Effect of design of multilayer electrodes in direct methanol fuel cells (DMFCs)

Ko, Johan; Kang, Kyung-Sik; Park, Sunghyun; Kim, Whangi; Lee, Soonho; Ju, Hyunchul

doi:10.1016/j.ijhydene.2013.04.069

Cited by 19 publications

(3 citation statements)

References 16 publications

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“…A study on the effects of MPL design in a DMFC indicated that anode MPL decreases the methanol concentration and liquid saturation in the anode CL. Cathode MPL improves the water back-flow from the cathode to the anode and Hydrophobic anode CL improves the water back-flow from the cathode to anode [204]. A study on the effect of porosity of the copper-fibre sintered felt (CFSF) demonstrated that GDL with a super-hydrophobic pattern that has a porosity of 60% attains the best performance compared to those of 50% and 70% porous, since it facilitates water removal when the water balance coefficient (WBC) is high [205].…”

Section: Mitigation Strategies Of Gdl Degradationmentioning

confidence: 99%

“…Sustainability 2021, 13, x FOR PEER REVIEW 18 of 28 back-flow from the cathode to anode [204]. A study on the effect of porosity of the copperfibre sintered felt (CFSF) demonstrated that GDL with a super-hydrophobic pattern that has a porosity of 60% attains the best performance compared to those of )% and 80% porous, since it facilitates water removal when the water balance coefficient (WBC) is high [205].…”

Section: Influence Of Water Flooding In Mea Degradationmentioning

confidence: 99%

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A Critical Assessment on Functional Attributes and Degradation Mechanism of Membrane Electrode Assembly Components in Direct Methanol Fuel Cells

2021

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Direct methanol fuel cells (DMFC) are typically a subset of polymer electrolyte membrane fuel cells (PEMFC) that possess benefits such as fuel flexibility, reduction in plant balance, and benign operation. Due to their benefits, DMFCs could play a substantial role in the future, specifically in replacing Li-ion batteries for portable and military applications. However, the critical concern with DMFCs is the degradation and inadequate reliability that affect the overall value chain and can potentially impede the commercialization of DMFCs. As a consequence, a reliability assessment can provide more insight into a DMFC component’s attributes. The membrane electrode assembly (MEA) is the integral component of the DMFC stack. A comprehensive understanding of its functional attributes and degradation mechanism plays a significant role in its commercialization. The methanol crossover through the membrane, carbon monoxide poisoning, high anode polarization by methanol oxidation, and operating parameters such as temperature, humidity, and others are significant contributions to MEA degradation. In addition, inadequate reliability of the MEA impacts the failure mechanism of DMFC, resulting in poor efficiency. Consequently, this paper provides a comprehensive assessment of several factors leading to the MEA degradation mechanism in order to develop a holistic understanding.

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Section: Mitigation Strategies Of Gdl Degradationmentioning

confidence: 99%

Section: Influence Of Water Flooding In Mea Degradationmentioning

confidence: 99%

A Critical Assessment on Functional Attributes and Degradation Mechanism of Membrane Electrode Assembly Components in Direct Methanol Fuel Cells

2021

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“…The dynamics of the catalyst layer and membrane electrode assembly (MEA) of the fuel cell are considerably more complex than usually envisioned. In the fabrication of the MEA, variables pertaining to the catalyst layer such as the hot pressing temperature and pressure , the catalyst percentage and loading , catalyst ink pretreatment , ionomer content , pore size and structure , and multilayer design can greatly affect the overall performance of the fuel cell. These factors are not accounted for in the half‐cell electrochemical tests.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Cathode Catalyst Layer Thickness on the Performance in Direct Methanol Fuel Cells

Glass

Prakash

2019

Electroanalysis

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Catalyst deposition control is one of the overlooked areas of fuel cell fabrication and research that can affect the overall performance and cost of the fuel cell to manufacture for mass production. The effect of the different individual catalyst layer thicknesses and loadings of the cathode compartment of a direct methanol fuel cell (DMFC) was investigated. The drawdown method was performed at thicknesses varying from 1 mil to 8 mils with platinum loadings ranging from 0.25 mg cm−2 to 2.0 mg cm−2. The membrane electrode assemblies (MEAs) with thicker individual layers (8 mil and 4 mil) performed better overall compared to the ones prepared with thinner individual layers (1 mil). The power density maxima for the different loading levels followed an exponential decrease of platinum utilization at the higher loading levels. The painted MEAs tended to display the similar performance characteristics as the drawdown MEA layers closest to the thickness at the respective loadings.

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Multi-objective optimization on multi-layer configuration of cathode electrode for polymer electrolyte fuel cells via computational-intelligence-aided design and engineering framework

Chen

Peng

2016

Applied Soft Computing

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Effect of design of multilayer electrodes in direct methanol fuel cells (DMFCs)

Cited by 19 publications

References 16 publications

A Critical Assessment on Functional Attributes and Degradation Mechanism of Membrane Electrode Assembly Components in Direct Methanol Fuel Cells

A Critical Assessment on Functional Attributes and Degradation Mechanism of Membrane Electrode Assembly Components in Direct Methanol Fuel Cells

Effect of the Cathode Catalyst Layer Thickness on the Performance in Direct Methanol Fuel Cells

Multi-objective optimization on multi-layer configuration of cathode electrode for polymer electrolyte fuel cells via computational-intelligence-aided design and engineering framework

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