In-situ measurement of humidity distribution and its effect on the performance of a proton exchange membrane fuel cell

Zhao, Junjie; Tu, Zhengkai; Chan, Siew Hwa

doi:10.1016/j.energy.2021.122270

Cited by 39 publications

(10 citation statements)

References 51 publications

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“…The model validation, including numerical and physical, is highly desirable for practical applications [ 32 , 33 ]. To investigate the performance of PEMFC, the voltage current density or polarization curve are the most important outputs of numerical simulations.…”

Section: Model Developmentmentioning

confidence: 99%

“…The performance of PEMFC usually depends on physical factors, including current density, water contents, exchange coefficient, temperature, pressure, and geomtric parameters [ 24 ]. Up to date, various 3D PEMFC models were suggested with help of CFD analysis for the pratical implementation of designed optimization and the performance of parameters [ 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ]. In these models, species transport and water management under typical PEMFC operating conditions are simulated.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Operating and Electrochemical Parameters on PEMFC Performance: A Simulation Study

et al. 2023

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Proton exchange membrane fuel cell, or polymer electrolyte fuel cell, (PEMFC) has received a significant amount of attention for green energy applications due to its low carbon emission and less other toxic pollution capacity. Herein, we develop a three-dimensional (3D) computational fluid dynamic model. The values of temperature, pressure, relative humidity, exchange coefficient, reference current density (RCD), and porosity values of the gas diffusion layer (GDL) were taken from the published literature. The results demonstrate that the performance of the cell is improved by modifying temperature and operating pressure. Current density is shown to degrade with the rising temperature as explored in this study. The findings show that at 353 K, the current density decreases by 28% compared to that at 323 K. In contrast, studies have shown that totally humidified gas passing through the gas channel results in a 10% higher current density yield, and that an evaluation of a 19% higher RCD value results in a similar current density yield.

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Section: Model Developmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Operating and Electrochemical Parameters on PEMFC Performance: A Simulation Study

et al. 2023

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“…Notably, studies focusing on moisture-induced proton conductivity switching in MOFs have identified water molecules as suitable triggers due to their solid donor–acceptor capabilities and ease of control. Moreover, since practical applications like PEMFCs necessitate structural stability in high humidity environments, 40 the investigation of proton conductivity switching MOFs induced by moisture has evolved from understanding reversible proton transport pathways 41 to employing reversible MOFs capable of enhancing proton conductivity under humid conditions. 27 Among these MOFs, Li and Chen 42 reported a novel self-adaptive MOF, BUT-8(Cr)A, which exhibits proton conductivity switching behavior as water molecules induce structural flexibility.…”

Section: Introductionmentioning

confidence: 99%

Moisture-triggered proton conductivity switching in metal–organic frameworks: role of coordinating solvents

Lee,

Oruganti,

Lee

et al. 2024

J. Mater. Chem. A

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“…[26][27][28] Zhengkai Tu et al investigated the effect of water and current density distribution on fuel cell performance using microsensors embedded in a cathode flow field plate to measure relative parameters in situ under different conditions. [29][30][31] Compared to the differences in production processes, Honda developed a sensor using flexible printed circuit (FPC) board-embedded resistor technology for measuring water content in vehicles. [32] It maintains the same thickness and shape as the membrane electrode assembly (MEA), making it easier to integrate the stack.…”

Section: Introductionmentioning

confidence: 99%

An In Situ Signal Amplification Sensor for Measuring In‐Plane Current Density Distribution in a Proton Exchange Membrane Fuel Cell

Wu,

Wang,

Liu

et al. 2023

Energy Tech

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Inconsistency of current density distribution in‐plane in fuel cells is a common phenomenon. This study develops a novel highly‐integrated sensor with the feature of signal in‐situ amplification for measuring in‐plane current density. First, the sensor is designed and fabricated based on the idea of in‐situ amplification of in‐plane signals before transmission. Then, the sensor accuracy is quantitatively evaluated prior to fuel cell experiments based on a single‐point calibration approach. Finally, the distribution of in‐plane current density is observed using the sensor in the fuel cell test system. Additionally, the measurement accuracy of the circuit current in the test bench is compared by introducing the calibrated segment average amplification factors. The results indicate that these signals amplified by the sensor can effectively withstand the effects of signal transmission loss and interference, and it can be determined that the measurement accuracy of the sensor is controlled within 97% in the small current range and within 98% in the non‐small current range in normal operation. This work provides a feasible solution for in‐situ measurements of in‐plane current density, with significant improvements in signal acquisition, structural matching, and fabrication process compared to existing such sensors.This article is protected by copyright. All rights reserved.

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In-situ measurement of humidity distribution and its effect on the performance of a proton exchange membrane fuel cell

Cited by 39 publications

References 51 publications

Influence of Operating and Electrochemical Parameters on PEMFC Performance: A Simulation Study

Influence of Operating and Electrochemical Parameters on PEMFC Performance: A Simulation Study

Moisture-triggered proton conductivity switching in metal–organic frameworks: role of coordinating solvents

An In Situ Signal Amplification Sensor for Measuring In‐Plane Current Density Distribution in a Proton Exchange Membrane Fuel Cell

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