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    Corrosion resistant metal oxide electrode catalyst for oxygen reduction
    1.
    发明授权
    Corrosion resistant metal oxide electrode catalyst for oxygen reduction 有权
    用于氧还原的耐腐蚀金属氧化物电极催化剂

    公开(公告)号：US07919215B2

    公开(公告)日：2011-04-05

    申请号：US11660602

    申请日：2005-08-18

    申请人： Kenichiro Ota ,  Nobuyuki Kamiya ,  Shigenori Mitsushima ,  Akimitsu Ishihara ,  Liu Yan

    发明人： Kenichiro Ota ,  Nobuyuki Kamiya ,  Shigenori Mitsushima ,  Akimitsu Ishihara ,  Liu Yan

    IPC分类号： H01M4/02

    CPC分类号： H01M4/9016 ,  H01M4/8605 ,  H01M8/1007

    摘要： A corrosion-resistant electrode catalyst for oxygen reduction includes a main catalyst composed of at least one transition metal oxide selected from oxygen-deficient ZrO2, Ta2O5, Nb2O5, TiO2, V2O5, MoO3, and WO3 and a co-catalyst composed of gold. The electrode catalyst is used in contact with an acidic electrolyte at a potential at least 0.4 V higher than the reversible hydrogen electrode potential. The catalyst may be used, for example, in such a form that the transition metal oxide in the form of fine particles and gold in the form of fine particles, or fine particles including fine gold particles coated with the transition metal oxide are dispersed on a catalyst carrier which is an electron conductive powder. This electrode catalyst is suitable as an electrode catalyst for an electrochemical system using an acidic electrolyte in the fields of water electrolysis, inorganic/organic electrolysis, fuel cells, etc.

    摘要翻译： 用于氧还原的耐腐蚀电极催化剂包括由至少一种选自缺氧的ZrO 2，Ta 2 O 5，Nb 2 O 5，TiO 2，V 2 O 5，MoO 3和WO 3的过渡金属氧化物和由金组成的助催化剂构成的主催化剂。 使用电极催化剂与酸性电解质接触，电位比可逆氢电极电位高至少0.4V的电位。 催化剂可以使用例如以细颗粒形式的细颗粒形式的金属过渡金属氧化物或包含过渡金属氧化物涂覆的金颗粒的细颗粒分散在 作为电子传导性粉末的催化剂载体。 该电极催化剂适用于在水电解，无机/有机电解，燃料电池等领域中使用酸性电解质的电化学系统的电极催化剂。

    Metal Oxide Electrode Catalyst
    2.
    发明申请
    Metal Oxide Electrode Catalyst 有权
    金属氧化物电极催化剂

    公开(公告)号：US20070259267A1

    公开(公告)日：2007-11-08

    申请号：US11660602

    申请日：2005-08-18

    申请人： Kenichiro Ota ,  Nobuyuki Kamiya ,  Shigenori Mitsushima ,  Akimitsu Ishihara ,  Liu Yan

    发明人： Kenichiro Ota ,  Nobuyuki Kamiya ,  Shigenori Mitsushima ,  Akimitsu Ishihara ,  Liu Yan

    IPC分类号： H01M4/58

    CPC分类号： H01M4/9016 ,  H01M4/8605 ,  H01M8/1007

    摘要： A corrosion-resistant electrode catalyst for oxygen reduction includes a main catalyst composed of at least one transition metal oxide selected from oxygen-deficient ZrO2, Ta2O5, Nb2O5, TiO2, V2O5, MoO3, and WO3 and a co-catalyst composed of gold. The electrode catalyst is used in contact with an acidic electrolyte at a potential at least 0.4 V higher than the reversible hydrogen electrode potential. The catalyst may be used, for example, in such a form that the transition metal oxide in the form of fine particles and gold in the form of fine particles, or fine particles including fine gold particles coated with the transition metal oxide are dispersed on a catalyst carrier which is an electron conductive powder. This electrode catalyst is suitable as an electrode catalyst for an electrochemical system using an acidic electrolyte in the fields of water electrolysis, inorganic/organic electrolysis, fuel cells, etc.

