Temperature control strategy for polymer electrolyte fuel cells

Qi, Yiwen; Li, Xiufei; Li, Shian; Li, Tingshuai; Espinoza‐Andaluz, Mayken; Tunestål, Per; Andersson, Martin

doi:10.1002/er.5209

Cited by 14 publications

(9 citation statements)

References 37 publications

(83 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The performance of PEFC is determined by the local current density or the oxygen reduction reaction (ORR) rate. Extensive studies have been carried out on explorations of the effects of factors such as temperature, 1 total pressure, 2 oxygen partial pressure, 3 relative humidity (RH) 4 on the ORR rate as well as the mass transfer resistance. However, these parameters have distributions either in a stack and in a single cell, and they are dependent on each other.…”

Section: List Of Symbolsmentioning

confidence: 99%

Effects of Gas Macromixing in Polymer Electrolyte Fuel Cell

Kageyama

Kawase

2023

J. Electrochem. Soc.

View full text Add to dashboard Cite

For PEFCs’ grand-scale commercialization, their performance should be further improved. The performance of PEFCs is the result of the distributions of local current density and materials concentration, especially oxygen and water. In addition, the in-plane transport of reactant gas in the gas diffusion layer, which is difficult to measure, affects the distribution of oxygen partial pressure and relative humidity by mixing the gas with different residence time. In this study, the PEFC was regarded as a reactor, the gas macromixing in which was evaluated by residence time distribution in the perspective of chemical engineering. The cell performance with different active area and gas flow rate in parallel and serpentine gas channels was measured experimentally and predicted by the compartment models. According to the model, the gas macromixing in the 1-mm-manifold parallel channel is more obvious than that in the serpentine model, and has better performance at low oxygen conversion, since appropriate water humidification is beneficial to the cell performance. The results also indicate that the gas macromixing should be promoted to improve the water humidification and the cell performance at low oxygen conversion. The computationally inexpensive compartment model is potentially applicable for system simulator and design procedure.

show abstract

Section: List Of Symbolsmentioning

confidence: 99%

Effects of Gas Macromixing in Polymer Electrolyte Fuel Cell

Kageyama

Kawase

2023

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…Governing equations applied to calculate the velocity and pressure fields are expressed by Eqs. [1] and [2] Mass conservation:…”

Section: Cfd Simulationmentioning

confidence: 99%

“…The performance of PEFC is determined by the local current density or the oxygen reduction reaction (ORR) rate. Extensive studies have been carried out on explorations of the effect of factors such as temperature (1), total pressure (2), oxygen partial pressure (3), relative humidity (RH) (4) on the ORR rate as well as mass transfer rate. However, these parameters have distributions even in a single cell, and they may be dependent on each other, so that the effects of a single factor in the cell are complicated and uneasy to be clarified.…”

Section: Introductionmentioning

confidence: 99%

Performance of PEFC Under Different Gas-Mixing Conditions

Ma¹,

Kageyama²,

Kawase³

2021

ECS Trans.

View full text Add to dashboard Cite

For PEFCs' grand-scale commercialization, their performance should be further improved. The performance of PEFC is the results of the distribution of local current density and materials concentration, especially oxygen and water. In addition, the in-plane transport of reactant gas in the gas diffusion layer (GDL), which is difficult to measure, affects the distribution of oxygen partial pressure and relative humidity (RH) by mixing the gas with different residence time. In this study, the distribution of local current density as well as oxygen partial pressure and RH was estimated by varying active area and gas flow rate. Furthermore, two kinds of different gas channels, parallel and serpentine, were utilized to estimate the effect of gas mixing in the GDL. The concept of space time was used to discuss the effects of gas mixing in the perspective of chemical engineering. The results may provide a theory basis for a cell design procedure.

show abstract

“…Their efficiency depends largely on the specific cell arrangement, the chemical composition, structure, morphology and size of the incorporated materials as well as the efficient charge collection at the corresponding nanostructured interfaces. Recent advances focus on our ultimate goals to provide additional data on the devices lifetime and to ensure their enhanced stability for real‐world applications 18‐42 …”

Section: Introductionmentioning

confidence: 99%

Energy efficiency improvement of water pumping system using synchronous reluctance motor fed by perovskite solar cells

et al. 2020

View full text Add to dashboard Cite

Perovskite solar cells (PSCs) are in the forefront of third-generation of photovoltaics and gained a lot of attention as a very promising green technology toward direct solar energy conversion to electricity. PSCs are fabricated following solution-processed techniques at low temperature and they present high power conversion efficiency exceeding 25%, enabling them to be attractive alternative to the silicon-based devices. This research work proposes an efficient and cost-effective photovoltaic (PV) pumping system based on PSCs. For this purpose, lab-scale PSCs were fabricated and their characteristics were determined. In parallel, the geometry of a synchronous reluctance motor (SynRM) driving a 350 m 3 /day water pump was optimized for maximizing the output power, while minimizing the torque ripple simultaneously. In addition, a perovskite solar array feeding the SynRM via an inverter was designed and implemented. The inverter was properly regulated by a control system which optimized the maximum available power of the PSCs solar array and the SynRM characteristics. Finally, laboratory measurements were performed, including a power generator simulating the behavior of the PSCs array feeding the SynRM. The obtained results confirmed the experimental validation of the proposed approach.

show abstract

Temperature control strategy for polymer electrolyte fuel cells

Cited by 14 publications

References 37 publications

Effects of Gas Macromixing in Polymer Electrolyte Fuel Cell

Effects of Gas Macromixing in Polymer Electrolyte Fuel Cell

Performance of PEFC Under Different Gas-Mixing Conditions

Energy efficiency improvement of water pumping system using synchronous reluctance motor fed by perovskite solar cells

Contact Info

Product

Resources

About