scholarly journals Performance of NiO/YSZ anode-supported solid oxide fuel cell fueled with landfill gas stream

2020 ◽  
Vol 166 ◽  
pp. 04007
Author(s):  
Cevat Yaman ◽  
Yusuf Kucukaga
Keyword(s):  
Solid Oxide Fuel Cells ◽  
Landfill Gas ◽  
Electrical Energy ◽  
Pilot Scale ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Stabilized Zirconia ◽  
Maximal Power ◽  
Anode Supported Cell ◽  
Study Performance

Generating electrical energy from landfill gas (LFG) is a challenge due to its low conversion efficiency. In this study, performance of a NiO/yttria-stabilized zirconia (NiO-YSZ) anode-supported cell operating with LFG feed stream was evaluated. This study investigated the potential of solid oxide fuel cells (SOFC) to produce electricity from LFG generated in pilot scale anaerobic municipal solid waste bioreactors. During the initial experiments, power generation was achieved in the SOFC with direct feeding of the LFG. Different feed flow rates (10 25 mL/min) and varying temperature conditions (700 800 °C) were also investigated to define the optimal conditions. Experiments were carried out at different feed rates and the successful results obtained from 10 mL/min and 20 mL/min feed speeds. It was also observed that the maximal power values were between 0.10 0.11 Watt/cm2 for all experiments. This study showed that SOFCs can provide significantly higher energy efficiencies than steam engines for LFG conversion into electrical energy.

scholarly journals Compatibility analyses of BICUVOX.10 as a cathode in yttria-stabilized zirconia electrolytes for usage in solid oxide fuel cells

2014 ◽  
Vol 17 (5) ◽  
pp. 1173-1179 ◽  
Author(s):  
Roger Honorato Piva ◽  
Diógenes Honorato Piva ◽  
Marcelo Tramontin Souza ◽  
Márcio Raymundo Morelli
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Yttria Stabilized Zirconia ◽  
Oxide Fuel ◽  
Stabilized Zirconia

Characterization of SOFCS: A Crystallographic Analysis and First Steps towards an Impedance Spectroscopy Approach

2012 ◽  
Vol 727-728 ◽  
pp. 769-774
Author(s):  
A. Ávila ◽  
J. Poveda ◽  
D. Gómez ◽  
D. Hotza ◽  
J. Escobar
Keyword(s):  
Fuel Cells ◽  
Impedance Spectroscopy ◽  
Solid Oxide Fuel Cells ◽  
Electrochemical Impedance ◽  
Electrical Energy ◽  
Crystallographic Analysis ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Major Disadvantage ◽  
Different Temperatures

Solid oxide fuel cells (SOFCs) have emerged as an efficient way to transform chemical energy into electrical energy. However, a major disadvantage of this technology is related to the high temperatures required for SOFC operation. In this way, new materials are necessary to maintain the electrical properties of the cell at intermediate temperatures. Based on these ideas, it is necessary to study both the structural variation of the cells components at different temperatures and their electrochemical behavior. In this work, a crystallographic characterization is presented, which was performed in a commercial SOFC cell using X-ray diffraction (XRD). An equivalent linear electrical model to predict SOFC losses is developed as well. Keywords: Solid oxide fuel cells (SOFCs); AC impedance; Electrochemical impedance spectroscopy (EIS); Equivalent circuit models.

Constrained and Non-Constrained Sintering of Plasma-Sprayed Zirconia Based Electrolytes for SOFCs

2010 ◽  
Vol 65 ◽  
pp. 263-268 ◽  
Author(s):  
Claudia Christenn ◽  
Syed Asif Ansar
Keyword(s):  
Solid Oxide Fuel Cells ◽  
Atmospheric Plasma Spraying ◽  
Solid Oxide ◽  
Yttria Stabilized Zirconia ◽  
Atmospheric Plasma ◽  
Oxide Fuel ◽  
Microstructure Development ◽  
Stabilized Zirconia ◽  
Free Standing ◽  
Plasma Sprayed

Electrolyte layers for solid oxide fuel cells (SOFCs) consisting typically of yttria-stabilized zirconia were prepared using atmospheric plasma spraying in a first step and sintered in a second one. The influence of particle size on sintering kinetics and microstructure development was analyzed by comparison of nanostructured and conventional YSZ layers. Sintering of free-standing coatings differ significantly from that of coatings on substrates.

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