Experimental investigation of a passive direct methanol fuel cell with 100cm2 active areas

Yousefi, Sasan; Ganji, D.D.

doi:10.1016/j.electacta.2012.08.045

Cited by 32 publications

(14 citation statements)

References 31 publications

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“…There are different types of fuel cell such as solid oxide (SOFC), direct liquid (DLFC), proton exchange membrane (PEMFC), molten carbonate (MCFC), and alkaline fuel cell (AFC) which is fueled with different fuels such as methanol, ethanol, and acids. Among all of these famous and recognized fuel cells, the direct methanol fuel cells (DMFCs) have received much attention because of their high theoretical energy density, low weight, compactness, easy recharging, simplicity, rapid start-up, using liquid fuel (methanol), being low pollution and green, and working under ambient conditions [3][4][5][6][7][8][9][10][11][12][13][14][15]. DMFC is an electrical power generator that uses methanol as a hydrogen source and convert the electrochemical energy into electrical energy directly by using aqueous or vaporized methanol as a fuel at the anode and air or pure oxygen as the oxidant at the cathode .…”

Section: Introductionmentioning

confidence: 99%

“…They provide a green, noiseless, and renewable means of producing power [1][2][3][4][5][6][7][8][9][10]. There are different types of fuel cell such as solid oxide (SOFC), direct liquid (DLFC), proton exchange membrane (PEMFC), molten carbonate (MCFC), and alkaline fuel cell (AFC) which is fueled with different fuels such as methanol, ethanol, and acids.…”

Section: Introductionmentioning

confidence: 99%

“…Based on fuel solution supply, DMFCs are classified into two major types, which are known as passive and active DMFCs [23][24][25][26][27][28][29][30][31][32][33][34][35]. The difference between these two types consists of pumping and delivering fuel to the reaction sites and electrical controls [3][4][5][6][7][8][9]. Contrary to active DMFCs, passive DMFCs do not have any ancillary devices such as pump or blower, so the parasitic energy and power losses, because of such external instruments, eliminate significantly.…”

Section: Introductionmentioning

confidence: 99%

“…Contrary to active DMFCs, passive DMFCs do not have any ancillary devices such as pump or blower, so the parasitic energy and power losses, because of such external instruments, eliminate significantly. In passive DMFC, the fuel supply relies on the diffusion from a built-in fuel reservoir, while ambient air supplies the required oxidant through natural convection [6]. Through these characteristics, the passive DMFCs have recognized as a promising power source for portable applications [3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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

Hashemi

Yousefi

Faraji

2015

Ionics

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This work experimentally studies the effect of the size and shape of active area on the performance of passive direct methanol fuel cell. The obtained results show that the cell performance strongly depends on the size and shape of active area. Experimental results of this study also demonstrate that the cell performance improves with an increase in the size of active area. Increasing the size of active area also leads to a lower internal resistance, lower OCV, and higher operating temperature. Furthermore, it was found that the smallest active area (4 cm 2 ) produced the longest stable discharging voltage (about 16.5 h). This study also reveals that the square active area has the best performance and the highest power density compared to the rectangular and circular active areas. Finally, the results prove that the place of applying the clamping force is an important parameter that should be considered in the cell design.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Hashemi

Yousefi

Faraji

2015

Ionics

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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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An overview of unsolved deficiencies of direct methanol fuel cell technology: factors and parameters affecting its widespread use

Kumar

Dutta

Das

et al. 2014

Int. J. Energy Res.

109

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SUMMARY Direct methanol fuel cells (DMFCs) have evolved over the years as a potential candidate for application as a power source in portable electronic devices and in transportation sectors. They have certain associated advantages, including high energy and power densities, ease of fuel storage and handling, ability to be fabricated with small size, minimum emission of pollutants, low cost, ready availability of fuel and solubility of fuel in aqueous electrolytes. However, in spite of several years of active research involved in the development of DMFC technology, their chemical‐to‐electrical energy conversion efficiencies are still lower compared with other alternative power sources traditionally used. This review paper will focus on the existing issues associated with DMFC technology and will also suggest on the possible developmental necessities required for this technology to realize its practical potentials. Copyright © 2014 John Wiley & Sons, Ltd.

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Experimental investigation of a passive direct methanol fuel cell with 100cm2 active areas

Cited by 32 publications

References 31 publications

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

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

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

An overview of unsolved deficiencies of direct methanol fuel cell technology: factors and parameters affecting its widespread use

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