Advances in the development of a hydrogen/oxygen PEM fuel cell stack

Tori, C. A.; Baleztena, M.; Peralta, C.; Calzada, Raul; Jorge, E.; Barsellini, Diego; Garaventta, Guillermo Norberto; Visintín, Arnaldo; Triaca, Walter Enrique

doi:10.1016/j.ijhydene.2007.12.026

Cited by 16 publications

(3 citation statements)

References 3 publications

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“…On the contrary, in fuel cell mode, the performance is lower than that recorded in a conventional PEM fuel cell equipped with Pt catalysts in particular in the ohmic and diffusion regions [27][28][29]. This is probably due to the presence of the hydrophobized Ti-grid as gas diffusion layer/ current collector.…”

Section: Resultsmentioning

confidence: 76%

Investigation of IrO₂/Pt Electrocatalysts in Unitized Regenerative Fuel Cells

Baglio

D’Urso

Blasi

et al. 2011

International Journal of Electrochemistry

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IrO2/Pt catalysts (at different concentrations) were synthesized by incipient wetness technique and characterized by XRD, XRF, and SEM. Water electrolysis/fuel cell performances were evaluated in a 5 cm2single cell under Unitized Regenerative Fuel Cell (URFC) configuration. The IrO2/Pt composition of 14/86 showed the highest performance for water electrolysis and the lowest one as fuel cell. It is derived that for fuel cell operation an excess of Pt favours the oxygen reduction process whereas IrO2promotes oxygen evolution. From the present results, it appears that the diffusion characteristics and the reaction rate in fuel cell mode are significantly lower than in the electrolyser mode. This requires the enhancement of the gas diffusion properties of the electrodes and the catalytic properties for cathode operation in fuel cells.

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Section: Resultsmentioning

confidence: 76%

Investigation of IrO₂/Pt Electrocatalysts in Unitized Regenerative Fuel Cells

Baglio

D’Urso

Blasi

et al. 2011

International Journal of Electrochemistry

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“…Figure 11 shows the performance of a DPFC predicted by the model at different operating temperatures. It also shows the performance of a hydrogen PEM fuel cell at 80 ∘ C [40] and that of a DPFC at 200 ∘ C having a phosphoric acid electrolyte [34]. As temperature is increased from 150 ∘ C to 230 ∘ C, the rate of reaction increases according to (7) and (10).…”

Section: Resultsmentioning

confidence: 99%

A Mathematical Model of a Direct Propane Fuel Cell

Khakdaman

Bourgault

Ternan

2015

Journal of Chemistry

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A rigorous mathematical model for direct propane fuel cells (DPFCs) was developed. Compared to previous models, it provides better values for the current density and the propane concentration at the exit from the anode. This is the first DPFC model to correctly account for proton transport based on the combination of the chemical potential gradient and the electrical potential gradient. The force per unit charge from the chemical potential gradient (concentration gradient) that pushes protons from the anode to the cathode is greater than that from the electrical potential gradient that pushes them in the opposite direction. By including the chemical potential gradient, we learn that the proton concentration gradient is really much different than that predicted using the previous models that neglected the chemical potential gradient. Also inclusion of the chemical potential gradient made this model the first one having an overpotential gradient (calculated from the electrical potential gradient) with the correct slope. That is important because the overpotential is exponentially related to the reaction rate (current density). The model described here provides a relationship between the conditions inside the fuel cell (proton concentration, overpotential) and its performance as measured externally by current density and propane concentration.

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“…Many research works have been conducted on these criteria on PEM fuel cell stack [1][2][3]. Tori C, et al reported the effect of cell number on polarization curve on PEM fuel cell [4]. Many research works had been reported for analytical, numerical and experimental work of direct methanol fuel cell [5][6][7], but DMFC technology has a long way to get in commercial market [8].…”

Section: Introductionmentioning

confidence: 99%

Design Criteria of a DMFC Stack with Low Scaling Effects

Shakeri

Imen

Delavar

2012

AMM

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In this paper, recent advances in design and fabrication of a direct methanol fuel cell (DMFC) stack are presented. DMFC fuel cells are viewed as one of the most environmentally friendly energy conversion system due to high theoretical electrical efficiency for portable application. These advantages are mainly depends on overall system design and especially on stack operating performance. In order to increase the performance of the overall system, design criteria of a DMFC stack has been considered. A DMFC stack with optimum flow field, flow direction, uniform pressure drop and flow distribution has been constructed. Scale effects respect to the number of cells are tested on single cell, short stack and stack by a homemade test bench. The results are shown the scale effect respect to the number of cells is ignorable.

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Advances in the development of a hydrogen/oxygen PEM fuel cell stack

Cited by 16 publications

References 3 publications

Investigation of IrO₂/Pt Electrocatalysts in Unitized Regenerative Fuel Cells

Investigation of IrO₂/Pt Electrocatalysts in Unitized Regenerative Fuel Cells

A Mathematical Model of a Direct Propane Fuel Cell

Design Criteria of a DMFC Stack with Low Scaling Effects

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Advances in the development of a hydrogen/oxygen PEM fuel cell stack

Cited by 16 publications

References 3 publications

Investigation of IrO2/Pt Electrocatalysts in Unitized Regenerative Fuel Cells

Investigation of IrO2/Pt Electrocatalysts in Unitized Regenerative Fuel Cells

A Mathematical Model of a Direct Propane Fuel Cell

Design Criteria of a DMFC Stack with Low Scaling Effects

Contact Info

Product

Resources

About

Investigation of IrO₂/Pt Electrocatalysts in Unitized Regenerative Fuel Cells

Investigation of IrO₂/Pt Electrocatalysts in Unitized Regenerative Fuel Cells