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7615307 |
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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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:
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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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7582210 |
Proton-conducting membrane and 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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7579102 |
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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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...
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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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7049020 |
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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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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7041409 |
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 about 700 and about 800;...
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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):
—[Ar 1 —(SO 2 —N − (X...
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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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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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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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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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6733638 |
Limited use components for an electrochemical device
The present invention provides an ozone generating system that combines single-use elements or segments with an extended use fixture that is used to activate the single-use elements. One embodiment...
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6730439 |
Heat-resistant separator
A heat-resistant separator composed of a non-woven fabric of high-melting resin, 1 to 20 μm in average fiber diameter, 5 to 300 g/m 2 in basis weight, 1 to 200 cc/cm 2 /sec in air permeability,...
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6685808 |
Electrochemical gas sensor with folded membrane strip
An electrochemical gas sensor is provided which can be assembled economically and in a few steps. The electrodes ( 1, 2, 3 ) with associated electric lines are applied in a planiform manner to a...
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6685806 |
Membrane electrode assembly and method of its production
Membrane-electrode assembly consisting of a cationic exchange membrane which contains fluorine (made of hydrolyzed copolymer of tetrafluoro-ethylene and vinyl ether which contains perfluorosulfur...
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6632561 |
Composites bodies used as separators in electrochemical cells
A composite comprises at least one layer which includes a composite comprising (a) from 1 to 99% by weight of a solid (I) with a primary particle size of from 5 nm to 100 μm or a mixture made...
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6630265 |
Composite electrolyte for fuel cells
An inexpensive composite electrolyte for use in electrochemical fuel cells includes (i) an inorganic cation exchange material, (i) a silica-based binder; and (ii) a polymer-based binder. The cation...
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6613203 |
Ion conducting membrane having high hardness and dimensional stability
An integral composite membrane comprised of an expanded polytetrafluoroethylene having a morphological structure comprising a microstructure of very highly elongated nodes interconnected by fibrils...
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6596137 |
Bipolar membrane
A bipolar membrane which exhibits a low water dissociation voltage for an extended period of time under a high current density condition, and a high current efficiency, without developing blister....
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6569301 |
Cation exchange membrane selectively permeable to monovalent cations and method for its production
The present invention provides a cation exchange membrane which has excellent durability, a high limiting current density, a low direct current membrane resistance and excellent selectivity to...
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6562446 |
Multi-layer polymer electrolyte-membrane, electrochemical apparatus and process for the preparation of multi-layer polymer electrolyte membrane
A multi-layer polymer electrolyte membrane having a polymer electrolyte layer and a porous polymer electrolyte layer with three dimensional network pores on the former polymer electrolyte layer is...
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6527920 |
Copper electroplating apparatus
An electroplating apparatus prevents anode-mediated degradation of electrolyte additives by creating a mechanism for maintaining separate anolyte and catholyte and preventing mixing thereof within...
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6425993 |
Membrane electrode assembly and method of its manufacture
A method is provided for making a membrane electrode that employs a composite membrane, which include both a porous membrane and an ion conducting electrolyte, by partially filling a porous...
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6417009 |
Reservoir components
A linker lipid for use in attaching a membrane including a plurality of ionophores to an electrode and providing a space between the membrane and the electrode in which the membrane is either in...
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