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Showing 1 to 15 of 15 for “"anion-exchange membrane"”.
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Ni Stability in Anion Exchange Membrane Fuel Cells
… platinum group metal (PGM) catalysts. An anion exchange membrane fuel cell (AEMFC) is one of many alternatives. The AEMFC provides an alkaline environment that enables the use of many non-platinum group metal (non-PGM) catalysts. This grants AEMFCs the potential to become Pt-free and thus …
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FIRST ROW TRANSITION METAL OXIDES AS ELECTROCATALYSTS FOR ANION EXCHANGE MEMBRANE FUEL CELLS AND ELECTROLYZERS
… transition metal oxides as candidates for anion exchange membrane fuel cells. These included a series of La-based perovskite oxides and a specific Co-Mn spinel oxide. For characterizing these systems, I employed electrochemical techniques such as cyclic voltammetry and rotating disk …
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Challege and Opportunities of Membrane Bioelctrochemical Reactors for Wastewater Treatment
… approach for wastewater treatment. Integrating membrane filtration with MFCs could be a viable option for advanced wastewater treatment with a low energy input. Such an integration is termed as membrane bioelectrochemical reactors (MBERs). Comparing to the conventional membrane bioreactors or …
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Mathematical Simulation of Direct Glucose Fuel Cell
… consisting of electrodes, gas diffusion layers, anion exchange membrane, catalyst layers and flow channels. These equations were solved using numerical techniques such as Runge-Kutta 4th order method and Shooting technique in MATLAB. The influence of various parameters such as anionic …
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Nitrogen Removal from Closed Aquaculture System by Bio-electrochemical System
… A microbial fuel cell (MFC) with an anion exchange membrane (AEM) was constructed. The removal of nitrate from aquaculture water generated from RAS was achieved by nitrate migration across the AEM and heterotrophic denitrification in the anode chamber. To further investigate the …
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Electrochemical water technologies for resource recovery using polymer electrolytes
… range of pH values. For water electrolysis, new anion exchange materials need to be developed with both high conductivity and durability for thousands of hours of operation. In this work, electrochemical nutrient recovery at acidic and neutral pH conditions were explored to elucidate critical …
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Electrochemical oxidation and reduction of 5-hydroxymethylfurfural in alkaline water electrolyzers
… with the electrochemical conversion of HMF in anion exchange membrane water electrolyzers. Specifically, the oxidation of HMF is catalyzed by nickel-based layered double hydroxides. Here, the NiFe(-Cl-)-LDH@NF catalyst showed 100% HMF conversion and 100% selectivity towards the desired product …
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SYNTHESIS OF PERFLUOROHETEROAROMATIC POLYMERS FOR ION-CONDUCTING MEMBRANE FUEL CELLS VIA FREE RADICAL-BASED REACTIONS AND SYNTHESIS OF DI-CATIONIC IONIC LIQUIDS AS EFFICIENT SO2 ABSORBENTS
… acid polymers (PFSAs). Two proton-exchange membranes perfluorobenzoic acid (PFBA) and perfluorobenzenesulfonic acid (PFBSA)—were synthesized for proton-exchange membrane fuel cells via the free radical-based reaction. The physical properties, in-plane ionic conductivities and fuel …
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Catalyst Layer Design in Polymer Membrane Fuel Cells
… obstacles to commercializing polymer electrolyte membrane fuel cells is the use of platinum as a catalyst. One way to overcome this obstacle is to replace platinum with non-platinum group metal (non-PGM) catalysts, particularly for the oxygen reduction reaction (ORR) in proton exchange membrane …
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Anion Exchange Membranes (AEMs), based on Polyamine Obtained by Modifying Polyketone, for Electrochemical Applications
Polymeric anion exchange materials can be key components for forming membranes for use in several electrochemical applications. Polyketones seem particularly promising as materials for making anion exchange membranes (AEMs), not only because the starting monomers, carbon monoxide and ethylene, are …
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Synthesis and characterization of aminated perfluoro polymer electrolytes
… electrolytes have been developed for use in anion exchange membrane fuel cells for years. However, due to the highly corrosive environment within these fuel cells, poor chemical stability of the polymers and low ion conductivity have led to high development costs and thus prevention from …
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GREEN ENERGY VIA ELECTROCHEMICAL PROCESSES (GEEP)
… processes are selected the polymer exchange membrane processes the more stable Proton Exchange Membrane Water Electrolyzer (PEMWE) and the promising Anion Exchange Membrane Water Electrolyser (AEMWE). It is decided to investigate the green hydrogen production in correlation to the …
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Nonlinear ion concentration polarization : fundamentals and applications
Ion exchange membrane (IEM) is a functional material that has a permselectivity of ions. Two types of IEMs - anion exchange membrane (AEM) and cation exchange membrane (CEM) - are used in a variety of electrochemical systems. Ion concentration polarization (ICP) is an ion transport phenomenon that …