scholarly journals Carbon Nanotube Planted on Ni-Based Alloy in Microbial Fuel Cell

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Chin-Tsan Wang ◽  
Yan-Ming Chen ◽  
Zhao-Qin Qi ◽  
Yung-Chin Yang
Keyword(s):  
Power Generation ◽  
Carbon Nanotube ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Electrode Materials ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Maximum Power Density ◽  
Power Performance ◽  
Materials Used

The improvement of electrode materials used in microbial fuel cell (MFC) technology for enhancing the power performance of MFCs has attracted more and more attention lately. In this study, an new electrode material with a carbon nanotube planted on an Ni-based alloy substrate is applied to the MFC. Results show that a well-synthesized, straight CNT electrode performs the best, with a high open circuit voltage of 0.82 V and a maximum power density of 2.31 W/m2. It is believed that this new kind of electrode will have a promising future in the technology of power generation from MFCs.

Preparation of Ce0.8Sm0.2O1.9 Thin Films by Electrophoretic Deposition and their Fuel Cell Performance

2013 ◽  
Vol 566 ◽  
pp. 137-140 ◽  
Author(s):  
Hiroki Ichiboshi ◽  
Kenichi Myoujin ◽  
Takayuki Kodera ◽  
Takashi Ogihara
Keyword(s):  
Thin Films ◽  
Fuel Cell ◽  
Spray Pyrolysis ◽  
Power Density ◽  
Electrophoretic Deposition ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Doped Ceria ◽  
Maximum Power Density ◽  
Fuel Cell Performance

Ce0.8Sm0.2O1.9 (Samaria-doped ceria: SDC) precursors were synthesized by carbon-assisted spray pyrolysis. SDC thin films were prepared by electrophoretic deposition using the SDC precursor particles. The as-prepared SDC thin films were sintered at 1600 °C for 10 h. Uniform films with a thickness of approximately 20 μm were obtained. A fuel cell using the prepared thin films showed a maximum power density of 60.6 mW/cm2 and an open circuit voltage (OCV) of 0.63 V at 700 °C.

scholarly journals Effect of diatomaceous earth on thermoelectric elements using multi-walled carbon nanotubes

2018 ◽  
Vol 3 (4) ◽  
pp. 5-8
Author(s):  
Keyword(s):  
Power Generation ◽  
Carbon Nanotube ◽  
Diatomaceous Earth ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Thermoelectric Devices ◽  
Multi Walled Carbon Nanotube ◽  
Multi Walled Carbon Nanotubes ◽  
Generation Capacity ◽  
Walled Carbon Nanotubes

Thermoelectric power generation is one of the expected new renewable energy in the future. However, the power generation capacity of thermoelectric devices is poor. In this research, we focused on utilizing diatomaceous earth to improve the performance of thermoelectric devices because it has low thermal conductivity. Our thermoelectric devices based on multi-walled carbon nanotube and diatomaceous earth have improved the open-circuit voltage about 30% compared with the conventional thermoelectric devices based on multi-walled carbon nanotube only.

Open Circuit Voltage and Single Walled Carbon Nanotube (wt%) Dependency in Solid-State Complementary Metal Oxide Semiconductor-Compatible Glucose Fuel Cells

2020 ◽  
Vol 12 (1) ◽  
pp. 101-106
Author(s):  
Md. Zahidul Islam ◽  
Shigeki Arata ◽  
Kenya Hayashi ◽  
Atsuki Kobayashi ◽  
Kiichi Niitsu
Keyword(s):  
Carbon Nanotube ◽  
Fuel Cell ◽  
Open Circuit Voltage ◽  
Complementary Metal Oxide Semiconductor ◽  
Open Circuit ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Cmos Compatible

