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8110517 |
Composites and composite membranes
The invention relates to a composite or a composite membrane consisting of an ionomer and of an inorganic optionally functionalized phyllosilicate. The isomer can be: (a) a cation exchange polymer;...
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8097135 |
Reversible electrochemical sensors for polyions
The present invention is directed to a reversible electrochemical sensor for polyions. The sensor uses active extraction and ion stripping, which are controlled electrochemically. Spontaneous...
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8071702 |
Low equivalent weight ionomer
An ionomer and a process for forming the ionomer such that the ionomer has (1) low equivalent weight (below 950, preferably between 625 and 850, and most preferably between 675 and 800) and (2)...
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8016984 |
Ion-permeable diaphragm
An ion-permeable diaphragm comprises a membrane material containing a calcium phosphate compound or calcium fluoride as a hydrophilic inorganic material. The calcium phosphate compound is...
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7993499 |
Membrane electrode unit for the electrolysis of water
The invention relates to membrane-electrode assemblies for the electrolysis of water (electrolysis MEAs), which contain an ion-conducting membrane having a front and rear side; a first catalyst...
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7972491 |
Method for imparting hydrogen resistance to articles
A simple and low cost method for imparting excellent hydrogen resistance to various types of articles such as a rare earth metal-based permanent magnet. A method for imparting hydrogen resistance...
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7938941 |
Cation-exchange fluorinated membrane for electrolysis and process for producing the same
A cation-exchange membrane for electrolysis which comprises a fluoropolymer having ion-exchange groups and a porous base. It is characterized by having, on the anode-side surface of the membrane,...
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7851557 |
Organic/inorganic composite electrolyte membranes using zeolite and fuel cell comprising the same
Disclosed is an organic/inorganic composite electrolyte membrane comprising: (a) a sulfonated fluorine-free hydrocarbon-based polymer; and (b) inorganic particles capable of collecting moisture,...
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7850832 |
Porous non-asbestos separator and method of making same
The present invention relates to an inert, non-asbestos separator and method of making same, the separator comprising an inorganic/polymer fibrid and agglomeration composite material containing...
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7849581 |
Nanopore electrode, nanopore membrane, methods of preparation and surface modification, and use thereof
Provided are fabrication, characterization and application of a nanodisk electrode, a nanopore electrode and a nanopore membrane. These three nanostructures share common fabrication steps. In one...
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7838138 |
Fuel cell electrolyte membrane with basic polymer
The present invention is an electrolyte membrane comprising an acid and a basic polymer, where the acid is a low-volatile acid that is fluorinated and is either oligomeric or non-polymeric, and...
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7820314 |
Proton-conducting membrane and use thereof
The present invention relates to a novel proton-conducting polymer membrane based on polyazole block polymers which, owing to their outstanding chemical and thermal properties, can be used widely...
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7799452 |
Solid polymer electrolyte membrane and production method of the same
An object is to provide a solid polymer electrolyte membrane for solid polymer electrolyte fuel cell, which has high durability, as well as a membrane electrode assembly and a solid polymer...
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7790323 |
Polymer electrolyte, half-cell for electrochemical measurements, as well as the use thereof
A polymer electrolyte for an electrochemical half-cell, such as a reference half-cell, contains a polymer which can be produced by polymerization of N-acryloyl-amino-ethoxy-ethanol or by...
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7749629 |
Electrolyte membrane, process for its production and polymer electrolyte fuel cell
An electrolyte membrane characterized by comprising a porous body formed from a melt-moldable fluororesin and having interconnected pores and an ion exchange resin with which the interconnected...
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7713449 |
Polymer electrolytic material, polymer electrolytic part, membrane electrode assembly, and polymer electrolyte fuel cell
A polymer electrolytic material has excellent proton conductivity and excellent fuel shutting property, and accordingly provide a polymer electrolytic fuel cell with a high efficiency. This polymer...
