HYDROGEN CONCENTRATION SENSOR UTILIZING CELL VOLTAGE RESULTING FROM HYDROGEN PARTIAL PRESSURE DIFFERENCE,申请号US20100854832-传众专利搜索

HYDROGEN CONCENTRATION SENSOR UTILIZING CELL VOLTAGE RESULTING FROM HYDROGEN PARTIAL PRESSURE DIFFERENCE

申请公布号：US2012040264(A1)

申请号：US20100854832

申请日期：2010.08.11

申请公布日期：2012.02.16

申请人：

MASLYN ANDREW J.;LAKSHMANAN BALASUBRAMANIAN;GM GLOBAL TECHNOLOGY OPERATIONS, INC.

发明人：MASLYN ANDREW J.;LAKSHMANAN BALASUBRAMANIAN

分类号：H01M8/04;G01M15/10;H01M8/24

主分类号：H01M8/04

摘要：A hydrogen concentration sensor for measuring the hydrogen concentration in an anode sub-system of a fuel cell system. The hydrogen concentration sensor includes a membrane, a first catalyst layer on one side of the membrane and a second catalyst layer on an opposite side of the membrane where the sensor operates as a concentration cell. The first catalyst layer is exposed to fresh hydrogen for the anode side of a fuel cell stack and the second catalyst layer is exposed to an anode recirculation gas from an anode exhaust of the fuel cell stack. The voltage generated by the sensor allows the hydrogen partial pressure in the recirculation gas to be determined, from which the hydrogen concentration can be determined.