Bioelectricity production from fermentable household waste extract using a single chamber microbial fuel cell

Study of a Thin Film Aluminum-Air Battery

“…A plain CB/CC electrode then makes a battery with satisfactory performance, but it enjoys an even better performance when manganese oxide is mixed with carbon black. This result justifies the employment of MnO2 as oxygen reduction electrocatalyst both in the present case as well as in other fuel cell applications, as already discussed [13][14][15][16][17][18][19]. The appearance of the polarization curve, more specifically, the fact that current density continuously increased with voltage decrease and did not demonstrate an extremum is a rough index of the state of the electrolyte in the device.…”

“…With this in mind, in the present work we studied the addition of MnO 2 as non-noble-metal electrocatalyst to operate the thin film Al-air battery. MnO 2 has been previously successfully employed as oxygen reduction electrocatalyst in several types of fuel cell devices including Al-air battery [13], Na-air battery [14], microbial fuel cells [15][16][17][18], and other types of fuel cells [19]. The present work will then also deal with the study of MnO 2 -loaded cathode electrodes which will be applied to thin film Al-air batteries.…”

Performance assessment of a four-air cathode membraneless microbial fuel cell stack for wastewater treatment and energy extraction

“…Prior to the continuous operation, the MFCs were operated and acclimated in batch mode as described in detail elsewhere [12,17]. The enrichment and adaptation of the electrochemically active bacteria were performed during the first batch cycles.…”

“…The experimental fitting was applied considering the solution resistance of the cell (RS) in series with two parallel RQ components. RCT is defined as the charge transfer resistance, RBF the biofilm resistance, QCT and QBF the capacitance of charge transfer and biofilm respectively and Warburg element (W) as the diffusion impedance as reported elsewhere [12,17,21].…”

“…Electrochemical Impedance Spectroscopy (EIS) is a technique widely used to give an insight to the electrochemical phenomena in fuel cells [8][9][10][11]. This technique has become a valuable and in-depth understanding tool for phenomena occurring in individual MFC units as well as in MFC stacks [12,13].…”