Optimization of Flow Channels in a PEM Fuel Cell Based on a Multiobjective Evaluation

Jiang, Dong; Wang, Fangzhou; Li, Xianglin; Tan, Jianyu; Wang, Chenxia

doi:10.1021/acsomega.3c08298

Cited by 5 publications

(1 citation statement)

References 48 publications

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“…Due to the acceleration warming of global temperature, the development of low-carbon energy technologies has become a hot research topic. − Hydrogen energy has gained significant attention and is widely used as a clean intermediate medium. Advances in fuel cell technology have greatly promoted the utilization of hydrogen energy.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Effect of the Compensation Flow Fields on the Performance and Thermal Stress Distribution of a Typical Fuel Cell

Zhao,

Hu,

et al. 2024

ACS Omega

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The flow field design of the proton exchange membrane fuel cell (PEMFC) had a great impact on the performance and lifespan of the cell. To improve the uniformity of the substance component inside the PEMFC, referring to the serpentine flow field, a kind of compensating flow field is designed and investigated. Under the same conditions, the homogeneity of the two flow field structures is compared, and the influence of the homogeneity of two flow field distributions on the performance of the PEMFC is further analyzed. The polarization curve, maximum pressure difference at the inlet and outlet of the flow channel, and thermal stress generated by temperature gradients are used as performance indicators for evaluating the performance of the cell. The results show that after compensation, the distribution uniformity of each component in the flow field is improved, and the power density, water management, and thermal management capabilities are better than those in the traditional flow field design. Furthermore, the thermal performance of the single-layer cell and five-layer stack was compared. The results show that the more fuel cell layers, the greater the temperature difference within the cell, which will result in greater thermal stress. In the compensation flow field, the thermal stress of a single-layer unit is 14% lower than that of a serpentine flow field, and the thermal stress of a five-layer stack is 20% lower.

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Section: Introductionmentioning

confidence: 99%

Investigating the Effect of the Compensation Flow Fields on the Performance and Thermal Stress Distribution of a Typical Fuel Cell

Zhao,

Hu,

et al. 2024

ACS Omega

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Study on the Microflow Field Output Performance: Effects of Rib/Channel Dimensions and Sensitivity to Operating Conditions

Xu,

Lu,

Yang

2024

ACS Omega

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Rib/channel dimensions significantly affect mass transfer, product water discharge, and electron transport. Aiming for high-power density stacks, bipolar plate thickness has been continually reduced, and microflow fields with the width and height smaller than 1 mm currently lack thorough experimental study. In this article, three stainless-steel plates were designed and fabricated, featuring rib/channel widths of 0.2:0.8 mm (SS-0.2/ 0.8), 0.3:0.7 mm (SS-0.3/0.7), and 0.5:0.5 mm (SS-0.5/0.5). SS-0.5/0.5 gained a 59.05% peak power density enhancement over a graphite plate G1.0/1.0 with rib/channel widths of 1.0:1.0 mm. Furthermore, sensitivities of microflow fields to cathode inlet humidity (RHc), anode/cathode inlet pressures (P a /P c ), and cell operating temperature (T cell ) were investigated. The optimal performance was observed at a low RHc. When RHc increased to 60%, SS-0.5/0.5 was more likely to accumulate water under the rib when operating at a high current density, rapidly increasing the mass transport resistance. Microflow fields had a negligible sensitivity to P a /P c since decrease in channel width below 1 mm is sufficient for the favorable mass transfer. Increasing T cell showed a dominant impact on decreasing concentration loss via facilitating diffusion of reactant gases through the electrode surfaces and alleviating the liquid water accumulation due to an increase in the saturation vapor pressure of water.

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Economic Dispatch Strategy for Virtual Power Plants Based on Distributed Multi-Agent Algorithms

Jiang,

Wang,

Xue

2024

2024 3rd International Conference on Energy and Electrical Power Systems (ICEEPS)

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Optimization of Flow Channels in a PEM Fuel Cell Based on a Multiobjective Evaluation

Cited by 5 publications

References 48 publications

Investigating the Effect of the Compensation Flow Fields on the Performance and Thermal Stress Distribution of a Typical Fuel Cell

Investigating the Effect of the Compensation Flow Fields on the Performance and Thermal Stress Distribution of a Typical Fuel Cell

Study on the Microflow Field Output Performance: Effects of Rib/Channel Dimensions and Sensitivity to Operating Conditions

Economic Dispatch Strategy for Virtual Power Plants Based on Distributed Multi-Agent Algorithms

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