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公开(公告)号：US11302929B2
公开(公告)日：2022-04-12
申请号：US16091292
申请日：2017-08-25
发明人： Yuichi Senoo , Koichi Miyake , Koji Taniguchi , Hiromu Watanabe , Naohiko Abe , Tatsuya Arai
IPC分类号： H01M4/92 , H01M8/1039 , H01M8/10
摘要： Provided is a method with which it is possible to easily produce an electrode catalyst having excellent catalytic performance such as kinetically controlled current density. The method involves: a dispersion liquid preparation step of preparing a dispersion liquid by mixing (i) at least one type of solvent selected from the group consisting of sulfoxide compounds and amide compounds, (ii) a catalyst carrier powder constituted by a metal oxide, (iii) a platinum compound, (iv) a transition metal compound, and (v) an aromatic compound including a carboxyl group; and a loading step of heating the dispersion liquid to thereby load a platinum alloy of platinum and a transition metal on a surface of the catalyst carrier powder.
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2.发明申请公开(公告)号：US20150243999A1
公开(公告)日：2015-08-27
申请号：US14428717
申请日：2014-03-06
发明人： Seiichiro Takahashi , Naohiko Abe , Hiromu Watanabe , Susumu Takahashi , Koji Taniguchi , Akiko Sugimoto
CPC分类号： H01M4/8652 , C01G19/02 , C01G35/00 , C01P2002/54 , C01P2002/72 , C01P2002/74 , C01P2004/50 , C01P2004/61 , C01P2006/12 , C01P2006/40 , H01M4/9016 , H01M4/9075 , H01M8/1004 , H01M8/1018 , H01M2008/1095 , H01M2300/0082
摘要： A tantalum-containing tin oxide for a fuel cell electrode material, comprising tin oxide containing tantalum. The tantalum content is 0.001-30 mol %. When the tantalum-containing tin oxide is measured by x-ray diffraction, the value for [ITa205/ISnO2]DOPE is smaller than the value for [ITa205/ISnO2]MIX. In addition to the tin oxide particles containing tantalum, ideally a tantalum oxide is present on the surface of the particles. Also, ideally the tantalum oxide is crystalline.
摘要翻译： 一种用于燃料电池电极材料的含钽氧化锡，其包含含钽的氧化锡。 钽含量为0.001-30摩尔％。 当通过x射线衍射测量含钽氧化锡时，[ITa205 / ISnO2] DOPE的值小于[ITa205 / ISnO2] MIX的值。 除了含有钽的氧化锡颗粒之外，理想的是氧化钽存在于颗粒的表面上。 此外，理想的是氧化钽是结晶的。
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公开(公告)号：US11189841B2
公开(公告)日：2021-11-30
申请号：US16336129
申请日：2017-09-29
发明人： Yuichi Senoo , Koichi Miyake , Koji Taniguchi , Hiromu Watanabe , Naohiko Abe
摘要： This method for producing an electrode catalyst includes: a dispersion liquid preparation step wherein a dispersion liquid is prepared by mixing (i) at least one solvent selected from the group consisting of sulfoxide compounds and amide compounds, (ii) a catalyst carrier powder composed of a metal oxide, (iii) a platinum compound, (iv) a transition metal compound and (v) an aromatic compound that contains a carboxyl group; a loading step wherein the dispersion liquid is heated so that a platinum alloy of platinum and a transition metal is loaded on the surface of the catalyst carrier powder; a solid-liquid separation step wherein a dispersoid is separated from the dispersion liquid after the loading step, thereby obtaining a catalyst powder wherein the catalyst carrier powder is loaded with the platinum alloy; and a heat treatment step wherein the catalyst powder is heated under vacuum or in a reducing gas atmosphere.
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公开(公告)号：US11594737B2
公开(公告)日：2023-02-28
申请号：US16434031
申请日：2019-06-06
IPC分类号： H01M8/10 , H01M4/86 , H01M8/1004 , H01M4/90 , H01M4/92
摘要： A membrane-electrode assembly including a catalyst layer that includes a catalyst-supporting carrier in which a catalyst is supported on a carrier made of an inorganic oxide, and a highly hydrophobic substance having a higher degree of hydrophobicity than the inorganic oxide, the catalyst layer being formed on at least one surface of a polymer electrolyte membrane. It is preferable that, in the membrane-electrode assembly, the degree of hydrophobicity of the highly hydrophobic substance is from 0.5 vol % to 45 vol % at 25° C., the degree of hydrophobicity being defined as a concentration of methanol (vol %) when a light transmittance of a dispersion obtained by dispersing the highly hydrophobic substance in a mixed solution of water and methanol reaches 80%.
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公开(公告)号：US10355285B2
公开(公告)日：2019-07-16
申请号：US15300075
申请日：2015-03-05
IPC分类号： H01M8/10 , H01M4/86 , H01M8/1004 , H01M4/90 , H01M4/92 , H01M8/1018
摘要： A membrane-electrode assembly including a catalyst layer that includes a catalyst-supporting carrier in which a catalyst is supported on a carrier made of an inorganic oxide, and a highly hydrophobic substance having a higher degree of hydrophobicity than the inorganic oxide, the catalyst layer being formed on at least one surface of a polymer electrolyte membrane. It is preferable that, in the membrane-electrode assembly, the degree of hydrophobicity of the highly hydrophobic substance is from 0.5 vol % to 45 vol % at 25° C., the degree of hydrophobicity being defined as a concentration of methanol (vol %) when a light transmittance of a dispersion obtained by dispersing the highly hydrophobic substance in a mixed solution of water and methanol reaches 80%.
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