Effects of the Anode Diffusion Layer on the Performance of a Nonenzymatic Electrochemical Glucose Fuel Cell with a Proton Exchange Membrane

Cha, Hyeonjin; Kwon, Obeen; Kim, Jaeyeon; Choi, Heesoo; Yoo, Hongnyoung; Kim, Hyeok; Park, Taehyun

doi:10.1021/acsomega.1c05199

Cited by 6 publications

(11 citation statements)

References 66 publications

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“…Higher electrochemical reactions occur at high currents, resulting in more water generation, which must be pumped out of the fuel cell via a gas diffusion layer and a bipolar plate. As a result, if a blockage within the material prevents air from completely reacting to the redox reaction, the resulting voltage is greatly reduced . When comparing the characteristics of the hysteresis loop when using an in-house automatic flow controller versus a static flow controller that can control the constant flow rate, the in-house automatic flow controllers were discovered to have thinner loops across the current density range.…”

Section: Results and Discussionmentioning

confidence: 99%

Hydrogen Flow Controller Applied to Driving Behavior Observation of Hydrogen Fuel Cell Performance Test

2022

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Fuel cell performance tests for automotive applications include static and dynamic tests, and the dynamic load test is typically carried out to investigate the cell operating performance related to driving behavior in the particular use of fuel cell electric vehicles. The automatic hydrogen flow controller, utilized to regulate the hydrogen flow as a function of time, is one of the imperative apparatuses applied for the dynamic test. The driving behavior generally consists of rapid load fluctuations, several loads running at idle, full power, overload circumstances, start−stop repeats, and cold starting, and these dynamic variations are directly related to the power required for propelling a vehicle and the demand for hydrogen volume fluctuation throughout time. The desired automatic hydrogen flow controller was designed and manufactured for the dynamic performance test via the driving simulation protocol of a heavy-duty vehicle. The main experimental activities were performed to observe the responsibility and accuracy of the invented controller. The relation between the reliability of using the automatic hydrogen flow controller and the performance improvement of fuel cell operation was studied to gain ideas for further fuel cell modification. The hydrogen flow rates controlled by the created flow controller presented a data tolerance of approximately 0.84% which was not significantly different from the theoretical figure based on T-test analysis. The controller reacted to variations in flow rates in as little as 1−2 s, which was acceptable for the dynamic test. Regarding the performance enhancement, this automatic hydrogen flow controller assisted a single cell to generate 16% more power and 33% more energy at 45 mA as a minimum current demand in comparison with the results obtained from a test system using a traditional hydrogen controller with a constant flow rate.

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Section: Results and Discussionmentioning

confidence: 99%

Hydrogen Flow Controller Applied to Driving Behavior Observation of Hydrogen Fuel Cell Performance Test

2022

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“…In general, unlike fuel cells that use hydrogen, glucose fuel cells exhibit very high resistances [19,53] . This is related to the charge transfer resistance because the glucose oxidation is very difficult to occur and slow [11,42] . Thus, the general EIS measurement results show a diverging shape instead of a semicircle.…”

Section: Resultsmentioning

confidence: 99%

“…The increase in the flow rate of the glucose solution in the flow path direction also increases the flow rate in the direction (through‐plane) passing through the diffusion layer. Eventually, the flow rate increase in the porous medium improves the glucose permeability and performance [42] . However, when the limit flow rate within the single cell is reached, that of the flow path direction increases rather than that of the direction through the diffusion layer.…”

Section: Resultsmentioning

confidence: 99%

“…There are few studies on the effect of flow‐field designs on the performance of nonenzymatic glucose fuel cells in a PEM environment. In our previous study, we investigated the glucose permeability according to the characteristics (e. g., PTFE treatment, microporous layer) of the carbon paper‐based diffusion layer [42] . The chemical treatment of the diffusion layer was studied, except for the effect of the flow channel architecture.…”

Section: Introductionmentioning

confidence: 99%

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Flow Channel Architecture and Diffusion Characteristics of Nonenzymatic Electrochemical Glucose Fuel Cells with Proton Exchange Membrane

et al. 2022

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A nonenzymatic glucose fuel cell directly oxidizes glucose to gluconic acid as a Pt‐based abiotic catalyst in a proton exchange membrane environment and has various advantages (e. g., biocompatibility, chemical stability, high ionic conductivity). We report the permeability of a less hydrophobic diffusion layer for three flow‐field designs (serpentine, interdigitated, and parallel). In all cases, as the channel width of the flow path increases, the power density increases and the Ohmic resistance decreases. The serpentine shape (channel and rib widths: 1.5 and 0.5 mm, respectively) exhibits remarkable maximum power and current densities (cell voltage: 60 mV) of 103.4 μW cm−2 and 1,273 μA cm−2 compared to those of the parallel (46.5 μW cm−2 at 683 μA cm−2) and interdigitated (74.0 μW cm−2 at 878 μA cm−2) shapes, respectively. Furthermore, permeability and performance analyses according to the single‐cell temperature, glucose concentration, and flow rate changes provide various perspectives on glucose fuel cells.

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“…Membranes for GFCs generally have two main functions [61][62][63][64][65]: (1) they can act as electrolyte between cathode and anode for ion conduction; (2) they can be used as a separator to separate the two half-reactions. There are different half-reactions taken place in different types of GFCs.…”

Section: Role Of Membranes In Gfcsmentioning

confidence: 99%

Glucose Fuel Cells and Membranes: A Brief Overview and Literature Analysis

Liu

2022

Sustainability

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Glucose is a ubiquitous source of energy for nearly all living things, and glucose fuel cells (GFCs) are regarded as a sustainable power source because glucose is renewable, easily available, cheap, abundant, non-toxic and easy-to-store. Numerous efforts have been devoted to developing and improving GFC performance; however, there is still no commercially viable devices on the market. Membranes play an essential role in GFCs for the establishment of a suitable local microenvironment, selective ion conducting and prevention of substrate crossover. However, our knowledge on them is still limited, especially on how to achieve comparable efficacy with that of a biological system. This review article provides the first brief overview on these aspects, particularly keeping in sight the research trends, current challenges, and the future prospects. We aim to bring together literature analysis and technological discussion on GFCs and membranes by using bibliometrics, and provide new ideas for researchers in this field to overcome challenges on developing high-performance GFCs.

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Effects of the Anode Diffusion Layer on the Performance of a Nonenzymatic Electrochemical Glucose Fuel Cell with a Proton Exchange Membrane

Cited by 6 publications

References 66 publications

Hydrogen Flow Controller Applied to Driving Behavior Observation of Hydrogen Fuel Cell Performance Test

Hydrogen Flow Controller Applied to Driving Behavior Observation of Hydrogen Fuel Cell Performance Test

Flow Channel Architecture and Diffusion Characteristics of Nonenzymatic Electrochemical Glucose Fuel Cells with Proton Exchange Membrane

Glucose Fuel Cells and Membranes: A Brief Overview and Literature Analysis

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