The influence of baffle geometry on mass transfer and performance of proton exchange membrane fuel cells considering the compression of gas diffusion layer

Huang, Jia‐Qi; Xiao, Helin; Hu, Jitao; Mu, Ruoyu; Chen, Zhuo

doi:10.1016/j.ijhydene.2022.04.157

Cited by 7 publications

(3 citation statements)

References 58 publications

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“…This size can be altered by increasing the hydrophilicity and aerophobicity of the surface, which will reduce the contact surface of the GDL bubble, thus decreasing the contact angle of the gas bubble and ultimately lowering the adhesion force between the bubble and the surface [56]. This allows bubbles to rapidly detach and increases the product flow rate, as illustrated in Figure 6.…”

Section: Gdlmentioning

confidence: 99%

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A Review of Membrane Electrode Assemblies for the Anion Exchange Membrane Water Electrolyser: Perspective on Activity and Stability

Ferriday,

Sampathkumar,

Middleton

et al. 2024

International Journal of Energy Research

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The performance of a water electrolyser (WE) depends on several aspects, many of which are located in the powerhouse of the cell, namely, the membrane electrode assembly (MEA). The anion exchange membrane WE (AEMWE) is a promising technology; however, both activity and stability must be further developed to surpass the current dominant WE technologies. Herein, we review aspects related to MEA development for anion exchange membrane water electrolysers, covering materials and techniques from the perspective of stability and activity. The gas diffusion layer (GDL) and the microporous layer (MPL) are often combined into a single MEA component, which places great importance on its composition. This composite layer has the greatest impact of any single component on cell performance, as the physical architecture of the GDL/MPL influences the overpotential related to activation, ohmic, and mass transport. The purpose of this review is to serve as an executive summary of the literature related to MEAs for AEMWEs for researchers and industry professionals who seek to further the state of the art.

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Section: Gdlmentioning

confidence: 99%

“…MT overpotential was reduced by 84.9% and 86.1% at 0.5 and 1.0 A cm -2 relative to traditional nickel foam. This drastic improvement in fluid handling contributed to lowering the overpotential by 71 mV at 2.0 A cm -2 [56].…”

Section: Gdlmentioning

confidence: 99%

A Review of Membrane Electrode Assemblies for the Anion Exchange Membrane Water Electrolyser: Perspective on Activity and Stability

Ferriday,

Sampathkumar,

Middleton

et al. 2024

International Journal of Energy Research

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show abstract

“…The GDL is a key component to the fuel cell performance, which plays a dual-transportation function of the supply fuel and water removal. When the GDLs are compressed by the assembly force, their small porosity under the ribs of the BPP will affect the electrochemical reaction rate by affecting the diffusion of hydrogen and oxygen concentration to the CLs, especially at a high current density, where the required reactive gases concentration is relatively higher [17,18].…”

Section: Introduction 1the Need For the Performance Parameter Matchin...mentioning

confidence: 99%

An Effective Force-Temperature-Humidity Coupled Modeling for PEMFC Performance Parameter Matching by Using CFD and FEA Co-Simulation

Zhang

et al. 2022

Sustainability

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High-performance proton exchange membrane fuel cell (PEMFC) vehicles are important for realizing carbon neutrality in transportation. However, the optimal power density of the fuel cell performance is difficult to achieve due to the internal complex operating conditions of a fuel cell stack. Moreover, there is a lack of effective models to solve the coupled multi-physical fields (force, temperature and humidity, etc.) in the PEMFC, particularly considering the gas diffusion layer (GDL) compression. Thus, a force-temperature-humidity coupled modeling method is introduced to evaluate the effects of key operating conditions for the fuel cell performance parameter matching. Firstly, the interfacial contact resistance and GDL porosity are obtained by a force-temperature coupled simulation using a finite element analysis (FEA) modeling, then the obtained results are introduced into a temperature-humidity coupled simulation using a computational fluid dynamics (CFD) modeling. An iteration algorithm is proposed to realize the force-temperature-humidity coupled simulation for the PEMFC performance. The main characteristics of the PEMFC performance parameters are revealed and the optimum matching criteria of the main performance parameters (temperature, stoichiometric ratio and relative humidity) are determined. The presented co-simulation method is significant and effective for realizing the PEMFC performance parameter matching condition, and it provides a design direction for an optimal power density of a fuel cell stack.

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Optimization of variable cross-sectional flow channel parameters for fuel cells: Numerical analysis and distributional uniformity evaluation

Yin,

Chen,

et al. 2024

Applied Thermal Engineering

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The influence of baffle geometry on mass transfer and performance of proton exchange membrane fuel cells considering the compression of gas diffusion layer

Cited by 7 publications

References 58 publications

A Review of Membrane Electrode Assemblies for the Anion Exchange Membrane Water Electrolyser: Perspective on Activity and Stability

A Review of Membrane Electrode Assemblies for the Anion Exchange Membrane Water Electrolyser: Perspective on Activity and Stability

An Effective Force-Temperature-Humidity Coupled Modeling for PEMFC Performance Parameter Matching by Using CFD and FEA Co-Simulation

Optimization of variable cross-sectional flow channel parameters for fuel cells: Numerical analysis and distributional uniformity evaluation

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