Solid-state complementary metal oxide semiconductor (CMOS)-compatible glucose fuel cells, with single-walled carbon nanotube (SWCNT) films and different amounts of carbon nanotube (wt%) were investigated. Those with a SWCNT content of 3 wt% were found to develop the highest open circuit voltage (OCV) of 400 mV, together with a high electrical conductivity, a power density of 0.53 μW/cm2 and current density of 1.31 μA/cm2. Measurements were performed by dipping the anode into a 30 mM glucose solution. The OCV and power density increased together with the fuel cell concentration. The developed fuel cell uses materials that are biocompatible with the human body (single-walled carbon nanotube-glucose). As a result, it was possible to attain an OCV of 400 mV with a single-walled carbon nanotube content of 3 wt% while improvements in the performance of the CMOS-compatible glucose fuel cell were obtained, and the parameters affecting the performance of the fuel cell were identified. This bio-fuel cell was fabricated using CMOS semiconductor processes on a silicon wafer. These findings are significant to realizing mobile or implantable devices that can be used for biomedical applications.

scholarly journals Removal of Phosphorus from Domestic Sewage by a Constructed Wetland Coupled Microbial Fuel Cell System

2021 ◽  
Author(s):  
Shuang Yu ◽  
Peng Dou ◽  
Yue Yin ◽  
Peijing Wang ◽  
Hao Wang ◽  
...  
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Constructed Wetland ◽  
Phosphorus Removal ◽  
Electrode Materials ◽  
Domestic Sewage ◽  
System Structure ◽  
Exchange Reactions ◽  
Stable Voltage

Abstract A constructed wetland (CW) coupled microbial fuel cell (MFC) system that treats wastewater and generates electricity was constructed. The total phosphorus in the simulated domestic sewage was used as the treatment target, and the optimal phosphorus removal effect and electricity generation were determined by comparing the changes in substrates, hydraulic retention times, and microorganisms. The mechanism underlying phosphorus removal was also analyzed. The experimental results showed that the best removal efficiencies of the two CW-MFC systems that used magnesia and garnet as substrates were 80.3% and 92.4%, respectively. Phosphorus removal by the garnet matrix mainly depends on a complex adsorption process whereas the magnesia system relies on ion exchange reactions. The CW-MFC system can also generate electricity. The highest output voltage and stable voltage of the garnet system were both higher than those of the magnesia system. The maximum stable voltage of the garnet device was 500 mV, while that of the magnesia device was 290 mV. The microorganisms in the soil and in the electrode within the wetland sediments also substantially changed, indicating that microorganisms positively respond to the removal of organic matter and power generation. Combining the advantages of constructed wetlands and microbial fuel cells also improves phosphorus removal in the coupled system. Therefore, when studying a CW-MFC system, the selection of electrode materials, matrix, and system structure should be taken into account in order to find a method that will improve the power generation capacity of the system and remove phosphorus.

Low-Temperature Direct Propane Polymer Electrolyte Membrane Fuel Cell (DPFC)

2006 ◽  
Author(s):  
Sudharsan Bharath
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Low Temperature ◽  
Current Density ◽  
Open Circuit Voltage ◽  
Polymer Electrolyte Membrane ◽  
Open Circuit ◽  
Maximum Power Density ◽  
Silicotungstic Acid ◽  
Electrolyte Membrane

