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    Synthesis of stable and durable catalyst composition for fuel cell
    8.
    发明授权
    Synthesis of stable and durable catalyst composition for fuel cell 有权
    燃料电池稳定耐用的催化剂组合物的合成

    公开(公告)号：US08722284B2

    公开(公告)日：2014-05-13

    申请号：US13499068

    申请日：2010-09-30

    Applicant: Stephen A. Campbell ,  Natalia Kremliakova

    Inventor： Stephen A. Campbell ,  Natalia Kremliakova

    IPC: H01M4/04

    CPC classification number: B01J23/6484 ,  B01J23/6486 ,  H01M4/921 ,  H01M4/923 ,  H01M2008/1095

    Abstract: Provided is a catalyst composition comprising an intermetallic phase comprising Pt and a metal selected from either Nb or Ta, and a dioxide of the metal. Also provided is a low temperature method for making such compositions that results in the formation of intermetallic phase with small crystallite size and thus greater mass activity. In particular, a Pt3Nb—NbO2 catalyst composition can be prepared that is useful as a fuel cell catalyst and offers a very stable chemical substrate along with good electrode activity and remarkable durability. The use of Pt3Nb—NbO2 can considerably prolong fuel cell lifetime by reducing Pt dissolution levels and subsequent voltage losses. The Pt3Nb—NbO2 can be used in the cathode and/or anode of a fuel cell.

    Abstract translation: 提供了一种催化剂组合物，其包含金属间相，其包含Pt和选自Nb或Ta的金属和金属的二氧化物。 还提供了一种用于制备这种组合物的低温方法，其导致形成具有小微晶尺寸的金属间相，从而导致更大的质量活性。 特别地，可以制备可用作燃料电池催化剂的Pt3Nb-NbO2催化剂组合物，并提供非常稳定的化学底物以及良好的电极活性和显着的耐久性。 Pt3Nb-NbO2的使用可以通过降低Pt溶解水平和随后的电压损耗来大大延长燃料电池寿命。 Pt3Nb-NbO2可用于燃料电池的阴极和/或阳极。

    NON-NOBLE METAL BASED ELECTRO-CATALYST COMPOSITIONS FOR PROTON EXCHANGE MEMBRANE BASED WATER ELECTROLYSIS AND METHODS OF MAKING
    9.
    发明申请
    NON-NOBLE METAL BASED ELECTRO-CATALYST COMPOSITIONS FOR PROTON EXCHANGE MEMBRANE BASED WATER ELECTROLYSIS AND METHODS OF MAKING 有权
    基于非导电金属的电催化剂组合物，用于基于原子交换膜的水电解和制备方法

    公开(公告)号：US20140045678A1

    公开(公告)日：2014-02-13

    申请号：US13961327

    申请日：2013-08-07

    Applicant: University of Pittsburgh - of the Commonwealth System of Higher Education

    Inventor： PRASHANT N. KUMTA ,  Karan Sandeep Kadakia ,  Moni Kanchan Datta ,  Oleg Velikokhatnyi

    IPC: B01J27/135 ,  B01J23/648 ,  B01J23/46

    CPC classification number: B01J27/135 ,  B01J23/468 ,  B01J23/6484 ,  B82Y30/00 ,  H01M4/881 ,  H01M4/8828 ,  H01M4/9016 ,  H01M4/9075 ,  Y02E60/50

    Abstract: The invention provides electro-catalyst compositions for an anode electrode of a proton exchange membrane-based water electrolysis system. The compositions include a noble metal component selected from the group consisting of iridium oxide, ruthenium oxide, rhenium oxide and mixtures thereof, and a non-noble metal component selected from the group consisting of tantalum oxide, tin oxide, niobium oxide, titanium oxide, tungsten oxide, molybdenum oxide, yttrium oxide, scandium oxide, cooper oxide, zirconium oxide, nickel oxide and mixtures thereof. Further, the non-noble metal component can include a dopant. The dopant can be at least one element selected from Groups III, V, VI and VII of the Periodic Table. The compositions can be prepared using a surfactant approach or a sol gel approach. Further, the compositions are prepared using noble metal and non-noble metal precursors. Furthermore, a thin film containing the compositions can be deposited onto a substrate to form the anode electrode.

    Abstract translation: 本发明提供用于质子交换膜基水电解系统的阳极电极的电催化剂组合物。 组合物包括选自氧化铱，氧化钌，氧化铼及其混合物的贵金属组分和选自氧化钽，氧化锡，氧化铌，氧化钛， 氧化钨，氧化钼，氧化钇，氧化钪，氧化钴，氧化锆，氧化镍及其混合物。 此外，非贵金属组分可以包括掺杂剂。 掺杂剂可以是选自元素周期表的III，V，VI和VII族中的至少一种元素。 组合物可以使用表面活性剂方法或溶胶凝胶法制备。 此外，使用贵金属和非贵金属前体制备组合物。 此外，可以将含有组合物的薄膜沉积在基板上以形成阳极电极。

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