Mass transfer and performance of membrane-less micro fuel cell: A review

Nasharudin, M.N.; Kamarudin, S.K.; Hasran, Umi Azmah; Masdar, Mohd Shahbudin

doi:10.1016/j.ijhydene.2013.09.135

Cited by 73 publications

(39 citation statements)

References 87 publications

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“…; (21) here, i is the charge transfer current density, i 0 is the exchange current density, α is the charge transfer coefficient, and η is the overpotential. The subscripts 1 and 2 denote the anode and the cathode.…”

Section: Electrochemistrymentioning

confidence: 99%

“…9-11 A series of works were conducted to further improve this design with flow-through porous electrodes. 20,21 A study by Lee and Kjeang indicated that the contact resistance could be significantly reduced by increasing the contact area between the current collector and the porous electrode. 18,19 Despite the high power density feature of the porous flow-through MFC, high ohmic resistance and associated voltage loss were observed.…”

Section: Introductionmentioning

confidence: 99%

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Role of electrical resistance and geometry of porous electrodes in the performance of microfluidic fuel cells

Bei

Xü

et al. 2017

Int J Energy Res

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Summary Significant electrical resistance is observed in porous electrodes of microfluidic fuel cell due to the size limitation of this energy system. In this work, role of electrical resistance and geometry of porous electrodes in the performance of microfluidic fuel cells is studied with a three‐dimensional numerical model. Parametric simulations are performed to find proper ways to reduce the electrical resistance, including increasing the electrical conductivity of the electrode, changing the electrode geometry, and optimizing the current collector design. The results indicate that the cell cannot fully get rid of the negative influences of the electrical resistance by increasing the electrical conductivity due to the material restriction. Decreasing the electrode length or increasing the electrode width is also not feasible due to the trade‐off between current and current density. Optimization of the aspect ratio of the electrode active region is proved effective in realizing the enhancement of both current and current density. Extending the current collector area from the exposed end to the active region of the porous electrode is also promising as it can decrease the electrical resistance and boost the cell performance simultaneously. The present findings are generally applicable to various miniaturized fuel cell types using porous electrodes.

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Section: Electrochemistrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Role of electrical resistance and geometry of porous electrodes in the performance of microfluidic fuel cells

Bei

Xü

et al. 2017

Int J Energy Res

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“…On the other side, the electrical properties of fractal networks have attracted broad interests from both scientists and engineers. 15,16 The efficient electrical network systems embedded in transport systems have inspired the innovative design of artifacts 13 such as polymer electrolyte fuel cells 17 and batteries. 18 Nevertheless, the comprehensive understanding of the influence of pore structure on electrical performance of fractal network or porous media is absent.…”

Section: Introductionmentioning

confidence: 99%

The Evaluation of Electrical Impedance of Three-Dimensional Fractal Networks Embedded in a Cube

et al. 2017

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This paper presents a preliminary work to evaluate the electrical impedance of threedimensional pore fractal networks embedded in a cube. The construction and structural parameters of pore and electrical networks are illustrated in detailed. The total impedance response (modulus and phase) of networks is primarily associated with structural parameter of network, pore structure parameter of cube, conductivity of pore and solid phases. The impedance response of cube with the evolution of fractal network is analyzed comprehensively in this work. Besides, the influence of conductivity of pore phase caused by different types of electrolytes, electrical frequencies and conductivity of solid phase on the total impedance response is systematically studied.

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“…Following this first review, a variety of MFC systems have been reported based on different fuel-oxidant combinations [10][11][12], electrode materials [13][14][15][16][17][18][19], and micro-channel configurations [20][21][22][23][24][25][26][27]. Recent reviews summarized the work conducted in this field with respect to design considerations [28], critical limiting factors [29] and selection of electrode and catalyst materials [30] to boost the cell performance. Along with experimental results, computational modeling and theoretical simulations in this area also attracted a lot of attention [21,[31][32][33][34][35][36][37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Vanadium microfluidic fuel cell with novel multi-layer flow-through porous electrodes: Model, simulations and experiments

Nikiforidis

Leung

et al. 2016

Applied Energy

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Mass transfer and performance of membrane-less micro fuel cell: A review

Cited by 73 publications

References 87 publications

Role of electrical resistance and geometry of porous electrodes in the performance of microfluidic fuel cells

Role of electrical resistance and geometry of porous electrodes in the performance of microfluidic fuel cells

The Evaluation of Electrical Impedance of Three-Dimensional Fractal Networks Embedded in a Cube

Vanadium microfluidic fuel cell with novel multi-layer flow-through porous electrodes: Model, simulations and experiments

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