Diagnostic tools for liquid water in PEM fuel cells

Stumper, Jürgen; Löhr, Michael; Hamada, Stephen

doi:10.1016/j.jpowsour.2004.11.036

Cited by 86 publications

(53 citation statements)

References 7 publications

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“…Therefore, a number of experimental methods have been investigated, in order to evaluate, quantify, measure and / or visualise the water dynamics and distribution under different modes of operation. Such techniques should ideally satisfy three requirements as defined by Stumper et al [37]: (i) in situ applicability, (ii) minimal invasiveness and (iii) ability to provide information on the distribution of liquid water over the active area.…”

Section: Liquid Water Mapping In Fuel Cellsmentioning

confidence: 99%

“…These methods are attractive because of their simplicity, but the most powerful method for water visualisation, (satisfying all three criteria from Stumper et al [37]) is 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 5 neutron imaging. This technique is based on attenuation of a neutron by hydrogencontaining compounds such as water, and transparency to neutrons of most fuel cell construction materials (aluminium, stainless steel).…”

Section: Liquid Water Mapping In Fuel Cellsmentioning

confidence: 99%

See 1 more Smart Citation

The Hydro-electro-thermal Performance of Air-cooled, Open-cathode Polymer Electrolyte Fuel Cells: Combined Localised Current Density, Temperature and Water Mapping

Meyer

Ashton

Jervis

et al. 2015

Electrochimica Acta

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In situ diagnostic techniques provide a means of understanding the internal workings of fuel cells so that improved designs and operating regimes can be identified. Here, a novel metrology approach is reported that combines current and temperature mapping with water visualisation using neutron radiography.The approach enables a hydro-electro-thermal performance map to be generated that is applied to an air-cooled, open-cathode polymer electrolyte fuel cell. This type of fuel cell exhibits a particularly interesting coupled relationship between water, current and heat, as the air supply has the due role of cooling the stack as well as providing the cathode reactant feed via a single source. It is found that water predominantly accumulates under the cooling channels (thickness of 70-100 µm under the cooling channels and 5-25 µm in the active channels at 0.5 A cm KeywordsAir-cooled open-cathode polymer electrolyte fuel cell; water mapping; neutron imaging; temperature mapping; current mapping.

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Section: Liquid Water Mapping In Fuel Cellsmentioning

confidence: 99%

Section: Liquid Water Mapping In Fuel Cellsmentioning

confidence: 99%

The Hydro-electro-thermal Performance of Air-cooled, Open-cathode Polymer Electrolyte Fuel Cells: Combined Localised Current Density, Temperature and Water Mapping

Meyer

Ashton

Jervis

et al. 2015

Electrochimica Acta

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“…Stumper et al [75] obtained the of GDL using the limiting current density measurements (in-situ measurements).…”

Section: Experimental Techniquesmentioning

confidence: 99%

Experimental measurement of effective diffusion coefficient of gas diffusion layer/microporous layer in PEM fuel cells

Chan

Zamel

et al. 2012

Electrochimica Acta

137

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“…Pei et al [4] also showed that the pressure drop on the hydrogen side of a 10 kW fuel cell stack can be estimated correctly by calculating the friction loss in the flow channel. Stumper et al [5] presented a diagnostic tool that provides insight about the liquid water distribution in a single custom-design PEM fuel cell using current measurement along the length of the cell. By fitting the experimental data to a simplified Srinivasan equation [6], the pure ohmic resistance of the cell was determined.…”

Section: Introductionmentioning

confidence: 99%

200W PEM Fuel Cell Stack with Online Model-Based Monitoring System

Khanungkhid¹,

Piumsomboon²

2014

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Abstract. Although various designs have been introduced to improve the performance of a Proton Exchange Membrane Fuel Cell (PEMFC) stack system, fault conditions, such as drying or flooding, may still occur due to the complexity of the process. The development of a system which can detect these fault conditions is a key to operate PEMFC stack system effectively. In this study, a monitoring system for a 200W commercial PEMFC stack system has been developed by constructing models for determining the flooding and drying conditions inside the cell. Since the membrane resistance and pressure drop across the stack are important parameters for determining either drying or flooding conditions taking place inside the fuel cell, the online model-based monitoring system is developed by adopting existing algorithms. A number of instruments are installed to measure relevant data. The data acquisition system and mathematical models have been programmed under LabVIEW TM environment. To indicate the abnormal conditions inside the fuel cell stack, the model prediction is compared with the experimental measured values and the size of the discrepancy will be an indicator.

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Diagnostic tools for liquid water in PEM fuel cells

Cited by 86 publications

References 7 publications

The Hydro-electro-thermal Performance of Air-cooled, Open-cathode Polymer Electrolyte Fuel Cells: Combined Localised Current Density, Temperature and Water Mapping

The Hydro-electro-thermal Performance of Air-cooled, Open-cathode Polymer Electrolyte Fuel Cells: Combined Localised Current Density, Temperature and Water Mapping

Experimental measurement of effective diffusion coefficient of gas diffusion layer/microporous layer in PEM fuel cells

200W PEM Fuel Cell Stack with Online Model-Based Monitoring System

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