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    Method for membrane electrode assembly fabrication and membrane electrode assembly
    3.
    发明授权
    Method for membrane electrode assembly fabrication and membrane electrode assembly 有权
    膜电极组件制造和膜电极组件的方法

    公开(公告)号：US08940461B2

    公开(公告)日：2015-01-27

    申请号：US12731216

    申请日：2010-03-25

    申请人： Junliang Zhang ,  Matthew Dioguardi ,  Frederick T. Wagner

    发明人： Junliang Zhang ,  Matthew Dioguardi ,  Frederick T. Wagner

    IPC分类号： H01M8/10 ,  H01M4/88 ,  H01M4/92

    CPC分类号： H01M8/1004 ,  H01M4/8814 ,  H01M4/8828 ,  H01M4/8882 ,  H01M4/8896 ,  H01M4/926 ,  Y02E60/521

    摘要： A method of coating carbon based electrodes and thick electrodes without mud-cracking is described. The electrode ink is deposited on a decal substrate, and transferred to a hot press before the electrode ink is completely dried. The partially dried electrode ink is hot pressed to the membrane to form a membrane electrode assembly. A membrane electrode assembly including a polymer membrane; and a pair of crack-free electrode layers on opposite sides of the polymer membrane, each of the pair of electrode layers having a thickness of at least about 50 μm is also described.

    摘要翻译： 描述了涂覆碳基电极和厚电极而不产生泥浆破裂的方法。 电极油墨沉积在贴花基材上，并在电极油墨完全干燥之前转移到热压机中。 将部分干燥的电极墨水热压到膜上以形成膜电极组件。 包括聚合物膜的膜电极组件; 以及在聚合物膜的相对侧上的一对无裂纹电极层，还描述了一对电极层中的每一个具有至少约50μm的厚度。

    Platinum-Coated Non-Noble Metal-Noble Metal Core-Shell Electrocatalysts
    4.
    发明申请
    Platinum-Coated Non-Noble Metal-Noble Metal Core-Shell Electrocatalysts 有权
    铂金涂层非贵金属 - 贵金属芯壳电催化剂

    公开(公告)号：US20100197490A1

    公开(公告)日：2010-08-05

    申请号：US12708226

    申请日：2010-02-18

    申请人： Radoslav Adzic ,  Junliang Zhang ,  Yibo Mo ,  Miomir Vukmirovic

    发明人： Radoslav Adzic ,  Junliang Zhang ,  Yibo Mo ,  Miomir Vukmirovic

    IPC分类号： B01J23/42 ,  B01J23/89

    CPC分类号： H01M4/921 ,  B01J23/44 ,  B01J35/0013 ,  B82Y30/00 ,  H01M4/8657 ,  H01M4/926 ,  H01M4/928 ,  H01M2008/1095 ,  Y02E60/50

    摘要： Core-shell particles encapsulated by a thin film of a catalytically active metal are described. The particles are preferably nanoparticles comprising a non-noble core with a noble metal shell which preferably do not include Pt. The non-noble metal-noble metal core-shell nanoparticles are encapsulated by a catalytically active metal which is preferably Pt. The core-shell nanoparticles are preferably formed by prolonged elevated-temperature annealing of nanoparticle alloys in an inert environment. This causes the noble metal component to surface segregate and form an atomically thin shell. The Pt overlayer is formed by a process involving the underpotential deposition of a monolayer of a non-noble metal followed by immersion in a solution comprising a Pt salt. A thin Pt layer forms via the galvanic displacement of non-noble surface atoms by more noble Pt atoms in the salt. The overall process is a robust and cost-efficient method for forming Pt-coated non-noble metal-noble metal core-shell nanoparticles.

    摘要翻译： 描述了由催化活性金属的薄膜包封的核 - 壳颗粒。 颗粒优选是纳米颗粒，其包含优选不包括Pt的贵金属壳的非贵重核。 非贵金属 - 贵金属核 - 壳纳米颗粒被优选Pt的催化活性金属包囊。 核 - 壳纳米颗粒优选通过纳米颗粒合金在惰性环境中的延长的高温退火来形成。 这使得贵金属组分表面分离并形成原子薄的壳。 Pt覆盖层通过涉及非贵金属的单层的潜在不良沉积，然后浸入包含Pt盐的溶液中的方法形成。 通过在盐中更贵的Pt原子通过非贵重表面原子的电位置形成薄的Pt层。 整个过程是用于形成Pt涂覆的非贵金属贵金属核 - 壳纳米颗粒的鲁棒且成本有效的方法。

