Abstract:
Methods of making catalyst electrodes comprising sputtering at least Pt and Ir onto nanostructured whiskers to provide multiple alternating layers comprising, respectively in any order, at least Pt and Ir. In some exemplary embodiments, catalyst electrodes described, or made as described, herein are anode catalyst, and in other exemplary embodiments cathode catalyst. Catalysts electrodes are useful, for example, in generating H2 and O2 from water.
Abstract:
Nanostructured thin film catalysts which may be useful as fuel cell catalysts are provided, the catalyst materials including intermixed inorganic materials. In some embodiments the nanostructured thin film catalysts may include catalyst materials according to the formula PtxM(1-x) where x is between 0.3 and 0.9 and M is Nb, Bi, Re, Hf, Cu or Zr. The nanostructured thin film catalysts may include catalyst materials according to the formula PtaCobMc where a+b+c=1, a is between 0.3 and 0.9, b is greater than 0.05, c is greater than 0.05, and M is Au, Zr, or Ir. The nanostructured thin film catalysts may include catalyst materials according to the formula PtaTibQc where a+b+c=1, a is between 0.3 and 0.9, b is greater than 0.05, c is greater than 0.05, and Q is C or B.
Abstract translation:提供可用作燃料电池催化剂的纳米结构薄膜催化剂,催化剂材料包括混合的无机材料。 在一些实施方案中,纳米结构薄膜催化剂可以包括根据式PtxM(1-x)的催化剂材料,其中x在0.3和0.9之间,M是Nb,Bi,Re,Hf,Cu或Zr。 纳米结构薄膜催化剂可以包括根据式PtaCobMc的催化剂材料,其中a + b + c = 1,a在0.3和0.9之间,b大于0.05,c大于0.05,M是Au,Zr或 Ir。 纳米结构薄膜催化剂可以包括根据式PtaTibQc的催化剂材料,其中a + b + c = 1,a在0.3和0.9之间,b大于0.05,c大于0.05,Q是C或B.
Abstract:
Processes for forming films comprising multiple layers of nanostructured support elements are described. A first layer of nanostructured support elements is formed by depositing a base material on a substrate and annealing. Further growth of the first layer of nanostructures is then inhibited. Additional layers of nanostructured support elements may be grown on the first layer of nanostructures through additional deposition and annealing steps. The multilayer films provide increased surface area and are particularly useful in devices where catalyst activity is related to the surface area available to support catalyst particles.
Abstract:
Methods of making catalyst electrodes comprising sputtering at least Pt and Ir onto nanostructured whiskers to provide multiple alternating layers comprising, respectively in any order, at least Pt and Ir. In some exemplary embodiments, catalyst electrodes described, or made as described, herein are anode catalyst, and in other exemplary embodiments cathode catalyst. Catalysts electrodes are useful, for example, in generating H2 and O2 from water.
Abstract:
Methods of making catalyst electrodes comprising sputtering at least Pt and Ir onto nanostructured whiskers to provide multiple alternating layers comprising, respectively in any order, at least Pt and Ir. In some exemplary embodiments, catalyst electrodes described, or made as described, herein are anode catalyst, and in other exemplary embodiments cathode catalyst. Catalysts electrodes are useful, for example, in generating H2 and O2 from water.
Abstract:
Nanostructured thin film catalysts which may be useful as fuel cell catalysts are provided, the catalyst materials including intermixed inorganic materials. In some embodiments the nanostructured thin film catalysts may include catalyst materials according to the formula PtxM(1−x) where x is between 0.3 and 0.9 and M is Nb, Bi, Re, Hf, Cu or Zr. The nanostructured thin film catalysts may include catalyst materials according to the formula PtaCobMc where a+b+c=1, a is between 0.3 and 0.9, b is greater than 0.05, c is greater than 0.05, and M is Au, Zr, or Ir. The nanostructured thin film catalysts may include catalyst materials according to the formula PtaTibQc where a+b+c=1, a is between 0.3 and 0.9, b is greater than 0.05, c is greater than 0.05, and Q is C or B.
Abstract translation:提供可用作燃料电池催化剂的纳米结构薄膜催化剂,催化剂材料包括混合的无机材料。 在一些实施方案中,纳米结构薄膜催化剂可以包括根据式PtxM(1-x)的催化剂材料,其中x在0.3和0.9之间,M是Nb,Bi,Re,Hf,Cu或Zr。 纳米结构薄膜催化剂可以包括根据式PtaCobMc的催化剂材料,其中a + b + c = 1,a在0.3和0.9之间,b大于0.05,c大于0.05,M是Au,Zr或 Ir。 纳米结构薄膜催化剂可以包括根据式PtaTibQc的催化剂材料,其中a + b + c = 1,a在0.3和0.9之间,b大于0.05,c大于0.05,Q是C或B.