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    HIGH-RESOLUTION IN SITU ELECTROCHEMICAL NMR WITH INTERDIGITATED ELECTRODES
    2.
    发明申请
    HIGH-RESOLUTION IN SITU ELECTROCHEMICAL NMR WITH INTERDIGITATED ELECTRODES 审中-公开

    公开(公告)号：US20180284042A1

    公开(公告)日：2018-10-04

    申请号：US15764811

    申请日：2016-09-30

    申请人： Georgetown University

    发明人： YuYe J. Tong ,  Eric G. Sorte

    IPC分类号： G01N24/08

    摘要： A system for carrying out electrochemical nuclear magnetic resonance spectroscopy (EC-NMR) is disclosed, along with methods of manufacturing the EC-NMR system, and methods of using the EC-NMR system to monitor electrochemical reactions. The system comprises interdigitated electrodes arranged in a cylindrically symmetric manner. The system allows for nuclear magnetic resonance spectroscopy to be carried out on a sample during electrolysis with minimal effect to its sensitivity.

    Electrocatalysts, and fuel cells containing them
    3.
    发明授权
    Electrocatalysts, and fuel cells containing them 有权

    公开(公告)号：US10658678B2

    公开(公告)日：2020-05-19

    申请号：US14739063

    申请日：2015-06-15

    申请人： Georgetown University

    发明人： YuYe J. Tong ,  Dejun Chen

    IPC分类号： H01M4/02 ,  H01M4/36 ,  H01M4/92 ,  H01M8/1009

    摘要： Provided are electrocatalysts, fuel cells, methods of making fuel cells, and methods of generating an electric current, each featuring a platinum (Pt)-containing substrate in contact with an aqueous solution comprising Pb2+. Electrocatalysts of the invention are formed via underpotential deposition (UPD) when a trace amount of Pb2+ is present in the electrolyte of a half anodic cell for oxidizing formic acid using Pt as the anode. Surprisingly, the UPD process dramatically enhances the activity of formic acid oxidation, at least as much as 10-fold compared with palladium (Pd) black. In an embodiment, the electrocatalyst comprises a Pt-containing substrate, a submonolayer of lead (Pb) adsorbed onto the Pt-containing substrate, and an aqueous solution comprising Pb2+, wherein the concentration of Pb2+ in the aqueous solution is 10 to 500 μm.

    ELECTROCATALYSTS, AND FUEL CELLS CONTAINING THEM
    4.
    发明申请
    ELECTROCATALYSTS, AND FUEL CELLS CONTAINING THEM 审中-公开
    电动汽车和包含它们的燃料电池

    公开(公告)号：US20160365597A1

    公开(公告)日：2016-12-15

    申请号：US14739063

    申请日：2015-06-15

    申请人： Georgetown University

    发明人： YuYe J. Tong ,  Dejun Chen

    IPC分类号： H01M8/22 ,  H01M4/92

    CPC分类号： H01M4/926 ,  H01M4/921 ,  H01M8/1009

    摘要： Provided are electrocatalysts, fuel cells, methods of making fuel cells, and methods of generating an electric current, each featuring a platinum (Pt)-containing substrate in contact with an aqueous solution comprising Pb2+. Electrocatalysts of the invention are formed via underpotential deposition (UPD) when a trace amount of Pb2+ is present in the electrolyte of a half anodic cell for oxidizing formic acid using Pt as the anode. Surprisingly, the UPD process dramatically enhances the activity of formic acid oxidation, at least as much as 10-fold compared with palladium (Pd) black. In an embodiment, the electrocatalyst comprises a Pt-containing substrate, a submonolayer of lead (Pb) adsorbed onto the Pt-containing substrate, and an aqueous solution comprising Pb2+, wherein the concentration of Pb2+ in the aqueous solution is 10 to 500 μm.

    摘要翻译： 本发明提供电催化剂，燃料电池，制造燃料电池的方法以及产生电流的方法，其特征在于包含与含Pb2 +的水溶液接触的含铂（Pt）的基板。 当使用Pt作为阳极氧化甲酸的半阳极电池的电解质中存在微量的Pb 2+时，本发明的电催化剂是通过欠电位沉积（UPD）形成的。 令人惊讶的是，与钯（Pd）黑相比，UPD方法显着提高了甲酸氧化的活性，至少高达10倍。 在一个实施方案中，电催化剂包括含铂基质，吸附在含Pt基质上的铅（Pb）的亚单层和包含Pb 2+的水溶液，其中水溶液中Pb 2+的浓度为10至500μm。