scholarly journals Strontium And Iron Substituted Lanthanum Nickelate As Cathode Material In Solid Oxide Fuel Cells

2016 ◽  
Vol 1 (1) ◽  
pp. 64 ◽  
Author(s):  
A.R. Gilev ◽  
E.A. Kiselev ◽  
V.A. Cherepanov
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Oxygen Nonstoichiometry ◽  
Solid Oxide ◽  
Maximum Power ◽  
Total Conductivity ◽  
Oxide Fuel ◽  
Maximum Power Density ◽  
Lanthanum Nickelate ◽  
Power Densities

<p>The MIEC La<sub>1.5</sub>Sr<sub>0.5</sub>Ni<sub>1-y</sub>Fe<sub>y</sub>O<sub>4</sub> (<em>y</em>=0.1-0.4) oxides have been studied as cathode materials with La<sub>0.88</sub>Sr<sub>0.12</sub>Ga<sub>0.82</sub>Mg<sub>0.18</sub>O<sub>3-δ</sub> (LSGM) electrolyte. Total conductivity, thermal expansion, oxygen nonstoichiometry, and chemical compatibility with LSGM and Ce<sub>0.8</sub>Sm<sub>0.2</sub>O<sub>1.9</sub> (SDC) were determined. The following fuel cells were tested: La<sub>1.5</sub>Sr<sub>0.5</sub>Ni<sub>1-y</sub>Fe<sub>y</sub>O<sub>4</sub> (<em>y</em>=0.1, 0.2, 0.3, 0.4)/SDC/LSGM/Sr<sub>2</sub>N<sub>0.75</sub>Mg<sub>0.25</sub>MoO<sub>6</sub> (SNMM) and La<sub>1.5</sub>Sr<sub>0.5</sub>Ni<sub>0.6</sub>Fe<sub>0.4</sub>O<sub>4</sub>/SDC/LSGM/SDC/NiO-SDC. For the former, the maximum power densities were 218, 274, 222, and 390 mW/cm<sup>2</sup> at 850 °C in case of <em>y</em> equal to 0.1, 0.2, 0.3, and 0.4, respectively. The latter cell showed maximum power density of 341 mW/cm<sup>2</sup> at 850°C.</p>

Low-Temperature Operating Micro Solid Oxide Fuel Cells with Perovskite-type Proton Conductors

2011 ◽  
Vol 1330 ◽  
Author(s):  
Hiroo Yugami ◽  
Kensuke Kubota ◽  
Yu Inagaki ◽  
Fumitada Iguchi ◽  
Shuji Tanaka ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Low Temperature ◽  
Solid Oxide Fuel Cells ◽  
Power Density ◽  
Proton Conductors ◽  
Solid Oxide ◽  
Maximum Power ◽  
Barium Zirconate ◽  
Oxide Fuel ◽  
Maximum Power Density

ABSTRACTMicro-solid oxide fuel cells (Micro-SOFCs) with yttrium-doped barium zirconate (BZY) and strontium and cobalt-doped lanthanum scandate (LSScCo) electrolytes were fabricated for low-temperature operation at 300 °C. The micro-SOFC with a BZY electrolyte could operate at 300 °C with an open circuit voltage (OCV) of 1.08 V and a maximum power density of 2.8 mW/cm2. The micro-SOFC with a LSScCo electrolyte could operate at 370 °C; its OCV was about 0.8 V, and its maximum power density was 0.6 mW/cm2. Electrochemical impedance spectroscopy revealed that the electrolyte resistance in both the micro-SOFCs was lower than 0.1 Ωcm2, and almost all of the resistance was due to anode and cathode reactions. Although the obtained maximum power density was not sufficient for practical applications, improvement of electrodes will make these micro-SOFCs promising candidates for power sources of mobile electronic devices.

scholarly journals High performance of microtubular solid oxide fuel cells using Nd2NiO4+δ-based composite cathodes

2014 ◽  
Vol 2 (25) ◽  
pp. 9764-9770 ◽  
Author(s):  
Miguel A. Laguna-Bercero ◽  
Amir R. Hanifi ◽  
Hernán Monzón ◽  
Joshua Cunningham ◽  
Thomas H. Etsell ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
High Performance ◽  
Solid Oxide ◽  
Maximum Power ◽  
Alternative Solution ◽  
Oxide Fuel ◽  
Composite Cathodes ◽  
Power Densities

Cathodes of porous YSZ supports infiltrated with Nd2NiO4+δ nanoparticles are offered as an alternative solution for IT-SOFC cathodes, presenting maximum power densities of 0.4 W cm−2 at 600 °C.