    Electrocatalysts having gold monolayers on platinum nanoparticle cores, and uses thereof
    5.
    发明申请
    Electrocatalysts having gold monolayers on platinum nanoparticle cores, and uses thereof 有权
    在铂纳米颗粒芯上具有金单层的电催化剂及其用途

    公开(公告)号：US20070026292A1

    公开(公告)日：2007-02-01

    申请号：US11193694

    申请日：2005-08-01

    申请人： Radoslav Adzic ,  Junliang Zhang

    发明人： Radoslav Adzic ,  Junliang Zhang

    IPC分类号： H01M4/90 ,  H01M4/96 ,  B01J23/52

    CPC分类号： H01M4/90 ,  B82Y30/00 ,  H01M4/9083 ,  H01M4/921 ,  H01M4/926

    摘要： The invention relates to gold-coated particles useful as fuel cell electrocatalysts. The particles are composed of an electrocatalytically active core at least partially encapsulated by an outer shell of gold or gold alloy. The invention more particularly relates to such particles having a noble metal-containing core, and more particularly, a platinum or platinum alloy core. In other embodiments, the invention relates to fuel cells containing these electrocatalysts and methods for generating electrical energy therefrom.

    摘要翻译： 本发明涉及可用作燃料电池电催化剂的金涂层颗粒。 颗粒由至少部分地由金或金合金的外壳封装的电催化活性芯组成。 本发明更具体地涉及具有含贵金属的芯，更具体地说是铂或铂合金芯的这种颗粒。 在其它实施方案中，本发明涉及含有这些电催化剂的燃料电池及其从其产生电能的方法。

    Method and electrochemical cell for synthesis and treatment of metal monolayer electrocatalysts metal, carbon, and oxide nanoparticles ion batch, or in continuous fashion
    6.
    发明授权
    Method and electrochemical cell for synthesis and treatment of metal monolayer electrocatalysts metal, carbon, and oxide nanoparticles ion batch, or in continuous fashion 有权
    方法和电化学电池用于以批量或连续方式合成和处理金属单层电催化剂金属，碳和氧化物纳米颗粒

    公开(公告)号：US09017530B2

    公开(公告)日：2015-04-28

    申请号：US13427309

    申请日：2012-03-22

    申请人： Radoslav Adzic ,  Junliang Zhang ,  Kotaro Sasaki

    发明人： Radoslav Adzic ,  Junliang Zhang ,  Kotaro Sasaki

    IPC分类号： C25D17/02 ,  C25D7/00 ,  C25D5/20 ,  C25D17/00 ,  B82Y30/00 ,  H01M4/88

    CPC分类号： C25D7/006 ,  B82Y30/00 ,  C25D5/20 ,  C25D17/002 ,  C25D17/005 ,  C25D17/007 ,  H01M4/8853 ,  Y02E60/50

    摘要： An apparatus and method for synthesis and treatment of electrocatalyst particles in batch or continuous fashion is provided. In one embodiment, the apparatus comprises a sonication bath and a two-compartment chamber submerged in the sonication bath. The upper and lower compartments are separated by a microporous material surface. The upper compartment comprises a cover and a working electrode (WE) connected to a Pt foil contact, with the foil contact connected to the microporous material. The upper chamber further comprises reference counter electrodes. The lower compartment comprises an electrochemical cell containing a solution of metal ions. In one embodiment, the method for synthesis of electrocatalysts comprises introducing a plurality of particles into the apparatus and applying sonication and an electrical potential to the microporous material connected to the WE. After the non-noble metal ions are deposited onto the particles, the non-noble metal ions are displaced by noble-metal ions by galvanic displacement.

    摘要翻译： 提供了以批次或连续方式合成和处理电催化剂颗粒的装置和方法。 在一个实施例中，该装置包括超声处理槽和浸没在超声处理槽中的两室室。 上部和下部隔室由微孔材料表面分开。 上部隔间包括一个盖子和连接到Pt箔接触件的工作电极（WE），箔片接触件连接到微孔材料上。 上室还包括参考对电极。 下室包含含有金属离子溶液的电化学电池。 在一个实施方案中，合成电催化剂的方法包括将多个颗粒引入设备中，并向与WE连接的微孔材料施加超声处理和电位。 在非贵金属离子沉积到颗粒上之后，非贵金属离子通过电镀位移被贵金属离子置换。

