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。