Application of Rape Pollen in Anode Substrates of Solid Oxide Fuel Cell

2012 ◽  
Vol 512-515 ◽  
pp. 1579-1583
Author(s):  
Hui Su ◽  
Ye Fan Wu ◽  
Ling Hong Luo ◽  
Jia Song Zhang ◽  
Guo Yang Sheng

The physical properties and microstructures of supporting anodes are crucial for the performances of the entire SOFCs. In this investigation, the rape pollen was developed as a novel pore-former to improve the properties of the conventional NiO–YSZ(yttria-stabilized zirconia) anode substrate of solid oxide fuel cell. The advantage of using this pore-former over the conventional ones (e.g. polymethyl methacrylate (PMMA), carbon and flour) is that this pore-former had high porosity、global pore shape and uniform pore size distribution in the anode substrates, which are beneficial for rapid transport of the fuel and byproduct. The microstructure was observed by SEM, and the porosity of anode was measured by Archimedes method. The results showed that the optimum weight percent concentration was 15%, correspondingly, porosity was 40.3%, which was suitable for supporting anodes for SOFC application. And the open-circuit voltage (OCV) as high as 1.058V was obtained ,and the maximum power densities of 0.794W/cm2 was achieved at 750°C, respectively, using hydrogen as fuel and ambient air as oxidant.

2010 ◽  
Vol 55 (20) ◽  
pp. 5538-5544 ◽  
Author(s):  
Weiping Pan ◽  
Zhe Lü ◽  
Kongfa Chen ◽  
Xiqiang Huang ◽  
Bo Wei ◽  
...  

Author(s):  
Jung-Hoon Song ◽  
Nigel M. Sammes ◽  
Sun-Il Park ◽  
Seongjae Boo ◽  
Ho-Sung Kim ◽  
...  

A planar anode-supported electrolyte was fabricated using a tape casting method that involved a single step cofiring process. A standard NiO∕8YSZ cermet anode, 8mol% YSZ electrolyte, and a lanthanum strontium manganite cathode were used for the solid oxide fuel cell unit cell. A pressurized cofiring technique allows the creation of a thin layer of dense electrolyte about 10μm without warpage. The open circuit voltage of the unit cell indicated negligible fuel leakage through the electrolyte film due to the dense and crack-free electrolyte layer. An electrochemical test of the unit cell showed a maximum power density up to 0.173W∕cm2 at 900°C. Approximated electrochemical properties, e.g., activation energy, Ohmic resistance, and exchange current density, indicated that the cell performance was significantly influenced by the electrode properties of the unit cell.


2014 ◽  
Vol 87 ◽  
pp. 98-104 ◽  
Author(s):  
Mark Cassidy ◽  
Paul Connor ◽  
Marielle Etches ◽  
Yann Kalecheff ◽  
Marina MacHado ◽  
...  

The Solid Oxide Fuel Cell Roll (SOFCRoll) is a novel design based on a double spiral. Combining structural advantages of tubular geometries with processing advantages of thick film methods, it utilises a single cofiring process. The initial concept used separate tape cast layers which were laminated before rolling. To optimise layer thickness to function, thinner screen printed layers were combined into the tape cast structure in 2nd generation cells. This presented several processing challenges, such as achieving dense electrolyte layers, maintaining porous electrode and current collecting layers and incorporation of integral gas channels. Performance has been promising with open circuit voltages close to 1V and cell power of over 400mW at 800°C, however cracking is still evident. Therefore further iterations are in development where thinner layers are sequentially cast, aiming to improve interfacial bonding and better match plasticity and burn out to reduce cracking. This paper reviews key aspects of understanding and development of the SOFRoll , the challenges that have been tackled and what challenges remain, along with future directions for development and potential applications for this device.


2011 ◽  
Vol 94 (11) ◽  
pp. 3666-3670 ◽  
Author(s):  
Yuzhou Wu ◽  
Dehua Dong ◽  
Ran Ran ◽  
Yao Zeng ◽  
Kun Wang ◽  
...  

2016 ◽  
Vol 41 (20) ◽  
pp. 8533-8541 ◽  
Author(s):  
Yejian Xue ◽  
Wanbing Guan ◽  
Changrong He ◽  
Jianxin Wang ◽  
Wu Liu ◽  
...  

2007 ◽  
Vol 544-545 ◽  
pp. 997-1000 ◽  
Author(s):  
Minako Nagamori ◽  
Yoshihiro Hirata ◽  
Soichiro Sameshima

Terminal voltage, electric power density and overpotential were measured for the solid oxide fuel cell with gadolinium-doped ceria electrolyte (Ce0.8Gd0.2O1.9, GDC), 30 vol% Ni-GDC anode and Pt cathode using a H2 fuel or biogas (CH4 47, CO2 31, H2 19 vol %) at 1073 K. Addition of 1 ppm H2S in the 3vol % H2O-containing H2 fuel gave no change in the open circuit voltage (0.79 - 0.80 V) and the maximum power density (65 - 72 mW/cm2). Furthermore, no reaction between H2S and Ni in the anode was suggested by the thermodynamic calculation. On the other hand, the terminal voltage and electric power density decreased when 1 ppm H2S gas was mixed with the biogas. After the biogas with 1 ppm H2S flowed into the anode for 8 h, the electric power density decreased from 125 to 90 mW/cm2. The reduced electric power density was also recovered by passing 3 vol % H2O-containing H2 fuel for 2 h.


Fuel Cells ◽  
2011 ◽  
Vol 11 (2) ◽  
pp. 172-177 ◽  
Author(s):  
W.-P. Pan ◽  
Z. Lü ◽  
K.-F. Chen ◽  
X.-B. Zhu ◽  
X.-Q. Huang ◽  
...  

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