Design, fabrication and performance of a mixed-reactant membraneless micro direct methanol fuel cell stack

Abrego-Martínez, J.C.; Moreno-Zuria, A.; Cuevas-Muñiz, F.M.; Arriaga, L.G.; Sun, Shuhui; Mohamedi, Mohamed

doi:10.1016/j.jpowsour.2017.10.026

Cited by 32 publications

(24 citation statements)

References 59 publications

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“…Jayashree et al utilize the CNC micro milling system to fabricate the 2 mm of polymethylmethacrylate (PMMA) as a flow channel. The anode and cathode endplates that are thicker than the channel flow commonly used CNC for machining . The microchannel of the system used a Silhouette cutting plotter because the material used was RTV Rubber Base Silicones and Rubber Silicones RTV Curing Agent with 200 μm of thickness.…”

Section: Working Principle and Fabrication Methods Of Membrane‐less Fmentioning

confidence: 99%

“…A circular staking membrane‐less vapor DMFC was developed by Wang et al At 60°C and 3 M of KOH, the power density generated by the system was able to reach 108.7 mW cm −2 . Then, the research focused on the mixed reactant in a micro DMFC stack . The Ag/Pt/CP cathode combined with Pt in an alkaline medium was adopted in this study.…”

Section: Power Generation In Membrane‐less Fuel Cellsmentioning

confidence: 99%

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Membrane‐less micro fuel cell system design and performance: An overview

et al. 2019

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Researchers interest in using fuel cells as a power source has grown because fuel cells are environmentally friendly. However, fuel cells still present challenges due to their performance and cost. This limits the commercialization of fuel cell systems, particularly in liquid fuel cells. One of the major obstacles is the Nafion membrane. The Nafion membrane is extremely expensive and causes the "fuel crossover phenomenon." Therefore, researchers have proposed a membrane-less fuel cell that eliminates the need of a membrane in the system mainly in micro fuel cells. Membrane-less fuel cell has shown an improvement on power density by approximately 12% compared with conventional type of proton electrolyte membrane fuel cell. However, there still a lack of information on system design and performance. Therefore, the main objective of this review is to present an extensive study focusing on the geometrical system design and performance of a membrane-less fuel cell system. It also presents the different types of membrane-less fuel cell systems. Lastly, it highlights the current problems and potentials to improve the performance of the system. Finally, it is observed that the cost of a membrane fuel cell can be reduced by 20% to 40% compared with the conventional type of fuel cell. KEYWORDS flow field design, geometrical design, laminar-based fuel cell, membrane-less fuel cell, shape of channel, system design

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Section: Working Principle and Fabrication Methods Of Membrane‐less Fmentioning

confidence: 99%

Section: Power Generation In Membrane‐less Fuel Cellsmentioning

confidence: 99%

Membrane‐less micro fuel cell system design and performance: An overview

et al. 2019

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“…Cathode catalysts for alkaline and acid electrolytes in most cases also were made mainly of platinum and its alloys, PtAu [9] and PtPd [10], and Ag [11]. Catalysts based on Pt-Mn2O3 [12], Ag (AgO) [8], Ag-Pt [13][14][15] and Ag-Sn [16] are known too.…”

Section: Introductionmentioning

confidence: 99%

Study of electromotive force of a new type of membraneless fuel cell operating on renewable fuel

et al. 2020

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The possibility of using base metals and alloys based on them as electrodes for a new type of membraneless fuel cells operating on renewable fuel has been investigated. The phase boundary of two immiscible liquids in the ethanol-water-potassium hydroxide system plays a role of a membrane in these elements. Top phase of this fuel cell has significant alcohol content and insignificant electrolyte content, bottom phase has significant electrolyte content and insignificant alcohol content. Platinum-and rutheniumcoated titanium electrode, carbon electrode and stainless steel electrode were used as the anode. Stainless steel electrode and carbon steel electrode were used as the cathode. The possibility of using ferrous alloys as anode and cathode catalysts in this type of fuel cells is shown.

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“…Wang and Leung demonstrated a six‐cell stack with low‐cost aluminum fed directly to the stack for hydrogen generation on site . Abrego‐Martinez et al designed a two‐cell MFC stack that operated in mixed‐reactant mode and allowed to double the open‐circuit voltage with virtually no cost increase . Lee and Ahn proposed an MFC stack in which electrical connections in serial or parallel are made within one channel by using multiple laminar flow .…”

Section: Introductionmentioning

confidence: 99%

Design of a radial vanadium redox microfluidic fuel cell: A new way to break the size limitation

Bei

Liu

et al. 2019

Int J Energy Res

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Summary Microfluidic fuel cell (MFC) suffers from small single cell output power due to the inherent cell size limitation as microscale geometries are prerequisite to prevent reactant crossover between the anode and cathode. To meet the power demand of practical applications, previous works mainly focus on the creating of MFC stacks with multiple cells connected in series, parallel, or mixture of both series and parallel to increase the output power. Yet, low energy efficiency is observed because of the flow distribution nonuniformity and shunt current losses. In this work, a high performance radial vanadium redox MFC is presented to address the size limitation issue by adding a separate layer between the porous electrodes of the conventional plate‐frame MFC. Specific cell characteristics are detailed by mathematical modeling, and parametric studies are performed to evaluate the influences of the geometrical and operational parameters on the cell performance. The results show that this new radial MFC can provide a higher fuel utilization and meanwhile an improved cell performance under a fixed electrode size compared with the conventional plate‐frame MFC. Moreover, the electrode size limitation due to the reactant crossover between the anode and cathode is broken as the influences of the electrode size on the mixing region are greatly reduced. In the case with the electrode size equal to 18 mm × 18 mm, single cell output power of 0.35 mW with a fuel utilization of 53.33% is obtained under the reactant concentration of 2 mol L−1 and flow rate of 300 μL min−1.

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Design, fabrication and performance of a mixed-reactant membraneless micro direct methanol fuel cell stack

Cited by 32 publications

References 59 publications

Membrane‐less micro fuel cell system design and performance: An overview

Membrane‐less micro fuel cell system design and performance: An overview

Study of electromotive force of a new type of membraneless fuel cell operating on renewable fuel

Design of a radial vanadium redox microfluidic fuel cell: A new way to break the size limitation

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