Investigation of microbial fuel cell performance based on the nickel thin film modified electrodes
Fatemeh Mahmoodzadeh, Nahid Navidjouy, Saber Alizadeh, Mostafa Rahimnejad
AI summary
60% confidenceMicrobial fuel cells (MFCs) with nickel thin film modified electrodes show enhanced power generation capacity and improved structural and morphological properties.
Generated by MESSAI extraction pipeline · review against source PDF
Representative MFC — matched on the paper’s system type only, not its reactor or geometry.
Open in lab for full controls, parameter editing, and template overlays.
Open in lab →What they did
- System
- MFC
What worked
No outcome metrics extracted yet.
Abstract
Abstract Microbial fuel cells (MFCs) are a self-sustaining and environmentally friendly system for the simultaneous was tewater treatment and bioelectricity generation. The type and material of the electrode are critical factors that can influence the efficiency of this treatment process. In this study, graphite plates and carbon felt were modified through the electrodeposition of nickel followed by the formation of a biofilm, resulting in conductive bio-anode thin film electrodes with enhanced power generation capacity. The structural and morphological properties of the electrode surfaces were characterized using X-ray diffraction, energy-dispersive X-ray spectroscopy, elemental mapping, and field-emission scanning electron microscopy techniques. Maximum voltage, current density, and power generation were investigated using a dual-chamber MFC equipped with a Nafion 117 membrane and bio-nickel-doped carbon felt (bio-Ni@CF) and bio-nickel-doped graphite plate (bio-Ni@GP) electrodes under constant temperature conditions. The polarization and power curves obtained using different anode electrodes revealed that the maximum voltage, power and current density achieved with the bio-Ni@CF electrode were 468.0 mV, 130.72 mW/m 2 and 760.0 mA/m 2 respectively. Moreover, the modified electrodes demonstrated appropriate stability and resistance during successful runs. These results suggest that nickel-doped carbon-based electrodes can serve as suitable and stable supported catalysts and conductors for improving efficiency and increasing power generation in MFCs.
Key findings
- Maximum voltage, current density, and power generation were enhanced with the use of nickel thin film modified electrodes.
- The bio-nickel-doped carbon felt and graphite plate electrodes showed improved performance compared to unmodified electrodes.
- The polarization and power curves indicated that the nickel thin film modified electrodes had a higher maximum voltage and power generation capacity.
Keywords
Identifiers
- Journal
- Scientific Reports
- Year
- 2023