Experimental studying of the effect of active area on the performance of passive direct methanol fuel cell

Hashemi, Ramin; Yousefi, Sasan; Faraji, Monireh

doi:10.1007/s11581-015-1479-y

Cited by 13 publications

(2 citation statements)

References 33 publications

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“…Hence, the experiment is aimed at various shapes and sizes of converter dynamic zones on the performance of the cell. Hashemi et al (2015), in their experimental study of the effect of the active area size and shape on the performance of cells, have observed methanol consumption over various active areas. The cell performance is increasing with the increase in the size of the active area.…”

Section: Literature Reviewmentioning

confidence: 99%

Experimental investigations on passive direct methanol fuel cell using variable membrane electrode assembly dynamic regions by altering gasket shapes

N.V.

2022

WJE

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Purpose The purpose of this paper is to investigate the performance of Passive Direct Methanol Fuel Cell (PDMFC) experimentally using various Membrane Electrode Assembly (MEA) shapes such as square, rectangle, rhombus, and circle with equal areas and equal perimeters. The variation in MEA shape/size is achieved by altering gasket openings in the dynamic regions. Design/methodology/approach In the equal areas of MEA shapes, gasket opening areas of 1963.5 (+/−0.2) mm2 are used. Whereas in the equal perimeters of shapes, gasket opening perimeters of 157.1 (+/−0.2) mm are used. In this experimentation, Nickel-201 current collectors with 45.3% of circular openings are used on both the anode and cathode sides. The experiment is carried out at a 5 molar methanol concentration to find out the highest power density of the cell. Findings In the equal areas, among the shapes that are chosen for investigation, the square shape opening consisting of a perimeter of 177.2 mm has developed a maximum power density of 6.344 mWcm−2 and a maximum current density of 65.2 mAcm−2. Similarly, in equal perimeters, the rhombus shape opening with an area of 1400 mm2 has developed a maximum power density of 7.714 mWcm−2 and a maximum current density of 85.3 mAcm−2. Originality/value The novelty of this research work is instead of fabricating various shapes and sizes of highly expensive MEAs, the desired shapes and sizes of the MEA are achieved by altering gasket openings over dynamic regions to find out the highest power density of the cell.

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Section: Literature Reviewmentioning

confidence: 99%

Experimental investigations on passive direct methanol fuel cell using variable membrane electrode assembly dynamic regions by altering gasket shapes

N.V.

2022

WJE

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“…In this context, platinum-based catalysts are the most used for ORR [1]. However, methanol crossover [2][3][4][5][6][7] from anode to cathode poisons the platinum-based catalysts, thereby affecting their ORR catalytic activity. Due to the high cost, scarcity, and poisoning issue, platinum-based catalysts need to be replaced with low-cost, methanoltolerant catalysts.…”

Section: Introductionmentioning

confidence: 99%

Carbon-supported Co(III) dimer for oxygen reduction reaction in alkaline medium

Sheelam

Mandal

Thippani

et al. 2016

Ionics

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Non-precious metal electrocatalysts obtained by pyrolysis of precursors of metal, nitrogen, and carbon (MNC) are viewed as an inexpensive replacement for platinum-based electrocatalysts for the oxygen reduction reaction (ORR) in fuel cells. The hypothesized ORR active site structure of typical MNC catalysts consists of a transition metal coordinated to the pyridinic/pyrollic type of nitrogen covalently attached to the edges of the graphitic crystallites. One of the drawbacks of all the reported procedures to synthesize these MNC electrocatalysts is the inability to control the formation of a specific active site structure suitable for ORR. Lack of clarity on the active site structure limits the researcher's ability to design a synthesis methodology that maximizes the specific active site density. In this study, we have synthesized a Co(III) dimer ([Co 2 (OH) 2 (OOCCH 3 ) 3 (bpy) 2 ] NO 3 ⋅ 1.5 H 2 O) and demonstrated its ORR activity in alkaline medium. The ORR activity and methanol tolerance property of the Co(III) dimer were compared with those of Ketjenblack carbon (used as support for Co(III) dimer) and commercial 20 wt% Pt/C, respectively. Since Co(III) dimer is a molecular material, its characterization by single-crystal X-ray diffraction, nuclear magnetic resonance, and infrared studies revealed the chemical structure unambiguously. Density functional theory calculation predicted the possibility of both end-on and side-on oxygen adsorption at the metal center of the Co(III) dimer.

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Performance evaluation of an air breathing–direct methanol fuel cell with different cathode current collectors with liquid electrolyte layer

Boni

Rao

Srinivasulu

2020

Asia-Pacific J Chem Eng

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Development of possible technologies for the generation of green energy is the focus of research worldwide. Fuel cells are a promising option in this regard. Out of the various categories of fuel cells, air breathing–direct methanol fuel cells (AB‐DMFCs) are finding a prominent place as an electric power source for charging of compact electronic devices. In AB‐DMFC, the design and construction of the cathode current collector is very crucial, since the cathode current collector performs important functions in the fuel cell operation such as collecting the electrons, facilitating the flow of oxygen for the cathode reaction and evacuating the water bubbles formed at the cathode side. An ideal current collector improves the cell performance multifold. The present paper deals about the performance of an AB‐DMFC fitted with three different cathode current collector designs, viz., a wire mesh current collector (WMCC) made of SS316L, WMCC with a supporting plate (SP) and a perforated current collector (PCC) with an open ratio of 45.40%. A single serpentine flow channel engraved on a graphite plate was used as the anode flow channel plate. Experimental investigations are carried out to examine the impact of the cathode current collector design on the performance of AB‐DMFC and also by varying the operating parameters of methanol flow rate and concentration. The next stage of the experiments are carried out with the addition of a liquid electrolyte layer (LE), which is kept between two half Membrane Electrode Assemblies. Experimental results reveal that the LE layer enhances the fuel cell performance compared to conventional AB‐DMFC.

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Experimental studying of the effect of active area on the performance of passive direct methanol fuel cell

Cited by 13 publications

References 33 publications

Experimental investigations on passive direct methanol fuel cell using variable membrane electrode assembly dynamic regions by altering gasket shapes

Experimental investigations on passive direct methanol fuel cell using variable membrane electrode assembly dynamic regions by altering gasket shapes

Carbon-supported Co(III) dimer for oxygen reduction reaction in alkaline medium

Performance evaluation of an air breathing–direct methanol fuel cell with different cathode current collectors with liquid electrolyte layer

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