Comprehensive study of an air bleeding technique on the performance of a proton-exchange membrane fuel cell subjected to CO poisoning

Sung, Lung-Yu; Hwang, Bing‐Joe; Hsueh, Kan‐Lin; Su, Wei‐Nien; Yang, Chang-Chung

doi:10.1016/j.jpowsour.2013.05.042

Cited by 40 publications

(22 citation statements)

References 40 publications

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“…et al [11] suggested 10 s non-continuous air bleeding as a technique to enhance recovery ratio of poisoned cell. A comprehensive experimental and numerical study was performed by Sung et al [12,13] which showed that by applying 5% air bleeding, the cell output current can be restored up to 90% within 10 min, even at high CO concentrations (200 ppm). It was also reported that excessive air bleeding (>10%) reduces the cell output power.…”

Section: Oxygen/air Bleedingmentioning

confidence: 99%

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Poisoning phenomenon and oxygen bleeding in dead-ended polymer electrolyte membrane fuel cells: A computational study using OpenFOAM ®

Hafttananian

Ramiar

Ranjbar

2016

International Journal of Hydrogen Energy

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Section: Oxygen/air Bleedingmentioning

confidence: 99%

“…II. Due to the reaction kinetics, excessive addition of oxygen or air to the reformed fuel not only does not improve the stack performance but also could lead to unwanted oxidation of H 2 [12,13,16].…”

Section: Oxygen/air Bleedingmentioning

confidence: 99%

Poisoning phenomenon and oxygen bleeding in dead-ended polymer electrolyte membrane fuel cells: A computational study using OpenFOAM ®

Hafttananian

Ramiar

Ranjbar

2016

International Journal of Hydrogen Energy

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“…The H2 fuel specifications, the standards ISO 14687-2:2012 and ISO/DIS 14687-3 (under development), outline the concentration limit for different impurities on a dry gas basis, so it is a common practice of PEMFC impurities research groups to do it accordingly [19,35,[37][38][39]. Concentrations in the wet gas basis vary by a constant factor depending on the relative humidity at the anode inlet of each test.…”

Section: Table 1 Details Of Experimental Conditionsmentioning

confidence: 99%

Effect of fuel utilization on the carbon monoxide poisoning dynamics of Polymer Electrolyte Membrane Fuel Cells

Pérez

Koski

Ihonen

et al. 2014

Journal of Power Sources

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The effect of fuel utilization on the poisoning dynamics by carbon monoxide (CO) is studied for future automotive conditions of Polymer Electrolyte Membrane Fuel Cells (PEMFC). Three fuel utilizations are used, 70%, 40% and 25%. CO is fed in a constant concentration mode of 1 ppm and in a constant molar flow rate mode (CO concentrations between 0.18 and 0.57 ppm). The concentrations are estimated on a dry gas basis. The CO concentration of the anode exhaust gas is analyzed using gas chromatography. CO is detected in the anode exhaust gas almost immediately after it is added to the inlet gas. Moreover, the CO concentration of the anode exhaust gas increases with the fuel utilization for both CO feed modes. It is demonstrated that the lower the fuel utilization, the higher the molar flow rate of CO at the anode outlet at early stages of the CO poisoning. These results suggest that the effect of CO in PEMFC systems with anode gas recirculation is determined by the dynamics of its accumulation in the recirculation loop. Consequently, accurate quantification of impurities limits in current fuel specification (ISO 14687-2:2012) should be determined using anode gas recirculation.

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“…Here, CO oxidation takes place directly on a fuel cell membrane as an oxidation catalyst. The method can recover up to 90% of the fuel cell performance at 200 ppm CO [20,21]. However, air-bleed was shown to cause long-term degradation of the membrane where O2 is reduced to H2O2 which corrodes the catalyst [22].…”

Section: Introductionmentioning

confidence: 99%

Dehydrogenation of Formic Acid over a Homogeneous Ru-TPPTS Catalyst: Unwanted CO Production and Its Successful Removal by PROX

Henricks

Yuranov²,

Autissier³

et al. 2017

Catalysts

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Formic acid (FA) is considered as a potential durable energy carrier. It contains~4.4 wt % of hydrogen (or 53 g/L) which can be catalytically released and converted to electricity using a proton exchange membrane (PEM) fuel cell. Although various catalysts have been reported to be very selective towards FA dehydrogenation (resulting in H 2 and CO 2 ), a side-production of CO and H 2 O (FA dehydration) should also be considered, because most PEM hydrogen fuel cells are poisoned by CO. In this research, a highly active aqueous catalytic system containing Ru(III) chloride and meta-trisulfonated triphenylphosphine (mTPPTS) as a ligand was applied for FA dehydrogenation in a continuous mode. CO concentration (8-70 ppm) in the resulting H 2 + CO 2 gas stream was measured using a wide range of reactor operating conditions. The CO concentration was found to be independent on the reactor temperature but increased with increasing FA feed. It was concluded that unwanted CO concentration in the H 2 + CO 2 gas stream was dependent on the current FA concentration in the reactor which was in turn dependent on the reaction design. Next, preferential oxidation (PROX) on a Pt/Al 2 O 3 catalyst was applied to remove CO traces from the H 2 + CO 2 stream. It was demonstrated that CO concentration in the stream could be reduced to a level tolerable for PEM fuel cells (~3 ppm).

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Comprehensive study of an air bleeding technique on the performance of a proton-exchange membrane fuel cell subjected to CO poisoning

Cited by 40 publications

References 40 publications

Poisoning phenomenon and oxygen bleeding in dead-ended polymer electrolyte membrane fuel cells: A computational study using OpenFOAM ®

Poisoning phenomenon and oxygen bleeding in dead-ended polymer electrolyte membrane fuel cells: A computational study using OpenFOAM ®

Effect of fuel utilization on the carbon monoxide poisoning dynamics of Polymer Electrolyte Membrane Fuel Cells

Dehydrogenation of Formic Acid over a Homogeneous Ru-TPPTS Catalyst: Unwanted CO Production and Its Successful Removal by PROX

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