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7699964 |
Membrane suitable for use in an analyte sensor, analyte sensor, and associated method
A multifunctional membrane is provided. The multifunctional membrane is suitable for use in an analyte sensor. In a particular application, the multifunctional membrane may be used in connection...
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7661542 |
Proton-conducting polymer membrane that contains polyazoles and is coated with a catalyst layer, and application therof in fuel cells
The present invention relates to a proton-conducting polymer membrane which comprises polyazoles and is coated with a catalyst layer and is obtainable by a process comprising the steps A)...
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7591964 |
Electrochemical devices comprising proton conducting mediums
An electrochemical device and a proton conducting medium for use in an electrochemical device having a proton conducting electrolyte comprising the formula: HaMbQ.nH2O where H is a proton, M is a...
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7588796 |
Method of making a composite membrane
A method of making a composite membrane with ion exchange properties includes, in an exemplary embodiment, forming a porous membrane from a first material, dissolving a coating material in a fluid...
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7557164 |
Membranes of fluorinated ionomer blended with nonionomeric fluoropolymers for electrochemical cells
Blends of fluorinated ionomer with at least two nonionomeric fluoropolymers provide fuel cell membranes whose tensile strength and conductivity are superior to blends using a single fluoropolymer.
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7553403 |
Reversible electrochemical sensors for polyions
The present invention is directed to a reversible electrochemical sensor for polyions. The sensor uses active extraction and ion stripping, which are controlled electrochemically. Spontaneous...
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7540984 |
Proton-conducting membrane and the use thereof
The present invention relates to a novel proton-conducting polymer membrane based on polyazoles which can, because of its excellent chemical and thermal properties, be used in a variety of ways and...
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7527887 |
Structures of the proton exchange membranes with different molecular permeabilities
The invention relates to the structures of proton exchange membranes with different molecular permeabilities, especially to the proton exchange membranes suitable for the applications in Direct...
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7504174 |
Unitized membrane electrode assembly and process for its preparation
The invention provides a unitized membrane electrode assembly having a first gas diffusion backing having sealing edges; a polymer membrane; a second gas diffusion backing having sealing edges; a...
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7329332 |
Diaphragm for electrolytic cell
Describes a cathode assembly for electrolytic cells, e.g., chlor-alkali electrolytic cells, comprising a foraminous cathode substrate, a deposited erodible mat comprising synthetic (man-made)...
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7318972 |
Hydrophilic polymers and their use in electrochemical cells
A hydrophilic cross-linked polymer obtainable by copolymerization of hydrophobic and hydrophilic monomers that give a cross-linked hydrophilic polymer on polymerization; a monomer including a...
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7255779 |
Indolecarboxylic ester trimer and electrochemical cell using the same
The present invention provides a novel indole carboxylic ester trimer which is characterized by being represented by the following general formula (1): wherein R represents a straight or branched...
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7241367 |
Permeable membrane diaphragm of different layers for electroytic cells
The present invention relates to a permeable membrane diaphragm of different layers for electrolytic cell, especially for chloro-alkali electrolytic cell. The diaphragm is asymmetric, which...
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7144652 |
Membrane-electrode assembly for polymeric membrane fuel cell
The invention is relative to a membrane-electrode assembly for fuel cells, comprising a state of the art ion-exchange polymeric membrane and state of the art gas diffusion electrodes, whose...
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7128993 |
Composite membrane
The present invention relates to a composite membrane comprising at least one ion-conducting polymer and a network of randomly orientated individual fibers, wherein there is a continuous region of...
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7094851 |
Low equivalent weight ionomer
An ionomer and a process for forming the ionomer such that the ionomer has (1) low equivalent weight (below 950, preferably between 625 and 850, and most preferably between 675 and 800) and (2)...
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7094490 |
Ion conductive block copolymers
This invention relates to ion conductive copolymers which are useful in forming polymer electrolyte membranes used in fuel cells.
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7045044 |
Dispersion composition containing perfluorocarbon-based copolymer
A dispersion composition comprising 100 parts by weight of a specific perfluorocarbon-based copolymer containing functional groups and 10 to 10,000 parts by weight of a specific liquid...
