摘要:
The invention relates to novel organic/inorganic hybrid membranes which have the following composition: a polymer acid containing —SO3H, PO3H2, —COOH or B(OH)2 groups, a polymeric ease (optional), which contains primary, secondary or tertiary amino groups, pyridine groups, imidazole, benzimidazole, triazole, benzotriazole, pyrazole or benzopyrazole groups, either in the side chain or in the main chain; an additional polymeric base (optional) containing the aforementioned basic groups; an element or metal oxide or hydroxide, which has been obtained by hydrolysis and/or sol-gel reaction of an elementalorganic and/or metalorganic compound during the membrane forming process and/or by a re-treatment of the membrane in aqueous acidic, alkaline or neutral electrolytes. The invention also relates to methods for producing said membranes and to various uses for membranes of this type.
摘要:
A water insoluble additive for improving the performance of an ion-exchange membrane, such as in the context of the high temperature operation of electrochemical fuel cells. The insoluble additive comprises a metal oxide cross-linked matrix having proton conducting groups covalently attached to the matrix through linkers. In one embodiment, the metal is silicon and the cross-linked matrix is a siloxane cross-linked matrix containing silicon atoms cross-linked by multiple disiloxy bonds and having proton conducting groups covalently attached to the silicon atoms through alkanediyl linkers.
摘要:
A polysesquioxane composition, comprising (i) a polysesquioxane matrix comprising sesquioxane moieties comprising a metallic element; (ii) a hydrophilic component; and (iii) a proton-conducting component, is provided. The metallic element can be silicon, aluminum, titanium, zirconium, germanium, or a mixture of two or more thereof. The hydrophilic component can comprise an imidazole moiety, a pyrazole moiety, a benzimidazole moiety, a silanol moiety, a cyclodextrin, or two or more thereof, and the hydrophilic component can be covalently bonded to the polysesquioxane matrix. The proton-conducting component can comprise an inorganic Brønsted acid moiety. The polysesquioxane composition can be used as a proton exchange membrane in a fuel cell; as a component of a membrane electrode assembly; or as a sensor assembly in a potentiometric sensor.
摘要:
The invention relates to novel organic/inorganic hybrid membranes which have the following composition: a polymer acid containing —SO3H, —PO3H2, —COOH or B(OH)2 groups, a polymeric base (optional), which contains primary, secondary or tertiary amino groups, pyridine groups, imidazole, benzimidazole, triazole, benzotriazole, pyrazole or benzopyrazole groups, either in the side chain or in the main chain; an additional polymeric base (optional) containing the aforementioned basic groups; an element or metal oxide or hydroxide, which has been obtained by hydrolysis and/or sol-gel reaction of an elementalorganic and/or metalorganic compound during the membrane forming process and/or by a re-treatment of the membrane in aqueous acidic, alkaline or neutral electrolytes. The invention also relates to methods for producing said membranes and to various uses for membranes of this type.
摘要:
The present invention provides relates to a crosslinkable, proton-conducting membrane having a crosslinked structure, excellent in heat resistance, durability, dimensional stability and fuel barrier characteristics, and showing excellent proton conductivity at high temperature, characterized by comprising (a) an organic/inorganic hybrid structure (A) covalently bonded to 2 or more silicon-oxygen crosslinks and, at the same time, having a carbon atom, and (b) an acid containing structure (B) having an acid group, covalently bonded to a silicon-oxygen crosslink and having an acidic group; and provides a fuel cell using the same membrane. The present invention also provides a method for producing the proton-conducting membrane, comprising steps of preparing a mixture containing an organic/inorganic hybrid, crosslinkable compound (C) and compound (D), the former having 2 or more crosslinkable silyl groups and carbon atoms each being bonded to the silyl group via the covalent bond and the latter having a crosslinkable silyl group and acid group, as the first step; forming the above mixture into a film as the second step; and hydrolyzing/condensing or only condensing the hydrolyzable silyl group contained in the mixture formed into the film to form a crosslinked structure as the third step.
摘要:
The invention relates to an ion-conductive polymer membrane for a fuel cell, whereby the polymer membrane is configured from a polymer-forming hydrocarbon material and to a method for producing the same. The membrane also has a metal-containing gel which has been hydrolysed and/or condensed from a metal alkoxide starting material and which is deposited in the polymer and/or is chemically bonded to the polymer. The proportion of metal alkoxide by weight, in relation to the membrane, lies between 25% and 1%.
摘要:
A polysesquioxane composition, comprising (i) a polysesquioxane matrix comprising sesquioxane moieties comprising a metallic element; (ii) a hydrophilic component; and (iii) a proton-conducting component, is provided. The metallic element can be silicon, aluminum, titanium, zirconium, germanium, or a mixture of two or more thereof. The hydrophilic component can comprise an imidazole moiety, a pyrazole moiety, a benzimidazole moiety, a silanol moiety, a cyclodextrin, or two or more thereof, and the hydrophilic component can be covalently bonded to the polysesquioxane matrix. The proton-conducting component can comprise an inorganic Brønsted acid moiety. The polysesquioxane composition can be used as a proton exchange membrane in a fuel cell; as a component of a membrane electrode assembly; or as a sensor assembly in a potentiometric sensor.
摘要:
The invention relates to a miniature fuel cell powered by a hydrocarbon fuel making heavy use of micro-technologies in making and assembling the sub-assemblies of the cell. Relative to the prior art, the main innovation consists in using a semiconductor oxidised and made porous in predetermined areas, to receive an electrolytic polymer allowing the composition of the proton exchange membrane necessary for the fuel cell to operate.
摘要:
Flexible proton electrolyte membranes, fuel cells, and methods for making membranes are disclosed. One exemplary membrane, among others, includes a flexible proton electrolyte membrane having the characteristic of a proton conductivity of about 1null10null6 to 1null10null1 S/cm at a temperature range of about 30null C. to about 180null C. and a relative humidity of about 0% to 100%.
摘要翻译:公开了柔性质子电解质膜,燃料电池和制造膜的方法。 一个示例性的膜包括在大约30℃至大约180℃的温度范围内具有约1×10 -6至1×10 -3 S / cm的质子传导性的柔性质子电解质膜 并且相对湿度为约0%至100%。
摘要:
The invention relates to organic/inorganic hybrid polymer blends and hybrid polymer blend membranes that are composed of: one polymer acid halide containing SO2X, POX2 or COX groups (XnullF, Cl, Br, I); one elemental or metallic oxide or hydroxide, obtained by the hydrolysis and/or the sol/gel reaction of an elemental and/or organometallic compound during the membrane forming process and/or by subsequently treating the membrane in aqueous acidic, alkaline or neutral electrolytes. The invention further relates to hybrid blends and hybrid blend membranes containing polymers that carry SO3H, PO3H2 and/or COOH groups, obtained by aqueous, alkaline or acidic hydrolysis of the polymer acid halides contained in the polymer blend or the polymer blend membrane. The invention also relates to methods for producing the inventive hybrid blends and hybrid blend membranes.