplary composite separator includes at least one electronically conducting layer and at least one electronically insulating layer. Another exemplary composite separator includes an electronically conducting layer and a solid ionic conductor. Also disclosed are methods for detecting and managing the onset of a short in an electrochemical cell and for charging an electrochemical cell.
WO/2015/072452 ELECTRODE MATERIAL, REDOX FLOW BATTERY ELECTRODE, REDOX FLOW BATTERY, AND METHOD FOR PRODUCING ELECTRODE MATERIAL||WO||21.05.2015|
||PCT/JP2014/079842||SHOWA DENKO K.K.||HANAWA Kenzo|
This redox flow battery contains first carbon nanotubes having an average diameter of at least 100 nm and second carbon nanotubes having an average diameter of no greater than 30 nm, the second carbon nanotubes are adhered to the surfaces of the first carbon nanotubes, and the second carbon nanotubes have a structure straddling between a plurality of first carbon nanotubes. The redox flow battery has a high electromotive force and a large charging capacity due to having an electrode material and electrodes using the electrode material.