Temperature sensitivity characteristics of PEM fuel cell and output performance improvement based on optimal active temperature control

Tang, Xingwang; Zhang, Yujia; Xu, Shaonan

doi:10.1016/j.ijheatmasstransfer.2023.123966

Cited by 43 publications

(14 citation statements)

References 33 publications

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“…However, with a further increase in the content of the inorganic component, we observed a sharp decrease in the value of the proton conductivity. At a high nanoparticle concentration, nanoparticles fill channels more densely, and accordingly, a decrease in proton conductivity takes place due to a decrease in pore space [29][30][31][32]. It should also be noted that the introduction of silica nanoparticles leads to the transition of the geometric capacity from CPE q to classical capacity, which is evidenced by the P parameter (Table 3), which is equal to 1.…”

Section: Resultsmentioning

confidence: 96%

Modeling of Electrochemical Impedance of Fuel Cell Based on Novel Nanocomposite Membrane

Zhyhailo,

Yevchuk,

Ivashchyshyn

et al. 2024

Energies

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The new hybrid composite materials for PEM fuel cell were synthesized by the UV polymerization of acrylic monomers (acrylonitrile, acrylic acid, ethylene glycol dimethacrylate) and a sulfo aromatic monomer, i.e., sodium styrene sulfonate, and the tetraethoxysilane/3-methacryloxypropyltrimethoxysilane-based sol–gel system. By means of X-ray spectroscopy, the fractal structure of the obtained materials was characterized. Proton conductivity and viscoelasticity of the obtained materials were determined depending on the content of the inorganic component in nanocomposites. Based on impedance studies, an equivalent scheme is proposed that successfully describes the proton conductivity in the synthesized composite’s electrolyte membranes.

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Section: Resultsmentioning

confidence: 96%

Modeling of Electrochemical Impedance of Fuel Cell Based on Novel Nanocomposite Membrane

Zhyhailo,

Yevchuk,

Ivashchyshyn

et al. 2024

Energies

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“…More importantly, the TM atoms remain intact on the monolayer Nb 2 S 2 C even when subjected to AIMD simulations at an elevated temperature of 373 K (100 °C) as shown in Figure . Notably, the optimum operating temperature range for PEMC typically falls within 60–90 °C …”

Section: Resultsmentioning

confidence: 99%

Computational Screening of a Single-Atom Catalyst Supported by Monolayer Nb₂S₂C for Oxygen Reduction Reaction

Yeoh,

Chang,

Chew

et al. 2024

Langmuir

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The search for high-performance catalysts to improve the catalytic activity for an oxygen reduction reaction (ORR) is crucial for developing a proton exchange membrane fuel cell. Using the first-principles method, we have performed computational screening on a series of transition metal (TM) atoms embedded in monolayer Nb 2 S 2 C to enhance the ORR activity. Through the scaling relationship and volcano plot, our results reveal that the introduction of a single Ni or Rh atom through substitutional doping into monolayer Nb 2 S 2 C yields promising ORR catalysts with low overpotentials of 0.52 and 0.42 V, respectively. These doped atoms remain intact on the monolayer Nb 2 S 2 C even at elevated temperatures. Importantly, the catalytic activity of the Nb 2 S 2 C doped with a TM atom can be effectively correlated with an intrinsic descriptor, which can be computed based on the number of d orbital electrons and the electronegativity of TM and O atoms.

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“…Electrochemical impedance spectroscopy can be used to measure the effect of operation parameters, membrane resistance, interfacial kinetics of ORR and mass transport resistances on the fuel cell performance [30][31][32][33]. It delves into the microscopic electrochemical processes within the fuel cell by analyzing impedance across different frequencies, providing insights into resistance, capacitance, and electrochemical kinetics [34,35]. Lee et al [36] used EIS to measure the contribution of membrane resistance by analyzing high-frequency impedance behavior.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Proton Exchange Membrane Fuel Cell Performance by Exploring the Synergistic Effects of Reaction Parameters via Power Curve and Impedance Spectroscopy Analysis

Ustuner,

Hung,

Mahajan

2024

Energies

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In this paper, a comprehensive analysis of the parameters that affect polymer electrolyte membrane fuel-cell performance is presented. Experiments were conducted on a single fuel cell membrane with an active area of 5 cm2. To study the fuel cell operation, parametric studies of temperature, pressure and relative humidity values were conducted under cyclic voltammetry for impedance analysis. The impact of the behavior of all three parameters on the fuel-cell performance were recorded and analyzed. As the temperature increased from 50 °C to 74 °C, the Pt catalyst surface areas demonstrated lower activation losses as the membrane conductivity increased. It is confirmed that an increase in temperature accompanied higher humidity levels to provide sufficient cell hydration that resulted in a higher performance output. The impedance measurements indicate that low humidity levels resulted in higher cell resistance and mass transport losses. As the back pressure increased, the membrane resistance decreased, which also reduced mass transport losses. The results indicate that the important factors affecting the fuel cell performance are mass transport limitation and membrane resistance. Based on the results of this study, the optimum performance can be achieved by operating at higher pressures and temperatures with humidified reactant gases.

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Temperature sensitivity characteristics of PEM fuel cell and output performance improvement based on optimal active temperature control

Cited by 43 publications

References 33 publications

Modeling of Electrochemical Impedance of Fuel Cell Based on Novel Nanocomposite Membrane

Modeling of Electrochemical Impedance of Fuel Cell Based on Novel Nanocomposite Membrane

Computational Screening of a Single-Atom Catalyst Supported by Monolayer Nb₂S₂C for Oxygen Reduction Reaction

Investigation of Proton Exchange Membrane Fuel Cell Performance by Exploring the Synergistic Effects of Reaction Parameters via Power Curve and Impedance Spectroscopy Analysis

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Temperature sensitivity characteristics of PEM fuel cell and output performance improvement based on optimal active temperature control

Cited by 43 publications

References 33 publications

Modeling of Electrochemical Impedance of Fuel Cell Based on Novel Nanocomposite Membrane

Modeling of Electrochemical Impedance of Fuel Cell Based on Novel Nanocomposite Membrane

Computational Screening of a Single-Atom Catalyst Supported by Monolayer Nb2S2C for Oxygen Reduction Reaction

Investigation of Proton Exchange Membrane Fuel Cell Performance by Exploring the Synergistic Effects of Reaction Parameters via Power Curve and Impedance Spectroscopy Analysis

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Computational Screening of a Single-Atom Catalyst Supported by Monolayer Nb₂S₂C for Oxygen Reduction Reaction