Disclosure of the internal transport phenomena in an air-cooled proton exchange membrane fuel cell— part II: Parameter sensitivity analysis

Hu, Mengyan; Zhao, Ruiying; Pan, Ruixin; Cao, Gang

doi:10.1016/j.ijhydene.2021.03.015

Cited by 23 publications

(6 citation statements)

References 33 publications

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“…Recently, many studies have analyzed the relationship between various parameters and α NWD using numerical modeling. [33][34][35][36][37][38][39][40] Several of those studies investigated the current density (i) dependence of α NWD under gas supply conditions similar to those in real systems described above in this section. 11,12,15,16 The α − i NWD characteristics in those studies revealed that α NWD tended to decrease with increasing i and tended to stabilize when i exceeded a certain threshold value (c.a., 0.5 A cm −2 ).…”

Section: List Of Symbolsmentioning

confidence: 99%

Effect of Flow Conditions of Anode Hydrogen on Net Water Drag Coefficient of Polymer Electrolyte Fuel Cells

Ito

Wang²,

Ishida³

et al. 2022

J. Electrochem. Soc.

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The net water drag coefficient (αNWD) is supposedly an essential index in water management, and must be negative for system operation for polymer electrolyte fuel cell (PEFC) systems. In this study, αNWD is carefully examined by measurement of the water content in the gases supplied to and those discharged from the cell/stack under gas supply conditions similar to those in a real PEFC system. We focus on the effect of anode hydrogen (H2) flow conditions (i.e., flow rate and relative humidity) on αNWD under a constant flow condition of cathode air. Measured characteristics of current density (i) - αNWD in which the relative humidity of discharged H2 from the anode is constant at around 100%, show that αNWD is stable when i exceeds a certain threshold. The value of αNWD in this stable region is particularly sensitive to changes in the stoichiometric ratio of H2. These measurements also suggest that in the αNWD stable region, almost the entire area of the membrane is fully hydrated, and the effect of back diffusion on αNWD becomes negligible. Analysis of the observed relationships between αNWD and several variables indicate that increasing the H2 circulation flow rate effectively prevents anode dry-out.

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Section: List Of Symbolsmentioning

confidence: 99%

Effect of Flow Conditions of Anode Hydrogen on Net Water Drag Coefficient of Polymer Electrolyte Fuel Cells

Ito

Wang²,

Ishida³

et al. 2022

J. Electrochem. Soc.

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show abstract

“…[34][35][36] Additionally, another solution is designing and optimizing the structure of the cathode current collector plate. 37 For example, improvements in thermal conductivity and hydrophilicity, 38,39 as well as geometric parameters of the channels, including length, 40,41 width, 42,43 height 44,45 and ribchannel ratio. 46,47 While the solutions mentioned above have effectively improved the gas diffusion and water management capability of PEMFCs, there are three drawbacks in the current research.…”

Section: Introductionmentioning

confidence: 99%

“…34–36 Additionally, another solution is designing and optimizing the structure of the cathode current collector plate. 37 For example, improvements in thermal conductivity and hydrophilicity, 38,39 as well as geometric parameters of the channels, including length, 40,41 width, 42,43 height 44,45 and rib-channel ratio. 46,47…”

Section: Introductionmentioning

confidence: 99%

Biomimetic integrated gas diffusion layer inspired by alveoli for enhanced air-breathing fuel cell performance and stability

Chai,

Ning,

Wen

et al. 2023

J. Mater. Chem. A

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“…Narrow flow channels with smaller hydraulic diameters will lead to faster pressure drop and temperature difference [21]. Narrow cathode channel design improves the hydration of the proton exchange membrane and achieves uniformity for the current density distribution [22]. However, cells with narrow channel are easy to cause Gas Diffusion Layer (GDL) flooding under the condition of low temperature [23].…”

Section: Introductionmentioning

confidence: 99%

Testing Study of Different Flow Direction and Structure for Air-Cooled Proton Exchange Membrane Fuel Cell

Geng,

Han,

et al. 2023

IEEE Access

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This work was financially supported by Special project of Guangdong Province Department of Education in key fields of ordinary colleges and universities (Research on matching optimization of flow channel and diffusion layer of cathode open air cooled fuel cell based on multi-physic coupling and multiinfluencing factors)(2023ZDZX3078), Mid-term evaluation and countermeasures for motor vehicle pollution reduction in Shenzhen during the 14th Five Year

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Disclosure of the internal transport phenomena in an air-cooled proton exchange membrane fuel cell— part II: Parameter sensitivity analysis

Cited by 23 publications

References 33 publications

Effect of Flow Conditions of Anode Hydrogen on Net Water Drag Coefficient of Polymer Electrolyte Fuel Cells

Effect of Flow Conditions of Anode Hydrogen on Net Water Drag Coefficient of Polymer Electrolyte Fuel Cells

Biomimetic integrated gas diffusion layer inspired by alveoli for enhanced air-breathing fuel cell performance and stability

Testing Study of Different Flow Direction and Structure for Air-Cooled Proton Exchange Membrane Fuel Cell

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