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:
[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:
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。
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。
摘要:
An apparatus for positioning inserts in a rotating receptacle. The apparatus includes a magazine for holding a plurality of inserts. An insertion arm is provided for positioning inserts within the receptacle. The insertion arm has a first end and a second end, wherein the second end comprises an insert receiving structure. A first linear actuation device moves the insertion arm between a first linear position and a second linear position. In the first linear position, the insert receiving structure picks an insert from the magazine. A second linear actuation device is connected to the insert receiving structure. When the insertion arm is in the second position, the second linear actuation device causes the insert receiving structure to rotate from about 0° to about 90° to position the insert within the receptacle.