The low-temperature Direct Propane Polymer Electrolyte Membrane Fuel Cell (DPFC) based on low-cost modified membranes was demonstrated for the first time. The propane is fed into the fuel cell directly without the need for reforming. A PBI membrane doped with acid and a Nafion 117 membrane modified or non-modified with silicotungstic acid were used as the polymer membranes. The anode was based on Pt, Pt-Ru or Pt/CrO3 electro catalysts and the cathode was based on a Pt electro catalyst. For non-optimized fuel cells based on H2SO4 doped PBI membranes and Pt/CrO3 anode, the open circuit potential was 1.0 Volt and the current density at 0.40 Volt was 118 mA.cm-2 at 95°C. For fuel cells based on Nafion 117 membranes modified with silicotungstic acid and on Pt/CrO3, the open-circuit voltage was 0.98 Volt and the current density at 0.40 Volt was 108 mA.cm-2 while fuel cells based on non-modified Nafion 117 membranes exhibited an open-circuit voltage of 0.8 Volt and the current density at 0.40 Volt was 42 mA.cm-2. It was also shown that propane fuel cells using anodes based on Pt-Ru/C anode (42 mW.cm-2) exhibit a similar maximum power density to that exhibited by fuel cells based on Pt-CrO3/C-anode (46 mW.cm-2), while DPFC using a Pt/C-based anode exhibited lower maximum power density (18 mW.cm-2) than fuel cells based on the Pt-CrO3/C anode (46 mW.cm-2).

Submersible microbial fuel cell for electricity production from sewage sludge

2011 ◽  
Vol 64 (1) ◽  
pp. 50-55 ◽  
Author(s):  
Yifeng Zhang ◽  
Lola Gonzalez Olias ◽  
Prawit Kongjan ◽  
Irini Angelidaki
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Sewage Sludge ◽  
Microbial Fuel Cell ◽  
Power Density ◽  
Oxygen Demand ◽  
Maximum Power ◽  
Electricity Production ◽  
Maximum Power Density ◽  
Sludge Concentration

A submersible microbial fuel cell (SMFC) was utilized to treat sewage sludge and simultaneously generate electricity. Stable power generation (145 ± 5 mW/m2, 470 Ω) was produced continuously from raw sewage sludge for 5.5 days. The maximum power density reached 190 ± 5 mW/m2. The corresponding total chemical oxygen demand (TCOD) removal efficiency was 78.1 ± 0.2% with initial TCOD of 49.7 g/L. The power generation of SMFC was depended on the sludge concentration, while dilution of the raw sludge resulted in higher power density. The maximum power density was saturated at sludge concentration of 17 g-TCOD/L, where 290 mW/m2 was achieved. When effluents from an anaerobic digester that was fed with raw sludge were used as substrate in the SMFC, a maximum power density of 318 mW/m2, and a final TCOD removal of 71.9 ± 0.2% were achieved. These results have practical implications for development of an effective system to treat sewage sludge and simultaneously recover energy.

BiFeO3/YSZ bilayer electrolyte for low temperature solid oxide fuel cell

RSC Advances ◽  
2014 ◽  
Vol 4 (38) ◽  
pp. 19925-19931 ◽  
Author(s):  
Yu-Chieh Tu ◽  
Chun-Yu Chang ◽  
Ming-Chung Wu ◽  
Jing-Jong Shyue ◽  
Wei-Fang Su
Keyword(s):  
Fuel Cell ◽  
Low Temperature ◽  
Solid Oxide Fuel Cell ◽  
Solution Method ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Maximum Power Density ◽  
Bilayer Electrolyte

Highly crystalline perovskite BiFeO3 is obtained by a facile solution method. We have reported that the YSZ/BFO electrolyte with 17 μm/30 μm thickness, respectively, showed a maximum power density of 165 mW cm−2 and open-circuit voltage of 0.75 V at 650 °C.

Fabrication of an Anode-Supported Sofc with a Sol-Gel Coating Method for a Mixed-Gas Fuel Cell

2005 ◽  
Vol 277-279 ◽  
pp. 455-461 ◽  
Author(s):  
Nguyen Xuan Phuong Vo ◽  
Sung Pil Yoon ◽  
Suk Woo Nam ◽  
Jong Hee Han ◽  
Tae Hoon Lim ◽  
...  
Keyword(s):  
Thin Film ◽  
Fuel Cell ◽  
Single Cell ◽  
Power Density ◽  
Open Circuit Voltage ◽  
Sol Gel ◽  
Open Circuit ◽  
Maximum Power ◽  
Maximum Power Density ◽  
Mixed Gas

