Numerical study of the cathode electrode in the Microfluidic Fuel Cell using agglomerate model

Moein‐Jahromi, M.; Movahed, Saeid; Kermani, M.J.

doi:10.1016/j.jpowsour.2014.12.019

Cited by 19 publications

(5 citation statements)

References 17 publications

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“…mol m . 3 Regarding to this, mixing index increases. Figure 16 represents the effect of the inlet and outlet diameter on the mixing index at the given constant external electric field and particle diameter (E=100 ð/cm and d=60 μm).…”

Section: [ • ]mentioning

confidence: 93%

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A three-dimensional numerical investigation of an induced-charge electrokinetic micromixer equipped with fully polarizable particle

et al. 2020

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Improvement of the mixaing index of low Reynolds number flows in microdimensional devices is essential. This paper investigates the enhancement of the mixing index in a three-dimensional micromixer using an electrically conductive microparticle. The governing equations of the inducedcharged electrokinetics based on the thin electric double layer (EDL) assumption are numerically solved using the finite element-based COMSOL Multiphysics (Version 5.3a) software. The effects of various parameters on the mixing process were studied. These parameters include: particle size, chamber height size, position of the particle (initial and equilibrium condition), diameter of inlet and outlet and the Zeta potential distribution over the particle. The three-dimensional simulation improves the comparisons for shape of the chamber as compared with two-dimensional. Therefore, the effect of various shape microchamber (spherical, cylindrical and rectangular-cubic) was investigated. The results indicate that for achieving the perfect mixing index, it is necessary to place the conductive particle at the equilibrium condition. Also, present computational simulations show that the spherical chamber is the appropriate choice which can improve the mixing within the microchannel. Nomenclature Latina symbols REVISED

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Section: [ • ]mentioning

confidence: 93%

“…Lab-On-a-Chip (LOC) and microfluidics are the most fast-growing fields in science and technology. This fields provide a wide range of applications in chemical and biomedical sciences, such as, biosensors, drug delivery systems, microreactors, single molecule detection and manipulation [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

A three-dimensional numerical investigation of an induced-charge electrokinetic micromixer equipped with fully polarizable particle

et al. 2020

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“…The pores loaded with photocatalysts and the throats connected with two catalytic pores are considered to be hydrophilic. The gas pressure equals to atmospheric pressure and the liquid pressure is determined by the flowing electrolyte based on the Poiseuille equation [18]. More details of invasion percolation algorithm can be found in ref.…”

Section: Liquid Percolation In Gdlmentioning

confidence: 99%

Multi-phase and multi-species transport inside air-breathing photocathode of photocatalytic fuel cell

Zhang,

Yu,

Liu

et al. 2023

Preprint

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A deep understanding of the two-phase and multispecies transport coupled with photoelectrochemical oxygen reduction reaction is crucial for boosting a photocatalytic fuel cell with a photoanode and an airbreathing photocathode. Herein, a pore network model is developed for the air-breathing CuO photocathode employed in photocatalytic fuel cell to describe the twophase percolation and multi-species transport as well as their effect on the photocathode performance. The performance of the air-breathing photocathode is found to be greatly affected by the wettability-dependent liquid invasion into the gas diffusion layer. Increasing the proportion of hydrophilic pores/throats in the gas diffusion layer greatly lowers the photocathode performance because of more severe liquid invasion. Besides, the transport of active species, including the dissolved oxygen and photo-excited electron and hole, has a significant effect on the photocathode performance. The present work also provides a guidance for the optimal design of the air-breathing photocathode.

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“…The lab-on-a-chip (LOC) technology and microfluidic devices have been widely used in chemical and biomedical applications such as, biosensors, drug delivery systems, microreactors, and microfluidic fuel cells (MFCs). 1–3…”

Section: Introductionmentioning

confidence: 99%

Numerical study on the mixing quality of an electroosmotic micromixer under periodic potential

Jalili

Raad

Fallah

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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Improvement of the mixing quality of low Reynolds number flows in micro-dimensional devices is essential. This paper investigates the optimization of the effective parameters and their effects on the mixing quality in a two-dimensional active micromixer. The micromixer mixes fluids with different concentrations entering into a microchannel from different inlets by means of four microelectrodes placed on the walls of a mixing chamber. A time-dependent electric field is applied, and the resulting electroosmotic force perturbs the parallel streamlines in the otherwise highly ordered laminar flow. The governing equations are numerically solved using the finite element-based COMSOL Multiphysics (Version 5.2a) software. The electroosmotic actuated active micromixer was numerically studied for various values of inlet velocity, phase lag, frequency, and voltage amplitude. Once the optimum values of the effective parameters are obtained for the original micromixer, they are applied to the micromixers having different obstacle shape inside the mixing chamber. The results showed that the mixing quality strongly depends on the inlet velocity of the fluids, the electrodes phase lag, the frequency, and the voltage amplitude. In addition, the mixing quality does not depend on obstacle shape when the optimum values of these parameters were used.

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Numerical study of the cathode electrode in the Microfluidic Fuel Cell using agglomerate model

Cited by 19 publications

References 17 publications

A three-dimensional numerical investigation of an induced-charge electrokinetic micromixer equipped with fully polarizable particle

A three-dimensional numerical investigation of an induced-charge electrokinetic micromixer equipped with fully polarizable particle

Multi-phase and multi-species transport inside air-breathing photocathode of photocatalytic fuel cell

Numerical study on the mixing quality of an electroosmotic micromixer under periodic potential

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