Air supply temperature impact on the PEMFC impedance

Laribi, Slimane; Mammar, Khaled; Sahli, Youcef; Koussa, Khaled

doi:10.1016/j.est.2018.03.020

Cited by 43 publications

(13 citation statements)

References 15 publications

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“…The polarization curves for catalysts with platinum content of 20 wt.% have close values of kinetic current density and activity up to 30 • C. The structure of the sample with the lowest tin dioxide content Pt 20 SnO 2 5 /C is mainly represented by individual highly dispersed Pt and SnO 2 particles, which participate as a co-catalyst in ORR. Thus, Pt 20 Table 2 shows the values of kinetic current and catalyst activity at various temperatures.…”

Section: Electrochemical Studiesmentioning

confidence: 86%

“…However, widening of the range of external operating conditions (temperature and humidity) involves a number of challenges. First, drying of the ionexchange polymer is observed at high temperatures and low humidity, which leads to a deterioration in proton conductivity both in the catalytic layer ionomer and in the membrane [3][4][5][6]. Second, at negative temperatures, ice crystals are formed inside MEA components, and destruction of the catalytic layers and membrane occurs during freezethaw cycles [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Carbon-Supported Pt-SnO2 Catalysts for Oxygen Reduction Reaction over a Wide Temperature Range: Rotating Disk Electrode Study

et al. 2021

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Pt/C and Pt/x-SnO2/C catalysts (where x is mass content of SnO2) were synthesized using a polyol method. Their kinetic properties towards oxygen reduction reaction were studied by a rotating disk electrode (RDE) technique in a temperature range from 1 to 50 °C. The SnO2 content of catalyst samples was 5 and 10 wt.%. A quick evaluation of the catalyst activity, electrochemical behavior and average number of transferred electrons were performed using the RDE technique. It has been shown that the use of x-SnO2 (through modification of the carbon support) in a binary system together with Pt does not reduce the catalyst activity in the temperature range of 1–30 °C. The temperature rising up to 50 °C resulted in composite catalyst activity reduction at about 30%.

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Section: Electrochemical Studiesmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Carbon-Supported Pt-SnO2 Catalysts for Oxygen Reduction Reaction over a Wide Temperature Range: Rotating Disk Electrode Study

et al. 2021

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“…Laribi et al [ 15 ] found that when the working temperature of the fuel cell rose from 60 to 140 °C, the resistance of the thin film rose with time, and the water content in the thin film decreased, so the ionic conductivity decreased.…”

Section: Introductionmentioning

confidence: 99%

Flexible 5-in-1 Microsensor Embedded in the Proton Battery for Real-Time Microscopic Diagnosis

Lee

Chen²,

Cheong

et al. 2021

Membranes

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The proton battery possesses water electrolysis, proton storage and discharging functions simultaneously, and it can be manufactured without expensive metals. Use the principle of proton exchange membrane water electrolysis for charging, store it in the activated carbon on the hydrogen side and use the principle of proton exchange membrane fuel cell for discharge when needed. According to the latest literature, it is difficult to obtain the exact important physical parameters inside the proton battery (e.g., voltage, current, temperature, humidity and flow), and the important physical parameters are correlated with each other, which have critical influence on the performance, lifetime and health status of the proton battery. At present, the condition of the proton battery is judged indirectly only by external measurement, the actual situation inside the proton battery cannot be obtained accurately and instantly. Therefore, this study uses micro-electro-mechanical systems (MEMS) technology to develop a flexible 5-in-1 microsensor, which is embedded in the proton battery to obtain five important physical parameters instantly, so that the condition inside the proton battery can be mastered more precisely, so as to prolong the battery life and enhance the proton battery performance.

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“…In addition, Laribi et al. optimized the impedance model of PEM fuel cell through a neural network, and the novel established model could diagnose the influence of the supply air temperature on the PEM fuel cell water management. Nevertheless, they only analyzed the effect of temperature from the perspective of impedance.…”

Section: Introductionmentioning

confidence: 99%

“…This model could effectively predict the steady-state and dynamic operation of two-phase flow under dynamic temperature, but they did not establish a mathematical model of dynamic temperature. In addition, Laribi et al [32] optimized the impedance model of PEM fuel cell through a neural network, and the novel established model could diagnose the influence of the supply air temperature on the PEM fuel cell water management. Nevertheless, they only analyzed the effect of temperature from the perspective of impedance.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Investigation of the Asymmetric Humidification and Dynamic Temperature in Proton Exchange Membrane Fuel Cell

et al. 2020

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The relative humidity is an important parameter reflecting the performance of proton exchange membrane (PEM) fuel cells, which is often accompanied by changes in heat and temperature. In order to study the different humidification effects on the performance of PEM fuel cells, a temperature and heat transfer (T&HT) model is presented. The innovation of this paper is to study the performance of fuel cell (FC) from the perspective of temperature heat transfer by asymmetric humidification. Firstly, symmetrical humidification experiments are performed at three operating temperatures. After that, a three‐dimensional (3D) structure is built using fluent and T&HT model is imported through custom functions. Secondly, the asymmetric humidification experiment is put into practice with 60 °C operating temperature. Furthermore, the Taguchi method is used to optimize the performance of fuel cells in the crossover experiment. Finally, the experimental and numerical results are compared by the contours and polarization curves. The results show that T&HT model is in agreement with the experiment, and asymmetric humidification is more reasonable and flexible than symmetrical humidification. When the cathode relative humidity is 50% and the anode relative humidity is 75%, the maximum optimization rate of system efficiency is 17%.

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Air supply temperature impact on the PEMFC impedance

Cited by 43 publications

References 15 publications

Carbon-Supported Pt-SnO2 Catalysts for Oxygen Reduction Reaction over a Wide Temperature Range: Rotating Disk Electrode Study

Carbon-Supported Pt-SnO2 Catalysts for Oxygen Reduction Reaction over a Wide Temperature Range: Rotating Disk Electrode Study

Flexible 5-in-1 Microsensor Embedded in the Proton Battery for Real-Time Microscopic Diagnosis

Numerical and Experimental Investigation of the Asymmetric Humidification and Dynamic Temperature in Proton Exchange Membrane Fuel Cell

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