Impact of Ohmic Resistance on Measured Electrode Potentials and Maximum Power Production in Microbial Fuel Cells

2018 ◽  
Vol 52 (15) ◽  
pp. 8977-8985 ◽  
Author(s):  
Bruce E. Logan ◽  
Emily Zikmund ◽  
Wulin Yang ◽  
Ruggero Rossi ◽  
Kyoung-Yeol Kim ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Power Production ◽  
Maximum Power ◽  
Ohmic Resistance ◽  
Electrode Potentials

Effect of Metal Modification to Carbon Paper Anodes on the Performance of Yeast-Based Microbial Fuel Cells Part Ι: In the Case without Exogenous Mediator

2013 ◽  
Vol 534 ◽  
pp. 76-81 ◽  
Author(s):  
Enas Taha Kasem ◽  
Takuya Tsujiguchi ◽  
Nobuyoshi Nakagawa
Keyword(s):  
Electron Transfer ◽  
Fuel Cells ◽  
Fuel Cell ◽  
Thin Layer ◽  
Electrode Surface ◽  
Microbial Fuel Cells ◽  
Yeast Cells ◽  
Carbon Paper ◽  
Electrode Potentials ◽  
Different Thickness

Effect of modification of carbon paper with a thin layer of cobalt or gold on the performance of yeast-based microbial fuel cells was investigated. The modification was conducted by depositing Co or Au thin layer with different thickness, 5 nm and 30 nm, using a sputtering technique. The electrode performance was evaluated by measuring the electrode potentials and the fuel cell power output. The Co modification significantly increased the performance of the fuel cell, while the Au modification inhibited the performance. SEM observation indicated that the adhesion density of the yeast cells on the electrode surface was affected by the metals. It was confirmed that the electron transfer took place through the surface confined species at the mediatorless anode.

scholarly journals Natural Wolframite Used as Cathode Photocatalyst for Improving the Performance of Microbial Fuel Cells

2018 ◽  
Vol 8 (12) ◽  
pp. 2504
Author(s):  
Junxian Shi ◽  
Anhuai Lu ◽  
Haibin Chu ◽  
Hongyu Wu ◽  
Hongrui Ding
Keyword(s):  
Fuel Cells ◽  
Power Density ◽  
Microbial Fuel Cells ◽  
Environmental Remediation ◽  
Low Cost ◽  
Reduction Process ◽  
Maximum Power ◽  
Maximum Power Density ◽  
Graphite Cathode ◽  
Vis Spectroscopy

Developing simple and cheap electrocatalysts or photocatalysts for cathodes to increase the oxygen reduction process is a key factor for better utilization of microbial fuel cells (MFCs). Here, we report the investigation of natural wolframite employed as a low-cost cathode photocatalyst to improve the performance of MFCs. The semiconducting wolframite was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy. The band gap and photo respond activities were determined by UV-vis spectroscopy and linear sweep voltammetry (LSV), respectively. Compared with the normal graphite cathode, when MFCs were equipped with a wolframite-coated cathode, the maximum power density was increased from 41.47 mW·m−2 to 95.51 mW·m−2. Notably, the maximum power density further improved to 135.57 mW·m−2 under light irradiation, which was 2.4 times higher than with a graphite cathode. Our research demonstrated that natural wolframite, a low-cost and abundant natural semiconducting mineral, showed promise as an effective photocathode catalyst which has great potential applications related to utilizing natural minerals in MFCs and for environmental remediation by MFCs in the future.

Graphite Fiber Brush Anodes for Increased Power Production in Air-Cathode Microbial Fuel Cells

2007 ◽  
Vol 41 (9) ◽  
pp. 3341-3346 ◽  
Author(s):  
Bruce Logan ◽  
Shaoan Cheng ◽  
Valerie Watson ◽  
Garett Estadt
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Power Production ◽  
Graphite Fiber ◽  
Air Cathode

Diffusion layer characteristics for increasing the performance of activated carbon air cathodes in microbial fuel cells

2016 ◽  
Vol 2 (2) ◽  
pp. 266-273 ◽  
Author(s):  
Xiaoyuan Zhang ◽  
Weihua He ◽  
Wulin Yang ◽  
Jia Liu ◽  
Qiuying Wang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cells ◽  
Activated Carbon ◽  
Diffusion Layer ◽  
Microbial Fuel Cells ◽  
Power Production ◽  
Air Cathode

Air cathode characteristics significantly affected power production of microbial fuel cells during wastewater treatment.

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