Overview on Vapor Feed Direct Methanol Fuel Cell

Halim, F.A.; Hasran, Umi Azmah; Masdar, Mohd Shahbudin; Kamarudin, S.K.; Daud, Wan Ramli Wan

doi:10.1016/j.apcbee.2012.06.043

Cited by 12 publications

(4 citation statements)

References 26 publications

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“…Furthermore, Halim et al reported that the vapor-feed μDMFC has relatively lower methanol crossover compared to the liquid-feed μDMFC [8]. A vaporfeed μDMFC system can directly use a mixture of methanol and water vapor as fuel, decreasing the methanol crossover tremendously [9].…”

Section: Introductionmentioning

confidence: 98%

A Passive Vapor-Feed Direct Methanol Fuel Cell Based on a Composite Pervaporation Membrane

Wang

Liu

2015

J. Microelectromech. Syst.

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A passive micro direct methanol fuel cell (μDMFC) by using composite pervaporation membrane for vapor fuel supply without any extra power is presented. A simple and power free vaporizer, which consists of a polydimethylsiloxane (PDMS) active layer and a porous silicon support layer, is integrated with a μDMFC, converting the methanol from liquid phase to vapor phase. The novel anode vaporizer generates methanol vapor, which diffuses to and reacts with catalyst directly. The composite membranes with different parameters are prepared and tested to optimize the performance of the membrane vaporizer. The developed prototype exhibits a peak power density of 18.2 mW/cm 2 and a maximum fuel efficiency of 78.4% at room temperature. It is believed that the vapor-feed μDMFC will be more applicable for microsystems.[ 2014-0058]Index Terms-μDMFC, vapor-feed, composite pervaporation membrane, fuel efficiency.

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Section: Introductionmentioning

confidence: 98%

A Passive Vapor-Feed Direct Methanol Fuel Cell Based on a Composite Pervaporation Membrane

Wang

Liu

2015

J. Microelectromech. Syst.

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“…The increasing scarcity of fossil fuels has highlighted the need for alternative energy sources [1][2][3]. Fuel cells are regarded as a promising technology that can be utilized to address this issue.…”

Section: Introductionmentioning

confidence: 99%

Chitosan Membranes for Direct Methanol Fuel Cell Applications

Nemavhola,

Modau,

Sigwadi

et al. 2023

Preprint

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The purpose of this study is to identify the steps involved in fabricating silica/chitosan composite membranes and their suitability in fuel cell application. It also intends to identify the physical characteristics of chitosan composite membranes, including their degree of water absorption, proton conductivity, methanol permeability, and functional groups. In this investigation, composite membranes were fabricated using the solution casting method with chitosan content of 5 g and silica variations dosage of 2% and 4% while stirring at a constant speed for 2h. According to the findings, the analysis of composite membranes produced chitosan membranes that were successfully modified with silica. The optimum membrane was found to be 4% s-SiO2 from the Sol-gel method with composite membrane's optimal condition of 0.234 cm/s proton conductivity, water uptake of 56.21%, and reduced methanol permeability of 0.99 × 10 -7 cm2/s in the first 30 minutes and 3.31 × 10-7 in the last 150 minutes. Maintaining lower water uptake capacity at higher silica content is still a challenge that needs to be addressed. However, the fabricated membranes showed exceptional results in terms of proton conductivity and methanol permeability.

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“…The increasing scarcity of fossil fuels has highlighted the need for alternative energy sources [1][2][3]. Fossil fuels are not renewable, which makes them a threat to energy security.…”

Section: Introductionmentioning

confidence: 99%

Chitosan Membranes for Direct Methanol Fuel Cell Applications

Modau,

Sigwadi,

Mokrani

et al. 2023

Membranes

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The purpose of this study is to identify the steps involved in fabricating silica/chitosan composite membranes and their suitability for fuel cell applications. It also intends to identify the physical characteristics of chitosan composite membranes, including their degree of water absorption, proton conductivity, methanol permeability, and functional groups. In this investigation, composite membranes were fabricated using the solution casting method with a chitosan content of 5 g and silica dosage variations of 2% and 4% while stirring at a constant speed for 2 h. According to the findings, the analysis of composite membranes produced chitosan membranes that were successfully modified with silica. The optimum membrane was found to be 4% s-SiO2 from the Sol-gel method with the composite membrane’s optimal condition of 0.234 cm/s proton conductivity, water uptake of 56.21%, and reduced methanol permeability of 0.99 × 10−7 cm2/s in the first 30 min and 3.31 × 10−7 in the last 150 min. Maintaining lower water uptake capacity at higher silica content is still a challenge that needs to be addressed. In conclusion, the fabricated membranes showed exceptional results in terms of proton conductivity and methanol permeability.

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Overview on Vapor Feed Direct Methanol Fuel Cell

Cited by 12 publications

References 26 publications

A Passive Vapor-Feed Direct Methanol Fuel Cell Based on a Composite Pervaporation Membrane

A Passive Vapor-Feed Direct Methanol Fuel Cell Based on a Composite Pervaporation Membrane

Chitosan Membranes for Direct Methanol Fuel Cell Applications

Chitosan Membranes for Direct Methanol Fuel Cell Applications

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