Interface resistances of anion exchange membranes in microbial fuel cells with low ionic strength

High-performance biodegradable membrane for point of need paper-based micro-scale microbial fuel cell analytical devices

“…Where V is the receptor chamber volume (50 μL), A is the membrane cross-sectional area, is the saturated oxygen concentration in the donor chamber, C is the DO concentration in the receptor chambers at time t [42, 44, 45]. A schematic representation of the used setup is presented (Fig A in S1 File).…”

Separators used in microbial electrochemical technologies: Current status and future prospects

“…An MFC with a membrane cathode assembly using the same AEM generates almost twice as much power density (13.1 W/m 3 ) compared to that of a CEM cathode assembly (Zuo et al, 2008). The internal resistance of MFCs with AEM separators having different electrical resistance is related positively to the ion-exchange capacity of the separator used, and the MFC performance was inversely related to the ion-exchange capacity (Ji et al, 2011).…”

Power Density Enhancement of Anion-Exchange Membrane-Installed Microbial Fuel Cell Under Bicarbonate-Buffered Cathode Condition

“…Microbial fuel cells (MFCs) are electrochemical reactors that convert the chemical energy generated from organic materials by microorganisms into electricity [7,10]. It has been noted that the electric power density obtained using MFCs is still low, however, which hampers their practical application for energy production processes [6]. One factor that contributes to this low power density is the internal resistance associated with both transporting ions between the anode and cathode electrodes and transporting electrons through the electrical circuit.…”

“…One factor that contributes to this low power density is the internal resistance associated with both transporting ions between the anode and cathode electrodes and transporting electrons through the electrical circuit. Furthermore, the generally dominant ion-transport resistance [6] occurs in the electrolyte solution and through the ion-exchange membrane in typical MFC configurations [6]. Among MFC membranes, anion-exchange membranes (AEMs) have better performance a compared with cation-exchange membranes, as protons in the anode are consumed by OHtransferred from the cathode, without further pH decreases in the anode chamber.…”

“…Among MFC membranes, anion-exchange membranes (AEMs) have better performance a compared with cation-exchange membranes, as protons in the anode are consumed by OHtransferred from the cathode, without further pH decreases in the anode chamber. This property of AEMs results in lowering the ion transport resistance and reducing membrane fouling and the cathode resistance caused by the precipitation of transported cations [6,11]. However, these advantages of AEMs have a correlation with the concentration of buffering electrolytes, because AEM requires a high concentration of positively charged groups to transport negatively charged ions, which leads to the formation of an electrical double layer (in nanometer scale).…”