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    • 3. 发明申请
    • TITANIUM ELECTRODE MATERIAL
    • 钛电极材料
    • US20100119882A1
    • 2010-05-13
    • US11995937
    • 2006-07-26
    • Jun SuzukiToshiki SatoKasumi YanagisawaTakashi YashikiMasahito Fukuda
    • Jun SuzukiToshiki SatoKasumi YanagisawaTakashi YashikiMasahito Fukuda
    • H01M2/16
    • H01M8/0208C22C14/00C22C21/06C22C29/12C22C32/0021H01M8/0228
    • A titanium material for an electrode comprising a titanium alloy substrate containing at least one noble metal element selected from platinum group elements, Au and Ag; and a layer of a mixture formed on the titanium alloy substrate, said mixture comprising the noble metal element precipitated from the titanium alloy substrate and titanium oxide, and said layer having an average thickness of up to 200 nm; wherein the mixture layer on the surface and the titanium alloy substrate have a conductivity in terms of contact resistance as determined by the following method of up to 12 mΩ·cm2. The contact resistance is determined by placing a carbon cloth having an average thickness of 0.3 mm on opposite surfaces of the titanium alloy substrate having the mixture layer formed thereon; sandwiching the titanium alloy material with a pair of copper electrodes via the carbon cloth, the copper electrodes each having a contact area with the titanium alloy material of 1 cm2; measuring voltage drop between the carbon cloths by using a four terminal ohmmeter while pressing the copper electrodes against the titanium alloy material at a surface pressure of 5 kg/cm2 by using a hydraulic press and applying an electric current of 7.4 mA between the copper electrodes; and calculating the contact resistance from the measured value.
    • 一种用于电极的钛材料,包括含有至少一种选自铂族元素Au和Ag的贵金属元素的钛合金基底; 以及形成在钛合金基板上的混合物层,所述混合物包含从钛合金基板沉淀的贵金属元素和氧化钛,所述层的平均厚度高达200nm; 其中表面上的混合物层和钛合金基底具有通过以下方法测定的接触电阻方面的导电率,其高达12mΩ·cm 2·cm 2。 通过将平均厚度为0.3mm的碳布放置在其上形成有混合层的钛合金基板的相对表面上来确定接触电阻; 通过碳布将钛合金材料与一对铜电极夹住,每个与钛合金材料的接触面积为1cm 2的铜电极; 使用四端欧姆计测量碳布之间的电压降,同时使用液压机在铜电极之间施加7.4mA的电流,将铜电极以5kg / cm2的表面压力压在钛合金材料上; 并根据测量值计算接触电阻。
    • 5. 发明授权
    • Titanium material for fuel cell separator having low contact resistance
    • 用于燃料电池隔板的钛材料具有低接触电阻
    • US08137866B2
    • 2012-03-20
    • US11995937
    • 2006-07-26
    • Jun SuzukiToshiki SatoKasumi YanagisawaTakashi YashikiMasahito Fukuda
    • Jun SuzukiToshiki SatoKasumi YanagisawaTakashi YashikiMasahito Fukuda
    • H01M4/66H01M4/64
    • H01M8/0208C22C14/00C22C21/06C22C29/12C22C32/0021H01M8/0228
    • A separator for a fuel cell comprising a titanium alloy substrate containing at least one noble metal element selected from platinum group elements, Au and Ag; and a layer of a mixture formed on the titanium alloy substrate, said mixture comprising the noble metal element precipitated from the titanium alloy substrate and titanium oxide, and said layer having an average thickness of up to 200 nm; wherein the mixture layer on the surface and the titanium alloy substrate have a conductivity in terms of contact resistance as determined by the following method of up to 12 mΩ·cm2. The contact resistance is determined by placing a carbon cloth having an average thickness of 0.3 mm on opposite surfaces of the titanium alloy substrate having the mixture layer formed thereon; sandwiching the titanium alloy material with a pair of copper electrodes via the carbon cloth, the copper electrodes each having a contact area with the titanium alloy material of 1 cm2; measuring voltage drop between the carbon cloths by using a four terminal ohmmeter while pressing the copper electrodes against the titanium alloy material at a surface pressure of 5 kg/cm2 by using a hydraulic press and applying an electric current of 7.4 mA between the copper electrodes; and calculating the contact resistance from the measured value.
    • 一种用于燃料电池的隔板,包括含有至少一种选自铂族元素Au和Ag的贵金属元素的钛合金基底; 以及形成在钛合金基板上的混合物层,所述混合物包含从钛合金基板沉淀的贵金属元素和氧化钛,所述层的平均厚度高达200nm; 其中表面上的混合物层和钛合金基底具有通过以下方法测定的接触电阻方面的导电率,其高达12mΩ·cm 2·cm 2。 通过将平均厚度为0.3mm的碳布放置在其上形成有混合层的钛合金基板的相对表面上来确定接触电阻; 通过碳布将钛合金材料与一对铜电极夹住,每个与钛合金材料的接触面积为1cm 2的铜电极; 使用四端欧姆计测量碳布之间的电压降,同时使用液压机在铜电极之间施加7.4mA的电流,将铜电极以5kg / cm2的表面压力压在钛合金材料上; 并根据测量值计算接触电阻。