Study of the two-phase dummy load shut-down strategy for proton exchange membrane fuel cells

Zhang, Q.; Lin, Rui; Cui, Xin; Xia, Sheng-Yuan; Yang, Zhengjin; Chang, Yafei

doi:10.1016/j.jpowsour.2016.11.098

Cited by 19 publications

(6 citation statements)

References 35 publications

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“…All the experiments in this work were performed using the Greenlight G60 fuel cell operating platform, and the EIS tests were performed by Gmary Interface 3000 which just as the group works before. 5,18,[24][25][26][27][28] The MEAs used in this work were produced by Wuhan WUT New Energy Co., Ltd. with an active surface area of 50 cm 2 , which is the same as the other work of the group before. 5,[24][25][26][27][28] To ensure that the stack was assembled appropriately, the high-frequency resistance (HFR) was measured by BT3563-01 Impedance Analyzer made by HIOKI, Japan.…”

Section: Setupmentioning

confidence: 99%

Parameter optimization of PEMFC stack under steady working condition using orthogonal experimental design

et al. 2018

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Summary Operating parameters have a huge impact on the output characteristics of a proton exchange membrane fuel cell stack. In this study, to optimize the performance of proton exchange membrane fuel cell stack, 4 sets of operating parameters, which include working temperature, cathode stoichiometric, relative humidity, and backpressure, were optimized by means of the orthogonal experimental design. The experiment was developed with the help of 4‐factor and 3‐level orthogonal table. Nine orthogonal experiments were performed, and the polarization curve, local current density distribution, and electrochemical impedance spectroscopy of each experiment were obtained. It is observed that cathode stoichiometric and working temperature have much stronger effects on the output voltage and output consistency of stack than that of relative humidity and backpressure. Using comprehensive equilibrium method, the optimized combination of each parameter was achieved as follows: the working temperature was 75°C, cathode stoichiometric was 2.5, relative humidity was 50%, and backpressure was 1 bar. The on‐site test result showed that when the cathode stoichiometric was low, and some part of the stack would be in a starvation condition and when the temperature was low, it might cause mass transfer problems.

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Section: Setupmentioning

confidence: 99%

Parameter optimization of PEMFC stack under steady working condition using orthogonal experimental design

et al. 2018

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“…The result shows that the dummy load can effectively reduce the duration of fuel/air interface, so that the reverse current effect is relieved. Zhang et al [22] propose an extension of Yang's method with a two-phase dummy load strategy. The first main load declined at a certain linear rate, accompanied by the consumption of residual oxygen in the cathode in order to avoid air starvation.…”

Section: Introductionmentioning

confidence: 99%

“…Both anode and cathode compartments are closed simultaneously so that they are no longer supplied with gas when the dummy load is connected. By adding this device, all residual amount of oxygen in the catalyst layer and gas diffusion layer are consumed quickly to limit the fuel/air interface as much as possible as explained in [22].…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of proton exchange membrane fuel cell in automotive applications

Pahon

Bouquain

Hissel

et al. 2021

Journal of Power Sources

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“…With the help of the segmented cell technology, the influences of SU/SD condition and the corresponding system strategies have already been investigated by Lin's laboratory , through current density distribution. Lin et al studied the effects of SU/SD condition on the current density distribution.…”

Section: Introductionmentioning

confidence: 99%

“…It led to the carbon corrosion and the performance decrease. Lin et al investigated the dummy load strategy for the shut‐down process. Results showed that after 900 SU/SD cycles, the voltage decline rate under 500 mA cm −2 was 3.33 μV cycle −1 , which confirmed that the dummy load strategy could effectively alleviate the decay of the PEMFC durability.…”

Section: Introductionmentioning

confidence: 99%

Comparison Between the Constant Dummy Load and Step Load Shut‐Down Strategy for PEMFCs

et al. 2018

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Carbon corrosion of catalyst layer (CL) caused by start‐up/shut‐down (SU/SD) conditions in proton exchange membrane fuel cells (PEMFCs) decreases the durability of the membrane electrode assembly (MEA). It is reported that the dummy load shut‐down strategy helps alleviating the carbon corrosion. In this paper, constant load strategy and step load strategy are applied during 900 SU/SD cycles each, to investigate the effects of different dummy load forms on the durability of PEMFC. Reversal current is observed during the last phase of 5 A constant loading process, while there is no reversal current during the step load strategy. The results obtained through polarization curves, cyclic voltammetry (CV) and scanning electron microscope (SEM) technologies, prove the step load strategy more efficient to alleviate the performance decay. Therefore, the step load strategy can improve the durability of PEMFC.

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Study of the two-phase dummy load shut-down strategy for proton exchange membrane fuel cells

Cited by 19 publications

References 35 publications

Parameter optimization of PEMFC stack under steady working condition using orthogonal experimental design

Parameter optimization of PEMFC stack under steady working condition using orthogonal experimental design

Performance analysis of proton exchange membrane fuel cell in automotive applications

Comparison Between the Constant Dummy Load and Step Load Shut‐Down Strategy for PEMFCs

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