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公开(公告)号：US07871738B2
公开(公告)日：2011-01-18
申请号：US12338736
申请日：2008-12-18
摘要： A method of preparing a nanosegregated Pt alloy having enhanced catalytic properties. The method includes providing a sample of Pt and one or more of a transition metal in a substantially inert environment, and annealing the sample in such an environment for a period of time and at a temperature profile to form a nanosegregated Pt alloy having a Pt-skin on a surface. The resulting alloy is characterized by a plurality of compositionally oscillatory atomic layers resulting in an advantageous electronic structure with enhanced catalytic properties.
摘要翻译： 制备具有增强催化性能的纳米分离Pt合金的方法。 该方法包括在基本上惰性的环境中提供Pt和一种或多种过渡金属样品，并在这样的环境中将样品退火一段时间和温度分布，以形成具有Pt- 表面上的皮肤。 所得合金的特征在于多个组成振荡的原子层，从而形成具有增强催化性能的有利的电子结构。
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2.发明授权公开(公告)号：US08685878B2
公开(公告)日：2014-04-01
申请号：US13453782
申请日：2012-04-23
IPC分类号： H01M4/88 , B01J23/00 , B01J23/40 , B01J23/74 , B32B5/16 , B32B9/00 , B32B15/02 , B32B19/00 , B32B21/02 , B32B23/02 , B32B27/02 , H01M4/02 , H01M4/36 , H01M4/90 , H01M4/92 , C22C5/02 , C22C5/04
CPC分类号： H01M4/921 , H01M2004/028 , Y10S977/773 , Y10S977/81 , Y10S977/948 , Y10T428/12028 , Y10T428/12181 , Y10T428/12493 , Y10T428/2991
摘要： A multimetallic nanoscale catalyst having a core portion enveloped by a shell portion and exhibiting high catalytic activity and improved catalytic durability. In various embodiments, the core/shell nanoparticles comprise a gold particle coated with a catalytically active platinum bimetallic material. The shape of the nanoparticles is substantially defined by the particle shape of the core portion. The nanoparticles may be dispersed on a high surface area substrate for use as a catalyst and is characterized by no significant loss in surface area and specific activity following extended potential cycling.
摘要翻译： 一种多金属纳米级催化剂，其核心部分被外壳部分包围并显示出高催化活性和改进的催化耐久性。 在各种实施方案中，核/壳纳米颗粒包含用催化活性的铂双金属材料涂覆的金颗粒。 纳米颗粒的形状基本上由芯部分的颗粒形状限定。 纳米颗粒可以分散在高表面积底物上用作催化剂，其特征在于延长的电位循环后表面积和比活性没有明显的损失。
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3.发明授权公开(公告)号：US08178463B2
公开(公告)日：2012-05-15
申请号：US12754323
申请日：2010-04-05
IPC分类号： H01M4/88 , H01M4/02 , H01M4/36 , H01M4/92 , H01M4/90 , B01J21/18 , B01J23/00 , B01J23/40 , C22C5/04 , C22C5/02 , B32B5/16 , B32B9/00 , B32B15/02 , B32B17/02 , B32B19/00 , B32B21/02 , B32B23/02 , B32B27/02 , B32B15/00 , B22F7/00 , B22F7/02 , B22F1/02 , B23K35/36 , C25D5/10
CPC分类号： H01M4/921 , H01M2004/028 , Y10S977/773 , Y10S977/81 , Y10S977/948 , Y10T428/12028 , Y10T428/12181 , Y10T428/12493 , Y10T428/2991
摘要： A multimetallic nanoscale catalyst having a sore portion enveloped by a shell portion and exhibiting high catalytic activity and improved catalytic durability. In various embodiments, the core/shell nanoparticles comprise a gold particle coated with a catalytically active platinum bimetallic material. The shape of the nanoparticles is substantially defined by the particle shape of the core portion. The nanoparticles may be dispersed on a high surface area substrate for use as a catalyst and is characterized by no significant loss in surface area and specific activity following extended potential cycling.
摘要翻译： 一种多金属纳米尺寸催化剂，其具有由壳部分包围并具有高催化活性和改善的催化耐久性的酸洗部分。 在各种实施方案中，核/壳纳米颗粒包含用催化活性的铂双金属材料涂覆的金颗粒。 纳米颗粒的形状基本上由芯部分的颗粒形状限定。 纳米颗粒可以分散在高表面积底物上用作催化剂，其特征在于延长的电位循环后表面积和比活性没有明显的损失。
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公开(公告)号：US20110077147A1
公开(公告)日：2011-03-31
申请号：US12961870
申请日：2010-12-07
CPC分类号： H01M4/921 , B82Y30/00 , G06F19/3418 , G16H50/20 , H01M4/926
摘要： A method of preparing a nanosegregated Pt alloy having enhanced catalytic properties. The method includes providing a sample of Pt and one or more of a transition metal in a substantially inert environment, and annealing the sample in such an environment for a period of time and at a temperature profile to form a nanosegregated Pt alloy having a Pt-skin on a surface. The resulting alloy is characterized by a plurality of compositionally oscillatory atomic layers resulting in an advantageous electronic structure with enhanced catalytic properties.
