In situ approach for current distribution measurement in fuel cells

Ghosh, Priyanka; Wüster, T.; Dohle, H.; Kimiaie, Nicola; Mergel, Jürgen; Stolten, Detlef

doi:10.1016/j.jpowsour.2005.03.219

Cited by 70 publications

(20 citation statements)

References 8 publications

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“…Visualization techniques using a transparent single cell [6,9] or measurement of the current distribution throughout the entire area of the electrode [8,[10][11][12][13][14] are useful tools in these endeavours. Measurement of the current distribution in particular can produce a quantitative estimation of spatially different performances along the surface of a MEA during operation.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of current distribution in a direct methanol fuel cell with serpentine flow-fields under various operating conditions

Park

Kim

Lim

et al. 2009

Journal of Power Sources

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Section: Introductionmentioning

confidence: 99%

Experimental investigation of current distribution in a direct methanol fuel cell with serpentine flow-fields under various operating conditions

Park

Kim

Lim

et al. 2009

Journal of Power Sources

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“…The invasive techniques can be distinguished by methods using segmented and not segmented cell configurations. The measurement of local currents with resistors can be taken either outside (ex-situ) [8] or inside (in situ) [11,12] the fuel cell system. An alternative solution is to use hall sensors to determine local currents without inserting additional resistances into the system [13][14][15].…”

Section: Systems For Current Density Distribution Mappingmentioning

confidence: 99%

Current Density Distribution Mapping in PEM Fuel Cells as An Instrument for Operational Measurements

et al. 2010

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A newly developed measurement system for current density distribution mapping has enabled a new approach for operational measurements in proton exchange membrane fuel cells (PEMFC). Taking into account previously constructed measurement systems, a method based on a multi layer printed circuit board was chosen for the development of the new system. This type of system consists of a sensor, a special electronic device and the control and visualization PC. For the acquisition of the current density distribution values, a sensor device was designed and installed within a multilayer printed circuit board with integrated shunt resistors. Varying shunt values can be taken into consideration with a newly developed and evaluated calibration method. The sensor device was integrated in a PEM fuel cell stack to prove the functionality of the whole measurement system. A software application was implemented to visualize and save the measurement values. Its functionality was verified by operational measurements within a PEMFC system. Measurement accuracy and possible negative reactions of the sensor device during PEMFC operation are discussed in detail in this paper. The developed system enables operational measurements for different operating phases of PEM fuel cells. Additionally, this can be seen as a basis for new opportunities of optimization for fuel cell design and operation modes.

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“…One of the methods is the segmented cell method with a passive resistor network [1]. However, this method has the disadvantages of complexity, cost, and inaccurate measurement, because the resistor network must be embedded in the cells and electric contact must be established.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Current Distribution in a PEMFC using a Magnetic Sensor Probe

2015

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Many methods for measuring current distribution in proton exchange membrane fuel cells (PEMFCs) have been developed because it is important to determine the fuel cell's operating conditions. A method for measuring current distribution in the stack using a tri-axial magnetic sensor probe has been proposed. The advantage of this method is that it does not affect the PEMFC, because the measurement is nondestructive and makes no electrical contact. In this study, the current distribution was investigated and evaluated under the steady and dry-out conditions in PEMFC cells.

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In situ approach for current distribution measurement in fuel cells

Cited by 70 publications

References 8 publications

Experimental investigation of current distribution in a direct methanol fuel cell with serpentine flow-fields under various operating conditions

Experimental investigation of current distribution in a direct methanol fuel cell with serpentine flow-fields under various operating conditions

Current Density Distribution Mapping in PEM Fuel Cells as An Instrument for Operational Measurements

Evaluation of Current Distribution in a PEMFC using a Magnetic Sensor Probe

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