Behavior of current distribution evolution under reactant starvation conditions based on a single polymer electrolyte membrane fuel cell (PEMFC) with triple-serpentine flow field: An experimental study

Xia, Zhifeng; Chen, Huicui; Shan, Wanchao; Zhang, Tong; Pei, Pucheng

doi:10.1016/j.ijhydene.2022.12.187

Cited by 28 publications

(2 citation statements)

References 60 publications

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“…However, to broaden the *Corresponding author. E-mail address: yuyongsheng@tongji.edu.cn application range of PEMFCs and optimize their operating performance, several challenges must be addressed [3,4]. The primary challenge is to improve the start-up performance of the cells at low temperatures.…”

Section: Introductionmentioning

confidence: 99%

Effect of Variable Parameters on Droplet Icing Process in Delayed Proton Exchange Membrane Fuel Cell Flow

Yu,

Lu,

Jia

et al. 2024

Preprint

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Modifying the characteristics of the flow channel is essential to retard or prevent icing and improve the low-temperature operational performance of proton exchange membrane fuel cells (PEMFCs). This paper presents a two-dimensional transient mathematical model that investigates the influences of surface temperature, wettability, and volume size on the droplet icing process. The findings suggest that raising the surface temperature of the flow channel results in a longer droplet freezing time. Raising the surface temperature from 248.15 K to 268.15 K can delay droplet freezing time by up to 62%. Increasing the surface contact angle from 78° to 150° can delay droplet freezing time by 45%. An increase in droplet volume can also prolong the time required for droplet freezing. Increasing the droplet volume size from 1 µL to 4 µL can delay the droplet freezing time by 35%. Moreover, the optimal parameters for maximizing the duration of droplet freezing are identified using response surface methodology. The corresponding conditions are found to be a surface temperature of 267.96 K, a surface contact angle of 134.08°, and a droplet volume of 3.29 µL. This work offers valuable guidance for enhancing the low-temperature performance of PEMFCs through flow channel design optimization.

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Section: Introductionmentioning

confidence: 99%

Effect of Variable Parameters on Droplet Icing Process in Delayed Proton Exchange Membrane Fuel Cell Flow

Yu,

Lu,

Jia

et al. 2024

Preprint

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“…Some of them are the operational circumstances [7], flow channel design [8], fuel cell component size [9], material qualities, and operating conditions. The flow channel's design is crucial since it greatly affects how efficiently fuel cells function [10].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Geometric Properties of Fuel Cell Components

YAVUZ¹,

KAHRAMAN

2023

International Journal of Automotive Science and Technology

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Due to factors including low emission values, great energy efficiency, and reduced environmental contamination, fuel cells have gained popularity recently. Fuel cells using polymer electrolyte membranes can distribute reactant gases through gas flow channels and remove water that forms during the reaction from the fuel cell. This study looked at how different channel sizes and channel cross-section geometries (rectangular, triangular, and semicircular) affected the distribution of current density, oxygen concentration, velocity, and temperature parameters on the cathode catalyst in the flow channels of a single-channel PEM fuel cell at 0.75 V cell voltage. The model with the highest current density and consequently the best fuel cell performance was determined to be 9 x 10-5 A/cm2 in a channel with a height and breadth of 0.1 cm and A = 1 cm2, according to the data obtained. The flow channel length was assessed at 0.2 in the analysis results for all models because it did not alter with the oxygen concentration distribution. In varied channel designs with the same area, it has been found that the velocity distribution varies inversely with the current density. The maximum velocity value recorded at this location was 33.1 m/s in a semicircular canal with a R of 0.34 mm. It has been discovered that fuel cells from more places operate better as a result.

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Effect of variable parameters on delayed droplet icing process in proton exchange membrane fuel cell flow channel

Yu,

Lu,

Jia

et al. 2024

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Behavior of current distribution evolution under reactant starvation conditions based on a single polymer electrolyte membrane fuel cell (PEMFC) with triple-serpentine flow field: An experimental study

Cited by 28 publications

References 60 publications

Effect of Variable Parameters on Droplet Icing Process in Delayed Proton Exchange Membrane Fuel Cell Flow

Effect of Variable Parameters on Droplet Icing Process in Delayed Proton Exchange Membrane Fuel Cell Flow

Performance Analysis of Geometric Properties of Fuel Cell Components

Effect of variable parameters on delayed droplet icing process in proton exchange membrane fuel cell flow channel

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