Alkaline Anion Exchange Membrane (AEM) Water Electrolysers—Current/Future Perspectives in Electrolysers for Hydrogen

Mamlouk, Mohamed

doi:10.1016/b978-0-12-819727-1.00103-5

Cited by 7 publications

(3 citation statements)

References 209 publications

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“…In the maximum frequency range, each point has a distinct semicircle, while in the minimum frequency range, it has a straight line. The diameters are used to calculate the charge transfer resistance (Rct) of each electrode ( Mamlouk, 2021 ). The electrolyte and the Rct values have a directly proportional relationship in the associated reaction between the catalyst and the reactant.…”

Section: Resultsmentioning

confidence: 99%

Use of biogenic silver nanoparticles on the cathode to improve bioelectricity production in microbial fuel cells

Elkhrachy,

Singh,

Kumar

et al. 2023

Front. Chem.

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To date, research on microbial fuel cells (MFCs) has. focused on the production of cost-effective, high-performance electrodes and catalysts. The present study focuses on the synthesis of silver nanoparticles (AgNPs) by Pseudomonas sp. and evaluates their role as an oxygen reduction reaction (ORR) catalyst in an MFC. Biogenic AgNPs were synthesized from Pseudomonas aeruginosa via facile hydrothermal synthesis. The physiochemical characterization of the biogenic AgNPs was conducted via scanning electron microscopy (SEM), X-ray diffraction (XRD), and UV-visible spectrum analysis. SEM micrographs showed a spherical cluster of AgNPs of 20–100 nm in size. The oxygen reduction reaction (ORR) ability of the biogenic AgNPs was studied using cyclic voltammetry (CV). The oxygen reduction peaks were observed at 0.43 V, 0.42 V, 0.410 V, and 0.39 V. Different concentrations of biogenic AgNPs (0.25–1.0 mg/cm2) were used as ORR catalysts at the cathode in the MFC. A steady increase in the power production was observed with increasing concentrations of biogenic AgNPs. Biogenic AgNPs loaded with 1.0 mg/cm2 exhibited the highest power density (PDmax) of 4.70 W/m3, which was approximately 26.30% higher than the PDmax of the sample loaded with 0.25 mg/cm2. The highest COD removal and Coulombic efficiency (CE) were also observed in biogenic AgNPs loaded with 1.0 mg/cm2 (83.8% and 11.7%, respectively). However, the opposite trend was observed in the internal resistance of the MFC. The lowest internal resistance was observed in a 1.0 mg/cm2 loading (87 Ω), which is attributed to the high oxygen reduction kinetics at the surface of the cathode by the biogenic AgNPs. The results of this study conclude that biogenic AgNPs are a cost-effective, high-performance ORR catalyst in MFCs.

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Section: Resultsmentioning

confidence: 99%

Use of biogenic silver nanoparticles on the cathode to improve bioelectricity production in microbial fuel cells

Elkhrachy,

Singh,

Kumar

et al. 2023

Front. Chem.

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“…For instance, acidic environments will prefer the production of formic acid as opposed to formate, which has generally been demonstrated in previous literature [37]. In addition, a lower pH may favor hydrogen evolution [38]. Often, studies involving catalysts monitor system pH using either buffered solutions or controlled operating conditions, to determine the desired product range [39][40][41].…”

Section: Introductionmentioning

confidence: 88%

Electrochemical Co2 Conversion to Formic Acid Using Engineered Enzymatic Catalysts in a Batch Reactor

Moreno

Omosebi

Jeon³

et al. 2022

SSRN Journal

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“…Anion exchange membrane water electrolyzer (AEMWE) uses a solid electrolyte membrane (similar to PEM) that conducts hydroxide ions (similar to AWE) when fully hydrated and hence can operate at a differential pressure of 20-30 barg [4,42]. AEMWE has dynamics faster than AWE but slightly slower than PEMWE with a start-up from cold in the range of 5-10 min and ramp-up from 20% to 100% in 2-4 s and a minimum operating load of 5% of maximum capacity.…”

Section: Anion Exchange Membrane Water Electrolyzermentioning

confidence: 99%

Constructing micro-nano rod-shaped iron-molybdenum oxide heterojunctions to enhance overall water electrolysis

Vijayapradeep,

Kumar,

Karthikeyan

et al. 2024

Materials Today Chemistry

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Alkaline Anion Exchange Membrane (AEM) Water Electrolysers—Current/Future Perspectives in Electrolysers for Hydrogen

Cited by 7 publications

References 209 publications

Use of biogenic silver nanoparticles on the cathode to improve bioelectricity production in microbial fuel cells

Use of biogenic silver nanoparticles on the cathode to improve bioelectricity production in microbial fuel cells

Electrochemical Co2 Conversion to Formic Acid Using Engineered Enzymatic Catalysts in a Batch Reactor

Constructing micro-nano rod-shaped iron-molybdenum oxide heterojunctions to enhance overall water electrolysis

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