    摘要翻译： 用于氧还原的耐腐蚀电极催化剂包括由至少一种选自缺氧的ZrO 2，Ta 2 O 5的过渡金属氧化物组成的主催化剂 Nb 2 O 5，TiO 2，V 2 O 5，N 2 O 5， N 3，MoO 3 3和WO 3以及由金组成的助催化剂。 使用电极催化剂与酸性电解质接触，电位比可逆氢电极电位高至少0.4V的电位。 催化剂可以例如以细颗粒形式的细小颗粒形式的金属过渡金属氧化物或包含过渡金属氧化物涂覆的细金颗粒的细颗粒分散在 作为电子传导性粉末的催化剂载体。 该电极催化剂适用于在水电解，无机/有机电解，燃料电池等领域中使用酸性电解质的电化学系统的电极催化剂。

    Metal oxynitride electrode catalyst
    3.
    发明授权
    Metal oxynitride electrode catalyst 有权
    金属氮氧化物电极催化剂

    公开(公告)号：US07670712B2

    公开(公告)日：2010-03-02

    申请号：US10581210

    申请日：2004-11-30

    申请人： Kenichiro Ota ,  Nobuyuki Kamiya ,  Shigenori Mitsushima ,  Akimitsu Ishihara ,  Kazunari Doumen ,  Michikazu Hara

    发明人： Kenichiro Ota ,  Nobuyuki Kamiya ,  Shigenori Mitsushima ,  Akimitsu Ishihara ,  Kazunari Doumen ,  Michikazu Hara

    IPC分类号： H01M4/90

    CPC分类号： H01M4/90 ,  B01J27/24 ,  H01M4/9016 ,  H01M8/086

    摘要： An electrode catalyst that maintains catalytic activity under conditions of an electrode potential as high as 0.4 V or above and exhibits improved stability. The metal oxynitride electrode catalyst is composed of an oxynitride containing at least one transition metal element selected from the group consisting of La, Ta, Nb, Ti, and Zr, the metal oxynitride electrode catalyst being used at a potential of 0.4 V or higher relative to the reversible hydrogen electrode potential in an acidic electrolyte. The metal oxynitride electrode catalyst is useful as an electrode catalyst for electrochemical systems used in acidic electrolytes in the fields of water electrolysis, organic electrolysis, fuel cells, etc.

    摘要翻译： 一种电极催化剂，其在电极电位高达0.4V或更高的条件下保持催化活性并表现出改进的稳定性。 金属氧氮化物电极催化剂由含有选自La，Ta，Nb，Ti和Zr中的至少一种过渡金属元素的氧氮化物组成，金属氧氮化物电极催化剂以0.4V或更高的电位使用 到酸性电解质中的可逆氢电极电位。 金属氮氧化物电极催化剂可用作在水电解，有机电解，燃料电池等领域中用于酸性电解质的电化学体系的电极催化剂。

    Metal oxynitride electrode catalyst
    4.
    发明申请
    Metal oxynitride electrode catalyst 有权
    金属氮氧化物电极催化剂

    公开(公告)号：US20070128884A1

    公开(公告)日：2007-06-07

    申请号：US10581210

    申请日：2004-11-30

    申请人： Kenichiro Ota ,  Nobuyuki Kamiya ,  Shigenori Mitsushima ,  Akimitsu Ishihara ,  Kazunari Doumen ,  Michikazu Hara

    发明人： Kenichiro Ota ,  Nobuyuki Kamiya ,  Shigenori Mitsushima ,  Akimitsu Ishihara ,  Kazunari Doumen ,  Michikazu Hara

    IPC分类号： H01L21/31

    CPC分类号： H01M4/90 ,  B01J27/24 ,  H01M4/9016 ,  H01M8/086

    摘要： [Problems] Carbides and many other non-platinum-based compounds are activated and dissolved and cannot be stably present in an acidic electrolyte under conditions of an electrode potential as high as 0.4 V or above, and thus, the application range of these compounds as an electrode catalyst is limited to low electrode potentials. There has been need for development of an electrode catalyst that maintains catalytic activity under these conditions and exhibits improved stability. [Means for Solving Problems] To provide a metal oxynitride electrode catalyst composed of an oxynitride containing at least one transition metal element selected from the group consisting of La, Ta, Nb, Ti, and Zr, the metal oxynitride electrode catalyst being used at a potential of 0.4 V or higher relative to the reversible hydrogen electrode potential in an acidic electrolyte. The metal oxynitride electrode catalyst is useful as an electrode catalyst for electrochemical systems used in acidic electrolytes in the fields of water electrolysis, organic electrolysis, fuel cells, etc.

    摘要翻译： [问题]硬质合金和许多其它非铂类化合物被活化和溶解，并且在电极电位高达0.4V或更高的条件下不能稳定地存在于酸性电解质中，因此这些化合物的应用范围为 电极催化剂限于低电极电位。 需要开发在这些条件下保持催化活性的电极催化剂，并表现出改进的稳定性。 解决问题的手段为了提供一种由含有选自La，Ta，Nb，Ti和Zr中的至少一种过渡金属元素的氧氮化物构成的金属氧氮化物电极催化剂，所述金属氧氮化物电极催化剂用于 相对于酸性电解质中的可逆氢电极电位，电位为0.4V以上。 金属氮氧化物电极催化剂可用作在水电解，有机电解，燃料电池等领域中用于酸性电解质的电化学体系的电极催化剂。