摘要翻译： 制备具有增强催化性能的纳米分离Pt合金的方法。 该方法包括在基本上惰性的环境中提供Pt和一种或多种过渡金属样品，并在这样的环境中将样品退火一段时间和温度分布，以形成具有Pt- 表面上的皮肤。 所得合金的特征在于多个组成振荡的原子层，从而形成具有增强催化性能的有利的电子结构。
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5.发明授权公开(公告)号：US09246177B2
公开(公告)日：2016-01-26
申请号：US13451852
申请日：2012-04-20
摘要： Compositions and methods of preparing a bimetallic alloy having enhanced electrocatalytic properties are provided. The composition comprises a PtNi substrate having a surface layer, a near-surface layer, and an inner layer, where the surface layer comprises a nickel-depleted composition, such that the surface layer comprises a platinum skin having at least one atomic layer of platinum.
摘要翻译： 提供了制备具有增强的电催化性能的双金属合金的组合物和方法。 该组合物包括具有表面层，近表面层和内层的PtNi衬底，其中表面层包含缺铜组合物，使得表面层包含具有至少一个铂原子层的铂皮膜 。
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6.发明申请公开(公告)号：US20130085061A1
公开(公告)日：2013-04-04
申请号：US13451852
申请日：2012-04-20
摘要： Compositions and methods of preparing a bimetallic alloy having enhanced electrocatalytic properties are provided. The composition comprises a PtNi substrate having a surface layer, a near-surface layer, and an inner layer, where the surface layer comprises a nickel-depleted composition, such that the surface layer comprises a platinum skin having at least one atomic layer of platinum.
摘要翻译： 提供了制备具有增强的电催化性能的双金属合金的组合物和方法。 该组合物包括具有表面层，近表面层和内层的PtNi衬底，其中表面层包含缺铜组合物，使得表面层包含具有至少一个铂原子层的铂皮膜 。
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公开(公告)号：US20120208696A1
公开(公告)日：2012-08-16
申请号：US13453782
申请日：2012-04-23
IPC分类号： B01J23/89 , B01J23/42 , B01J23/745 , B01J23/75 , B01J23/755 , B01J35/02 , B01J23/52 , B82Y30/00
CPC分类号： H01M4/921 , H01M2004/028 , Y10S977/773 , Y10S977/81 , Y10S977/948 , Y10T428/12028 , Y10T428/12181 , Y10T428/12493 , Y10T428/2991
摘要： A multimetallic nanoscale catalyst having a core portion enveloped by a shell portion and exhibiting high catalytic activity and improved catalytic durability. In various embodiments, the core/shell nanoparticles comprise a gold particle coated with a catalytically active platinum bimetallic material. The shape of the nanoparticles is substantially defined by the particle shape of the core portion. The nanoparticles may be dispersed on a high surface area substrate for use as a catalyst and is characterized by no significant loss in surface area and specific activity following extended potential cycling.
摘要翻译： 一种多金属纳米级催化剂，其核心部分被外壳部分包围并显示出高催化活性和改进的催化耐久性。 在各种实施方案中，核/壳纳米颗粒包含用催化活性的铂双金属材料涂覆的金颗粒。 纳米颗粒的形状基本上由芯部分的颗粒形状限定。 纳米颗粒可以分散在高表面积底物上用作催化剂，其特征在于延长的电位循环后表面积和比活性没有明显的损失。
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公开(公告)号：US20110245068A1
公开(公告)日：2011-10-06
申请号：US12754323
申请日：2010-04-05
IPC分类号： H01M4/92 , B01J23/42 , B01J23/745 , B01J23/52
CPC分类号： H01M4/921 , H01M2004/028 , Y10S977/773 , Y10S977/81 , Y10S977/948 , Y10T428/12028 , Y10T428/12181 , Y10T428/12493 , Y10T428/2991
摘要： A multimetallic nanoscale catalyst having a sore portion enveloped by a shell portion and exhibiting high catalytic activity and improved catalytic durability. In various embodiments, the core/shell nanoparticles comprise a gold particle coated with a catalytically active platinum bimetallic material. The shape of the nanoparticles is substantially defined by the particle shape of the core portion. The nanoparticles may be dispersed on a high surface area substrate for use as a catalyst and is characterized by no significant loss in surface area and specific activity following extended potential cycling.
摘要翻译： 一种多金属纳米尺寸催化剂，其具有由壳部分包围并具有高催化活性和改善的催化耐久性的酸洗部分。 在各种实施方案中，核/壳纳米颗粒包含用催化活性的铂双金属材料涂覆的金颗粒。 纳米颗粒的形状基本上由芯部分的颗粒形状限定。 纳米颗粒可以分散在高表面积底物上用作催化剂，其特征在于延长的电位循环后表面积和比活性没有明显的损失。
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公开(公告)号：US20090247400A1
公开(公告)日：2009-10-01
申请号：US12338736
申请日：2008-12-18
摘要： A method of preparing a nanosegregated Pt alloy having enhanced catalytic properties. The method includes providing a sample of Pt and one or more of a transition metal in a substantially inert environment, and annealing the sample in such an environment for a period of time and at a temperature profile to form a nanosegregated Pt alloy having a Pt-skin on a surface. The resulting alloy is characterized by a plurality of compositionally oscillatory atomic layers resulting in an advantageous electronic structure with enhanced catalytic properties.
摘要翻译： 制备具有增强催化性能的纳米分离Pt合金的方法。 该方法包括在基本上惰性的环境中提供Pt和一种或多种过渡金属样品，并在这样的环境中将样品退火一段时间和温度分布，以形成具有Pt- 表面上的皮肤。 所得合金的特征在于多个组成振荡的原子层，从而形成具有增强催化性能的有利的电子结构。
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