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    Electric-Field Enhanced Performance in Catalysis and Solid-State Devices Involving Gases
    8.
    发明申请
    Electric-Field Enhanced Performance in Catalysis and Solid-State Devices Involving Gases 审中-公开
    电场增强在催化和涉及气体的固态器件中的性能

    公开(公告)号：US20150253275A1

    公开(公告)日：2015-09-10

    申请号：US14714860

    申请日：2015-05-18

    申请人： University of Florida Research Foundation, Incorporated

    发明人： Bryan M. BLACKBURN ,  Eric D. WACHSMAN ,  Frederick Martin VAN ASSCHE, IV

    IPC分类号： G01N27/30

    CPC分类号： G01N27/30 ,  G01N27/406 ,  G01N27/4074 ,  G01N27/4075 ,  H01M8/0432 ,  H01M8/04537 ,  H01M8/04574 ,  Y02E60/50

    摘要： Electrode configurations for electric-field enhanced performance in catalysis and solid-state devices involving gases are provided. According to an embodiment, electric-field electrodes can be incorporated in devices such as gas sensors and fuel cells to shape an electric field provided with respect to sensing electrodes for the gas sensors and surfaces of the fuel cells. The shaped electric fields can alter surface dynamics, system thermodynamics, reaction kinetics, and adsorption/desorption processes. In one embodiment, ring-shaped electric-field electrodes can be provided around sensing electrodes of a planar gas sensor.

    摘要翻译： 提供了电极配置，用于催化电场增强性能以及涉及气体的固态器件。 根据一个实施例，电场电极可以并入诸如气体传感器和燃料电池的装置中，以形成相对于气体传感器和燃料电池表面的感测电极提供的电场。 成形的电场可以改变表面动力学，系统热力学，反应动力学和吸附/解吸过程。 在一个实施例中，可以在平面气体传感器的感测电极周围设置环形电场电极。

    METHOD AND DEVICE FOR MEASURING VARIOUS PARAMETERS OF MEMBRANE ELECTRODE ASSEMBLY IN FUEL CELL
    9.
    发明申请
    METHOD AND DEVICE FOR MEASURING VARIOUS PARAMETERS OF MEMBRANE ELECTRODE ASSEMBLY IN FUEL CELL 审中-公开
    用于测量燃料电池中膜电极组件的各种参数的方法和装置

    公开(公告)号：US20150219728A1

    公开(公告)日：2015-08-06

    申请号：US14685621

    申请日：2015-04-14

    申请人： Tsinghua University

    发明人： Pucheng PEI ,  Huachi XU ,  Hongshan ZHA

    IPC分类号： G01R31/36

    CPC分类号： G01R31/396 ,  G01R31/3648 ,  G01R31/385 ,  H01M8/04552 ,  H01M8/04574

    摘要： A method and a device for measuring various parameters of a membrane electrode assembly (MEA) in a fuel cell. Hydrogen gas and nitrogen gas or air are supplied to the fuel cell to be tested. A voltage of the fuel cell is diminished by connecting to a load until the voltage is zero. The fuel cell is charged at a constant current. A constant current value is measured by a current sensor. A current signal and a voltage signal are collected by a data collector and are converted into digital quantity signals which are transmitted to a data processing unit. Data are automatically processed by programming of the data processing unit. Parameters, including an electrochemical active surface area of a catalyst, a double-layer capacitance, a hydrogen crossover current, and an impedance of the MEA of the fuel cell are acquired by differentiation and integral operations of the voltage data.

    摘要翻译： 一种用于测量燃料电池中的膜电极组件（MEA）的各种参数的方法和装置。 将氢气和氮气或空气供给到要测试的燃料电池。 燃料电池的电压通过连接到负载直到电压为零来减小。 燃料电池以恒定电流充电。 恒定电流值由电流传感器测量。 电流信号和电压信号由数据采集器收集并被转换成数字量信号，数字量信号被发送到数据处理单元。 通过数据处理单元的编程来自动处理数据。 通过电压数据的微分和积分运算，获得包括催化剂的电化学活性表面积，双层电容，氢交换电流和燃料电池的MEA的阻抗的参数。