    Method and Electrochemical Cell for Synthesis and Treatment of Metal Monolayer Electrocatalysts Metal, Carbon, and Oxide Nanoparticles Ion Batch, or in Continuous Fashion
    7.
    发明申请
    Method and Electrochemical Cell for Synthesis and Treatment of Metal Monolayer Electrocatalysts Metal, Carbon, and Oxide Nanoparticles Ion Batch, or in Continuous Fashion 有权
    金属单层电催化剂金属，碳和氧化物纳米粒子在批量或连续时尚中的合成和处理方法与电化学电池

    公开(公告)号：US20120245017A1

    公开(公告)日：2012-09-27

    申请号：US13427309

    申请日：2012-03-22

    申请人： Radoslav Adzic ,  Junliang Zhang ,  Kotaro Sasaki

    发明人： Radoslav Adzic ,  Junliang Zhang ,  Kotaro Sasaki

    IPC分类号： B01J37/34 ,  B01J23/89 ,  B01J23/42 ,  C25D17/02 ,  B01J23/44 ,  B82Y40/00

    CPC分类号： C25D7/006 ,  B82Y30/00 ,  C25D5/20 ,  C25D17/002 ,  C25D17/005 ,  C25D17/007 ,  H01M4/8853 ,  Y02E60/50

    摘要： An apparatus and method for synthesis and treatment of electrocatalyst particles in batch or continuous fashion is provided. In one embodiment, the apparatus comprises a sonication bath and a two-compartment chamber submerged in the sonication bath. The upper and lower compartments are separated by a microporous material surface. The upper compartment comprises a cover and a working electrode (WE) connected to a Pt foil contact, with the foil contact connected to the microporous material. The upper chamber further comprises reference counter electrodes. The lower compartment comprises an electrochemical cell containing a solution of metal ions. In one embodiment, the method for synthesis of electrocatalysts comprises introducing a plurality of particles into the apparatus and applying sonication and an electrical potential to the microporous material connected to the WE. After the non-noble metal ions are deposited onto the particles, the non-noble metal ions are displaced by noble-metal ions by galvanic displacement.

    摘要翻译： 提供了以批次或连续方式合成和处理电催化剂颗粒的装置和方法。 在一个实施例中，该装置包括超声处理槽和浸没在超声处理槽中的两室室。 上部和下部隔室由微孔材料表面分开。 上部隔间包括一个盖子和连接到Pt箔接触件的工作电极（WE），箔片接触件连接到微孔材料上。 上室还包括参考对电极。 下室包含含有金属离子溶液的电化学电池。 在一个实施方案中，合成电催化剂的方法包括将多个颗粒引入设备中，并向与WE连接的微孔材料施加超声处理和电位。 在非贵金属离子沉积到颗粒上之后，非贵金属离子通过电镀位移被贵金属离子置换。

    Graphite Particle-Supported Pt and Pt Alloy Electrocatalyst with Controlled Exposure of Defined Crystal Faces for Oxygen Reduction Reaction (ORR)
    8.
    发明申请
    Graphite Particle-Supported Pt and Pt Alloy Electrocatalyst with Controlled Exposure of Defined Crystal Faces for Oxygen Reduction Reaction (ORR) 审中-公开
    石墨颗粒支持的Pt和Pt合金电催化剂，具有受限制的用于氧还原反应的晶面的​​暴露（ORR）

    公开(公告)号：US20120208693A1

    公开(公告)日：2012-08-16

    申请号：US13027908

    申请日：2011-02-15

    申请人： Junliang Zhang ,  Zhiqiang Yu ,  Zhongyi Liu

    发明人： Junliang Zhang ,  Zhiqiang Yu ,  Zhongyi Liu

    IPC分类号： H01M4/88

    CPC分类号： H01M4/8605 ,  H01M4/921 ,  H01M4/926 ,  H01M8/1007

    摘要： A method for forming an electrocatalyst for fuel cell applications comprises electrolessly depositing a first plurality of nickel particles onto carbon-support particles. The nickel particles are formed from a nickel ion-containing aqueous solution. At least a portion of the nickel particles are replaced with platinum via a galvanic displacement reaction to form a second plurality of nickel particles coated with a platinum layer. During this displacement reaction step, the nickel particles are heated to a temperature sufficient to form the platinum layer. Finally, the second plurality of nickel particles is optionally incorporated into a cathode layer of a fuel cell.

    摘要翻译： 形成燃料电池用电极催化剂的方法包括将第一多个镍颗粒无电沉积到碳载体颗粒上。 镍颗粒由含镍离子的水溶液形成。 通过电位移反应将至少一部分镍颗粒替换为铂，以形成涂有铂层的第二多个镍颗粒。 在该置换反应步骤期间，将镍颗粒加热到足以形成铂层的温度。 最后，第二组镍颗粒任选地并入燃料电池的阴极层。