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    • 2. 发明申请
    • Electrode catalyst for fuel cell
    • 燃料电池用电极催化剂
    • US20060134506A1
    • 2006-06-22
    • US11302389
    • 2005-12-14
    • Min KimJin ParkHyuk Kim
    • Min KimJin ParkHyuk Kim
    • H01M4/92H01M4/96H01M4/88
    • H01M4/8825H01M4/8828H01M4/921H01M4/925H01M4/926H01M2008/1095Y02E60/50
    • Disclosed is an electrode catalyst comprising: (a) a support with a specific surface area of at least 1200 m2/g; and (b) platinum or platinum-containing alloy particles on the support, wherein the platinum is supported on the electrode catalyst in an amount of 56˜90 wt % based on the total weight of the electrode catalyst. A membrane electrode assembly (MEA) comprising the electrode catalyst and a fuel cell using the MEA are also disclosed. The electrode catalyst comprises platinum or platinum-containing alloy particles highly dispersed on a support with a large surface area in an amount of 56 wt % or more, and thus has an extended catalytically active region, resulting in improvement in the quality of a fuel cell.
    • 公开了一种电极催化剂,其包括:(a)比表面积为至少1200m 2 / g的载体; 和(b)载体上的铂或含铂合金颗粒,其中基于电极催化剂的总重量,铂以负载在电极催化剂上的量为56〜90重量%。 还公开了包括电极催化剂和使用MEA的燃料电池的膜电极组件(MEA)。 电极催化剂包含高度分散在具有56重量%以上的大表面积的载体上的含铂或含铂合金颗粒,因此具有延伸的催化活性区域,从而提高了燃料电池的质量 。
    • 3. 发明申请
    • Electrode catalyst with improved longevity properties and fuel cell using the same
    • 具有改善寿命性能的电极催化剂和使用其的燃料电池
    • US20070248862A1
    • 2007-10-25
    • US11488175
    • 2006-07-18
    • Byungwoo ParkChunjoong KimMyunggoo KangJin ParkHyuk KimMin Kim
    • Byungwoo ParkChunjoong KimMyunggoo KangJin ParkHyuk KimMin Kim
    • H01M8/10
    • H01M4/9083H01M4/8605H01M4/8828H01M4/921H01M4/925Y02E60/50Y10T29/49108
    • Disclosed is an electrode catalyst comprising: (a) a support; (b) metal catalyst particles supported on the support and formed of a catalytically active metal or metal-containing alloy; and (c) an anti-coarsening compound, which is dispersed in at least one region selected from the group consisting of interstitial spaces among the catalyst particles and contact sites between the support and the catalyst particles, and has a coarsening temperature higher than that of the catalyst. A method for preparing the electrode catalyst is also disclosed. Additionally, disclosed is a method for preventing metal catalyst particles supported on a support and formed of a catalytically active metal or metal-containing alloy from coarsening, the method comprising: dispersing an anti-coarsening compound having a coarsening temperature higher than that of the metal catalyst, in at least one region selected from the group consisting of interstitial spaces among the metal catalyst particles and contact sites between the support and the metal catalyst particles. The electrode catalyst is structurally stable while not causing degradation of electrochemical quality, and thus can improve the longevity properties of a fuel cell.
    • 公开了一种电极催化剂,包括:(a)载体; (b)负载在载体上并由催化活性金属或含金属的合金形成的金属催化剂颗粒; 和(c)分散在选自催化剂颗粒间的间隙和载体与催化剂颗粒之间的接触位置的至少一个区域中的抗粗化化合物,其粗化温度高于 催化剂。 还公开了一种制备电极催化剂的方法。 此外,公开了一种防止金属催化剂颗粒负载在由催化活性金属或含金属的合金中粗大化形成的方法,该方法包括:将具有高于金属的粗化温度的抗粗化化合物 催化剂,在选自金属催化剂颗粒之间的间隙和载体与金属催化剂颗粒之间的接触位置的至少一个区域中。 电极催化剂结构稳定,不会导致电化学质量的降低,从而可以改善燃料电池的寿命性能。