Electrooxidation study of NaBH4 in a membraneless microfluidic fuel cell with air breathing cathode for portable power application

Pramanik, Hiralal; Rathoure, Amit Kumar

doi:10.1016/j.ijhydene.2016.11.143

Cited by 23 publications

(13 citation statements)

References 31 publications

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“…The detailed conditions under that the fuel cells were measured are listed below. First, the OCV value of this membraneless DFFC exceeds that of most fuel cells, except those tested by Pramanik and Rathoure 11 and Liu et al, 12 in Figure 12. This trend occurs because the theoretical OCVs of the fuel cells in both studies 11,12 are as high as 1.64 and 2.826 V, respectively, for the particular reactants used.…”

Section: Resultsmentioning

confidence: 77%

“…First, the OCV value of this membraneless DFFC exceeds that of most fuel cells, except those tested by Pramanik and Rathoure 11 and Liu et al, 12 in Figure 12. This trend occurs because the theoretical OCVs of the fuel cells in both studies 11,12 are as high as 1.64 and 2.826 V, respectively, for the particular reactants used. However, the actual OCVs of most MFCs in Figure 12 are much lower than the theoretical OCVs, indicating a severe crossover effect and high mixed potential of such MFCs.…”

Section: Resultsmentioning

confidence: 77%

“…Since the electrolyte stream flows between the fuel and the cathode catalyst layer, the fuel molecules diffused into the electrolyte stream can be carried downstream 13 and then discharged, leading to negligible fuel crossover. Besides commonly used liquid fuels, such as formic acid, 2,3,5,9 methanol, 6,7 and alcohol, 10 there are still numerous chemicals that can be used as liquid fuel, such as the H 2 O 2 , 4 NaBO 3 ⋅4H 2 O, 8 NaBH 4 , 11 and HCOONa, 12 in acidic or alkaline media. Note that direct formate fuel cells (DFFCs) have recently attracted significant attention and are becoming an emerging energy technology, primarily because they use carbon-neutral fuel with low-cost electrocatalytic and membrane materials.…”

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confidence: 99%

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Effects of Nafion ionomer content on the performance of membraneless direct formate fuel cells

Shyu

Wang

2021

Energy Science & Engineering

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Direct liquid fuel cells (DLFCs) whose anode are fed with aqueous reactants are currently studied intensively because of their numerous advantages, such as instant recharging, ease of transport and storage, and high energy density, 1 in contrast with H 2 -fed PEMFCs. Although DLFCs use a polymer membrane to separate the anodic and cathodic reactions and transport the ion, fuel crossover from the anode to the cathode degrades the cell performance and remains a challenge. 1 Using a liquid electrolyte stream by DLFCs to replace the proton exchange membrane might be a promising architecture for DLFCs, 2-12 since the electrolyte flow between electrodes can prevent the fuel from approaching the cathode, enhance the ionic conductivity, and reduce

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Section: Resultsmentioning

confidence: 77%

Section: Resultsmentioning

confidence: 77%

mentioning

confidence: 99%

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Effects of Nafion ionomer content on the performance of membraneless direct formate fuel cells

Shyu

Wang

2021

Energy Science & Engineering

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“…[140] These are usually deposited on conductive carbon supports, such as graphite, graphene, [141] glassy carbon, [142] and carbon nanotubes. [76,111] To avoid aggregation and deformation, the amount of catalyst loading has to be carefully determined and controlled, [126] and surfactants are often added as they can attach to the surface of primary particles. Wet impregnation can also be used for 3D electrodes, where added problems such as securing the electrodes during rapid flow may arise.…”

Section: Machiningmentioning

confidence: 99%

Design of Electrochemical Microfluidic Detectors: A Review

Díaz-Real

Holm

2021

Adv Materials Technologies

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Miniaturized electrochemical systems integrated into microfluidic flow devices have been an active research field the last couple of decades. This has resulted in many advanced microfluidic platforms for the conversion and detection of chemicals. The development is partly driven by the increased access to and decreased cost of fabrication. In the design of microfluidic electrochemical cells, several aspects need to be handled, such as the accurate control of potential, electrolyte flow, pH, pressure, and temperature. This can be further complicated by integrating photon traffic for spectro(electro)chemical detection. Here, a comprehensive review of recent advances and approaches to the design of microfluidic flow devices for detection is presented, first dealing with the design of electrodes and flow pathways, then highlighting some common challenges and how these have been dealt with in the literature. This work aims to be a guide for researchers in the design of microfluidic electrochemical systems for detection of chemical species.

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“…Desmaele et al utilized a cantilevered porous electrode with a T‐shaped channel for a membrane‐less fuel cell, resulting in a power density of 13.8 ± 0.06 μW cm −2 under a 50 μLmin −1 flow rate. On the other hand, Pramanik et al studied the electrooxidation in a membrane‐less fuel cell system for an open air cathode in a T‐shaped geometrical channel. The electrodes were positioned at the bottom walls of the system, resulting in a power density of 24.09 mW cm −2 at a temperature of 70°C.…”

Section: Design Of Membrane‐less Fuel Cellsmentioning

confidence: 99%

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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Electrooxidation study of NaBH4 in a membraneless microfluidic fuel cell with air breathing cathode for portable power application

Cited by 23 publications

References 31 publications

Effects of Nafion ionomer content on the performance of membraneless direct formate fuel cells

Effects of Nafion ionomer content on the performance of membraneless direct formate fuel cells

Design of Electrochemical Microfluidic Detectors: A Review

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

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