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7029559 |
Proton exchange composite membranes, composite solutions, and method for manufacturing and fuel cell using the same
An ion exchange composition membrane is made up of dispersed natural clay and/or organized clay in ion conducting polymeric film as a methanol barrier material. The membrane exhibits low methanol...
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7014947 |
Integral membrane support and frame structure
An electrochemical cell includes a first electrode, a second electrode, and a proton exchange membrane disposed between and in intimate contact with the electrodes. The proton exchange membrane is...
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7011905 |
Solid polymer electrolyte membrane, solid polymer electrolyte fuel cell using the membrane and method of fabricating the same
A solid polymer electrolyte membrane and a catalytic layer are properly assembled even when the solid polymer electrolyte membrane and an ion exchange resin in the catalytic layer are formed of...
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7008971 |
Composite polymer electrolytes for proton exchange membrane fuel cells
Thin films of inexpensive composite polymer electrolyte membranes containing inorganic cation exchange materials including various clay based fillers are fabricated by solution casting. The...
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6984669 |
Fluorinated cation exchange membrane and electrolytic soda process
The present invention provides a fluorinated cation exchange membrane comprising at least two layers, a first layer made of a fluoropolymer having sulfonic acid groups and a second layer made of a...
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6939646 |
Polymer electrolyte and process for producing the same
A polymer electrolyte having, in a main chain, a structural unit represented by the following formula (1): —[Ar1—(SO2—N−(X+)—SO2—Ar2)m—SO2—N−(X+)—S
O2—Ar1—O]— (1) wherein Ar1 and Ar2 independently...
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6924318 |
Method for making a bipolar membrane and use of resulting bipolar membrane
A process for producing a bipolar membrane is described in which a cationic membrane undergoes a treatment with a salt from a group 8 metal, an anionic membrane undergoes a treatment with a salt of...
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6875331 |
Anode isolation by diffusion differentials
Embodiments of the invention generally provide an electrochemical plating cell having a cell body configured to contain a plating solution therein. An anode assembly is immersed in a fluid solution...
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6872286 |
Water electrolysis cell
A water electrolyte cell can be used with a high energy efficiency over a long period of time. The water electrolyte cell has a pair of catalytic layers and an electrolyte membrane sandwiched...
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6872287 |
Electrochemical cell
The invention is an electrochemical cell for the separation of hydrogen and oxygen from water made of a fuel plenum with a fuel inlet, a oxidant plenum, a porous substrate, an undulating channel...
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6830849 |
High crystalline polypropylene microporous membrane, multi-component microporous membrane and methods for preparing the same
The present invention relates to a high crystalline polypropylene microporous membrane and a preparation method of the same, and it provides a preparation method of a polypropylene microporous...
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6830671 |
Ion-exchange membrane
An ion-exchange membrane having excellent resistance against organic fouling by high molecular weight organic ions etc. and showing low electric resistance is provided. Said ion-exchange membrane...
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6803143 |
Gas diffusion structures and gas diffusion electrodes for polymer electrolyte fuel cells
A gas diffusion structure for polymer electrolyte fuel cells having a sheet-like carbon substrate made hydrophobic and having two main opposing surfaces and a contact layer on one of these...
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6790553 |
Method for producing bridged polymer membrane and fuel cell
A method for producing a bridged polymer membrane includes the steps of: obtaining a liquid medium comprising a basic polymer having an amino group in a repeating unit, a bridging agent, and a...
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6770187 |
Method for electrochemically producing an alkali metal from an aqueous solution
The invention relates to an electrolysis cell comprising an anode compartment which comprises an aqueous solution of at least one alkali metal salt, a cathode compartment and a solid electrolyte...
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6737158 |
Porous polymeric membrane toughened composites
Composites comprising porous polymeric membrane films meeting the following equation: 75 MPa<(longitudinal membrane tensile modulus+transverse membrane tensile modulus)/2, wherein at least a...
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