Simultaneous characterization of oxygen transport resistance and spatially resolved liquid water saturation at high-current density of polymer electrolyte membrane fuel cells with varied cathode relative humidity

Muirhead, Daniel; Banerjee, Rupak; Lee, Jong‐Min; George, Michael G.; Gao, Nan; Hang, Liu; Chevalier, S.; Hinebaugh, James; Han, Kewen; Bazylak, Aimy

doi:10.1016/j.ijhydene.2017.10.031

Cited by 40 publications

(31 citation statements)

References 79 publications

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“…In situ observations of liquid water distribution in fuel cells operating at an intermediate temperature of 60°C have been presented in [7,8]. The current density was 1.5 AÁcm À2 in the experiments reported in [8] while the experiments in [7] were at the limiting current density, close to 2.5 AÁcm À2 . Another difference lies in the bipolar plate design.…”

Section: Intermediate Operating Temperatures ($60°c Rh Ch = 100%)mentioning

confidence: 90%

“…T % 40°C, the liquid water distributions obtained by X-ray tomography also show that the liquid water can be present almost everywhere, both below the ribs and below the channels. In addition, the water distributions presented in [7] for the intermediate temperature of 60°C indicate a strong influence of the relative humidity in the feed channels with liquid water again almost everywhere in the GDL when the gas in the channels is fully humidified.…”

Section: Introductionmentioning

confidence: 92%

“…On the experimental side, several groups have contributed to this field using X-ray tomography microscopy, e.g. [5][6][7][8], or neutron radiography, e.g. [9,10], techniques.…”

Section: Introductionmentioning

confidence: 99%

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Liquid water in cathode gas diffusion layers of PEM fuel cells: Identification of various pore filling regimes from pore network simulations

Carrère

Prat

2019

International Journal of Heat and Mass Transfer

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Section: Intermediate Operating Temperatures ($60°c Rh Ch = 100%)mentioning

confidence: 90%

Section: Introductionmentioning

confidence: 92%

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Liquid water in cathode gas diffusion layers of PEM fuel cells: Identification of various pore filling regimes from pore network simulations

Carrère

Prat

2019

International Journal of Heat and Mass Transfer

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“…This value is in the range of literature, i.e. Muirhead et al (10) reported mass transport resistance values around 2 s/cm for a fuel cell with SGL 25BC GDL compressed at 25%. Taking into account that our GDL is slightly thicker and more compressed (~40%), the measured are typically in the expected range of values.…”

Section: Mass Transport Resistance Measurementsmentioning

confidence: 50%

“…. [10] Equation (10) shows that the distribution / is a function of the Peclet number only. Thus current density distribution measurements can be used to identifiy the Peclet number and then the effective GDL diffusity.…”

Section: Current Density Distribution Modelmentioning

confidence: 99%

Polymer Electrolyte Membrane Fuel Cell Characterisation Based on Current Distribution Measurements

et al. 2018

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In this work, a methodology to characterize polymer electrolyte membrane (PEM) fuel cell mass transport phenomena is described. A segmented fuel cell with two straight channels is used to measure the current density distribution along the channel. A onedimensional current density distribution model is also developed to analyze the measurement. This model is first validated at low current density where the current density distribution is function of the oxygen stoichiometry only, and then used at high current density (around 0.1 V) to measure the mass transport resistance. Good agreement between our measurements based on current density distribution and the literature is reported. The measured mass transport resistances are found to be constant regardless the inlet air mass flow rate, concluding to the robustness of our methodology.

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In Situ and Operando Characterization of Proton Exchange Membrane Fuel Cells

2019

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For proton-exchange-membrane fuel cells (PEMFCs) to become a mainstream energy source, significant improvements in their performance, durability, and efficiency are necessary. To improve their durability, there must be a solid understanding of how the structural and electrochemical processes are affected during operation to propose mitigation strategies. To this aim, in situ and operando characterization techniques locally identify structural and electrochemical processes, which cannot be captured using conventional techniques. Nevertheless, linking these properties in the same geometric area has been challenging due to its inherent limitations, such as sample size and imaging resolution. This has created a knowledge gap in structure-to-electrochemical performance relationships as operation and degradation unevenly affect different areas of the cell.

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Simultaneous characterization of oxygen transport resistance and spatially resolved liquid water saturation at high-current density of polymer electrolyte membrane fuel cells with varied cathode relative humidity

Cited by 40 publications

References 79 publications

Liquid water in cathode gas diffusion layers of PEM fuel cells: Identification of various pore filling regimes from pore network simulations

Liquid water in cathode gas diffusion layers of PEM fuel cells: Identification of various pore filling regimes from pore network simulations

Polymer Electrolyte Membrane Fuel Cell Characterisation Based on Current Distribution Measurements

In Situ and Operando Characterization of Proton Exchange Membrane Fuel Cells

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