A model for the liquid feed direct methanol fuel cell

Scott, Keith; Argyropoulos, P.; Sundmacher, Kai

doi:10.1016/s0022-0728(99)00359-9

Cited by 138 publications

(94 citation statements)

References 22 publications

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“…The kinetic parameters were selected from the paper of Shivhare et al [7]. As shown in Figure 2, the simulated polarisation curves were obtained by using two groups of thicknesses and specific areas of the catalyst layer selected from literatures [7,10,11,15,[21][22][23]27]. Figure 2 indicates that the simulated polarisation curves show good agreement with the experimental data at lower bulk concentration, lower operating temperature, and lower overpotential.…”

Section: Model Validationmentioning

confidence: 70%

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Transient Response and Steady-State Analysis of the Anode of Direct Methanol Fuel Cells Based on Dual-Site Kinetics

Lü

Scott

Sun

2011

International Journal of Electrochemistry

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An intrinsic time-dependent one-dimensional (1D) model and a macro two-dimensional (2D) model for the anode of the direct methanol fuel cell (DMFC) are presented. The two models are based on the dual-site mechanism, which includes the coverage of intermediate species of methanol, OH, and CO (θ M , θ OH,Ru , and θ CO,Pt ) on the surface of Pt and Ru. The intrinsic 1D model focused on the analysis of the effects of operating temperature, methanol concentration, and overpotential on the transient response. The macro 2D model emphasises the dimensionless distributions of methanol concentration, overpotential and current density in the catalyst layer which were affected by physical parameters such as thickness, specific area, and operating conditions such as temperature, bulk methanol concentration, and overpotential. The models were developed and solved in the PDEs module of COMSOL Multiphysics, giving good agreement with experimental data. The dimensionless distributions of methanol concentration, overpotential, and current density and the efficiency factor were calculated quantitatively. The models can be used to give accurate simulations for the polarisations of methanol fuel cell.

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Section: Model Validationmentioning

confidence: 70%

“…It was possible for nucleation of carbon dioxide to take place in diffusion layer or limited to a partial region of the catalyst layer by choosing appropriate operating condition [21,22].…”

Section: Mathematical Modelmentioning

confidence: 99%

Transient Response and Steady-State Analysis of the Anode of Direct Methanol Fuel Cells Based on Dual-Site Kinetics

Lü

Scott

Sun

2011

International Journal of Electrochemistry

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“…Since the membranes are basically identical, the same can be said of the membrane models [121,174,[235][236][237][238][239][240][241][242][243]. A benefit of DMFCs is that liquid water exists on both sides of the membrane (in most cases at high enough current densities), and thus it remains liquidequilibrated throughout.…”

Section: Direct-methanol Fuel Cellsmentioning

confidence: 99%

Macroscopic Modeling of Polymer-Electrolyte Membranes

Weber

Newman

2007

Advances in Fuel Cells

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“…A few papers have reported the studies of the CO2 evolution and flow behavior in the anode flow field of DMFCs [6][7][8][9][10][11][12]. Scott et al [7,8] visually investigated the CO2 gas bubble behavior with flow beds based on stainless steel mesh.…”

Section: Introductionmentioning

confidence: 99%

“…Scott et al [7,8] visually investigated the CO2 gas bubble behavior with flow beds based on stainless steel mesh. Yang and Zhao [9,10] reported a visual study of CO2 bubbles behavior in a transparent DMFC with single serpentine flow fields and parallel flow fields.…”

Section: Introductionmentioning

confidence: 99%

Visual study of CO2 bubble behavior in anode flow field of direct methanol fuel cell at ambient temperature

Cao¹,

Gao²,

Meng³

2017

2nd Annual International Conference on Energy, Environmental &Amp; Sustainable Ecosystem Development (EESED 2016)

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This paper reports on a visual study of the CO2 bubble behavior in the anode flow field of a transparent Direct Methanol Fuel Cell (DMFC) with interdigitated flow field (IFF), working at ambient temperature. In the IFF, the quantity of CO2 bubbles increased with the increase of current densities. At low current densities, bubble flow appeared in the anode flow field and channel-blocking phenomenon caused by CO2 gas bubbles was found in the inlet channels; at moderate current densities, a number of gas slugs formed, and then bubbly flow and slug flow coexisted in the flow field; at high current densities, channel-blocking phenomenon also appeared in outlet channels. As the methanol flow rates increased, the amount of the CO2 bubbles decreased, enhancing the mass transport process of methanol and hence, improved the limiting current. However, higher methanol flow rate led to an increase of methanol crossover and to take away more heat. This eventually, resulted in a deterioration of cell performance.

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A model for the liquid feed direct methanol fuel cell

Cited by 138 publications

References 22 publications

Transient Response and Steady-State Analysis of the Anode of Direct Methanol Fuel Cells Based on Dual-Site Kinetics

Transient Response and Steady-State Analysis of the Anode of Direct Methanol Fuel Cells Based on Dual-Site Kinetics

Macroscopic Modeling of Polymer-Electrolyte Membranes

Visual study of CO2 bubble behavior in anode flow field of direct methanol fuel cell at ambient temperature

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