Effects of Cobalt Addition on the Catalytic Activity of the Ni-YSZ Anode Functional Layer and the Electrochemical Performance of Solid Oxide Fuel Cells

2014 ◽  
Vol 6 (18) ◽  
pp. 16131-16139 ◽  
Author(s):  
Ting Guo ◽  
Xiaolei Dong ◽  
Mandar M. Shirolkar ◽  
Xiao Song ◽  
Meng Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Fuel Cells ◽  
Electrochemical Performance ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Functional Layer ◽  
Cobalt Addition

Effect of the Current Collector on Performance of Anode-Supported Microtubular Solid Oxide Fuel Cells

2015 ◽  
Vol 12 (3) ◽  
Author(s):  
Michele Casarin ◽  
Vincenzo M. Sglavo
Keyword(s):  
Catalytic Activity ◽  
Fuel Cells ◽  
Electrochemical Performance ◽  
Solid Oxide Fuel Cells ◽  
Performance Improvement ◽  
Hydrogen Oxidation ◽  
Unit Length ◽  
Current Collector ◽  
Solid Oxide ◽  
Oxide Fuel

Microtubular anode-supported solid oxide fuel cells (μt-SOFC) were created with a metallic coil embedded in the anode to act as current collector. The electrochemical performance was experimentally examined by comparing the power density (PD) of μt-SOFC with embedded coils of different turns per unit length and composition (nickel and palladium). It is shown that an increase in the turns per unit length results in a proportional current density increase and in a quadratic increment of PD. Additional performance improvement is found for the cell with palladium current collector due to the higher catalytic activity for hydrogen oxidation.

Influence of cathode functional layer composition on electrochemical performance of solid oxide fuel cells

2016 ◽  
Vol 20 (9) ◽  
pp. 2575-2580 ◽  
Author(s):  
Antônio de Pádua Lima Fernandes ◽  
Eric Marsalha Garcia ◽  
Rubens Moreira de Almeida ◽  
Hosane Aparecida Taroco ◽  
Edyth Priscilla Campos Silva ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Electrochemical Performance ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Functional Layer ◽  
Layer Composition

Controlling Porosity of Anode Support in Tubular Solid Oxide Fuel Cells by Freeze Casting

2020 ◽  
Vol 17 (4) ◽  
Author(s):  
Benjamin Emley ◽  
Dhruba Panthi ◽  
Yanhai Du ◽  
Yan Yao
Keyword(s):  
Fuel Cells ◽  
Electrochemical Performance ◽  
Solid Oxide Fuel Cells ◽  
Concentration Polarization ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Freeze Casting ◽  
Lanthanum Strontium Manganite ◽  
Functional Layer ◽  
Anode Support

Abstract Precise porosity control is highly desirable for improving the electrochemical performance of solid oxide fuel cells (SOFCs). Freeze casting is an established method for enabling high bulk porosity in structures and controlling pore orientation. In this study, freeze casting was used to fabricate tubular, anode-supported SOFCs with aligned and varying amounts of porosity by controlling the solids/water ratio in different casting slurries. SOFCs were prepared with a Ni/yttria and scandia stabilized zirconia (ScYSZ) anode support (AS), an anode functional layer (AFL), a ScYSZ electrolyte, a lanthanum strontium manganite (LSM)/ScYSZ cathode interlayer (CIL), and an LSM cathode. The permeability of the anode support was found to increase from 1.4 × 10−2 to 1.8 × 10−2 m2 as porosity was increased from 57 to 64 vol%, while the total cell resistance decreased by 35% from 0.93 to 0.60 Ohm cm2. When evaluated with 30 vol% H2 as the fuel at 800 °C, the decrease of concentration polarization enabled an increase in electrochemical performance by 42% from 0.35 to 0.50 W/cm2 as the porosity in the anode support was increased. Mechanical strength characterization using a three-point method showed there is a practical upper limit of the amount of porosity that can be designed into the anode support. This work paves a way for controlling porosity by freeze casting and understanding the correlation between porosity and concentration polarization losses in SOFCs.

Effect of an Anode Functional Layer on Cell Performance of Anode-Supported Solid Oxide Fuel Cells by a Decalcomania Method

2013 ◽  
Vol 51 (2) ◽  
pp. 125-130 ◽  
Author(s):  
Sun-Min Park ◽  
Hae-Ran Cho ◽  
Byung-Hyun Choi ◽  
Yong-Tae An ◽  
Ja-Bin Koo ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Cell Performance ◽  
Oxide Fuel ◽  
Functional Layer
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