An anode-supported type solid oxide fuel cell (SOFC) is a promising structure resulting in a very high performance because it consists of a very thin electrolyte. In the preliminary stage, we have succeeded in the fabrication of Samaria-Doped Ceria (SDC) thin film on a porous Ni-Al substrate using a sol-gel coating technique. The thin electrolyte film binds the substrate well and a single cell made with the SDC thin-film electrolyte and porous LSM cathode exhibited a good performance in a mixed-gas condition, even at intermediate temperatures. The single cell, consisting of 20 µm thin SDC electrolytes, the porous Ni-Al anode substrate, and a LSM cathode, exhibited an open circuit voltage of 0.82V and a maximum power density of 0.31 W.cm-2 at 700°C with humidified methane and air mixtures. This cell also generated an open circuit voltage of about 1.1V and a maximum power density of 0.34 W.cm-2 at 600°C with humidified hydrogen as the fuel and air as the oxidant.

scholarly journals Bioelectricity Production through Microbial Fuel Cell: Sustainable Energy Source

2020 ◽  
Vol 06 (09) ◽  
pp. 73-76
Author(s):  
Kumar Gaurav
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Cathode Materials ◽  
Microbial Fuel Cells ◽  
Electrode Materials ◽  
Sustainable Energy ◽  
Renewable Energy Sources ◽  
Waste Water Treatment ◽  
Electrical Energy ◽  
Materials Used

Current world is facing the twin crisis of energy security due to depletion of non renewable energy sources and climate change caused by green house effect. This has led the researchers to think for various alternatives for sustainable energy production. Fuel cell technology has emerged as one of the potential options for generating clean and efficient energy. Microbial fuel cell (MFC) is a device for the conversion of chemical energy stored in organic compounds into electrical energy with the help of different microorganisms. For practical application of MFC, the main factors that are considered are efficiency and low costs. Efficiency of MFC is dependent on the effectiveness of the anode and cathode materials used in the fuel cell. In this review paper, various developments in electrode materials for microbial fuel cells (MFC) are discussed. Various modifications of anode and cathode materials for enhancement of power generation and simultaneous waste water treatment are also explored.

scholarly journals Performance of Microbial Fuel Cell to Generate Bioelectricity Uses Different Kinds of Electrode in the Fish Processing Wastewater

2017 ◽  
Vol 20 (2) ◽  
pp. 296 ◽  
Author(s):  
Bustami Ibrahim ◽  
Pipih Suptijah ◽  
Zhalindri Noor Adjani
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Total Nitrogen ◽  
Electrode Materials ◽  
Electrical Energy ◽  
Organic Pollution ◽  
Organic Load ◽  
Load Parameter ◽  
Fish Processing ◽  
Materials Used

Microbial Fuel Cell (MFC) is one of the alternative technologies which can convert chemical energy to electrical energy through a catalytic reaction using microorganisms. The technology can be implemented for wastewater handling such as fish processing wastewater which contains highly in organic substances. The research objective was to measure the performance of MFC system using fishery processing wastewater in order to generate bioelectricity and to reduce its organic pollution load within a different material of the electrode. The electrode materials used were aluminum, iron, carbon graphite, and also the combination of aluminum and carbon graphite. The research carried out in three phases: production of fishery wastewater, assembly of MFC single chamber system and measurement of the bioelectricity produced. The bioelectricity power resulted during 120 hours of observation were 0.23V for aluminum, 0.17V for iron, 0.19V for carbon graphite, and 0.34V for the combination between aluminum and carbon graphite averagely. The MFC system can also  decrease the organic load parameter of wastewater as much as total Nitrogen was 61%, BOD 30.11%, COD 59.34%, and total Nitrogen Ammonia 12.45%. The increasing of activated sludge biomass occurred on the last observation with MLSS and MLVSS values respectively 7,066.67 mg/L and 6,100 mg/L.

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