Lanthanum Nickelate Infiltration into Porous Gd-Doped Ceria As Cathode for Solid Oxide Fuel Cells

2015 ◽  
Vol 68 (1) ◽  
pp. 837-845 ◽  
Author(s):  
C. Nicollet ◽  
A. Flura ◽  
V. Vibhu ◽  
A. Rougier ◽  
J.-M. Bassat ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Doped Ceria ◽  
Oxide Fuel ◽  
Lanthanum Nickelate

Compositional Effect of Thin Electrode Functional Layers on the Performance of Solid Oxide Fuel Cells

2011 ◽  
Vol 8 (6) ◽  
Author(s):  
Hyeon-Cheol Park ◽  
Fatih Dogan
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Electrode Materials ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Functional Layer ◽  
Ohmic Resistance ◽  
Anode Support ◽  
The Relationship ◽  
Power Densities

Anode supported solid oxide fuel cells (SOFC) were fabricated by addition of various metal oxides such as Fe2O3, Co3O4 and TiO2 to thin anode functional layers between the electrolyte (yttria-stabilized zirconia, YSZ) and electrode materials (anode support: YSZ-NiO). Effect of the additives on the power density and impedance spectra of SOFC was studied. It was found that addition of Co3O4 to anode functional layer was most effective towards improvement of power densities and reduction of the total ohmic resistance as well as the area specific resistance of the cells, while addition of TiO2 to anode functional layer resulted in lower power densities. Possible mechanisms on the relationship between the additives in electrode functional layers and the cell performance were briefly discussed.

scholarly journals Improved Tolerance of Lanthanum Nickelate (La2NiO4+δ) Cathodes to Chromium Poisoning Under Current Load in Solid Oxide Fuel Cells

JOM ◽  
2019 ◽  
Vol 71 (11) ◽  
pp. 3848-3858 ◽  
Author(s):  
Yiwen Gong ◽  
Ruofan Wang ◽  
Jane Banner ◽  
Soumendra N. Basu ◽  
Uday B. Pal ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Current Load ◽  
Lanthanum Nickelate ◽  
Chromium Poisoning

Novel Cathodes Consisting of La3Ni2O7+δ Mixed with Ba0.5Sr0.5Co0.8Fe0.2O3-δ for Proton-Conductive Solid Oxide Fuel Cells (p-SOFCs)

2020 ◽  
Vol 304 ◽  
pp. 67-72
Author(s):  
Hung Ghun Ding ◽  
Wei Sun ◽  
Jing Chie Lin ◽  
Sheng Wei Lee ◽  
Jason Shian Ching Jang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Electron Microscope ◽  
Solid Oxide Fuel Cells ◽  
Air Transportation ◽  
Reduction Reaction ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Maximum Power Density ◽  
X Ray ◽  
Scanning Electron

This work studied on the development of novel cathodes for proton-conductive solid oxide fuel cells (p-SOFCs) made of powders La3Ni2O7+δ (LNO2) mixed with Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF). The cathodes were constructed by a skeleton of LNO2 whose surface coated by BSCF in the ratio (in wt. %) of LNO2/BSCF varying in 15/85, 30/70, 50/50, 75/25 (denote as LN15, LN30, LN50, and LN75, respectively). The skeleton was responsible for carrier conduction and air transportation; the BSCF coating was responsible for catalytic oxygen reduction reaction (ORR). Nascent powders directly collected from combustion were subject to examination by scanning electron microscope (SEM) and X-ray diffractometer (XRD) and further calcination. Well crystalized with highly pure powders obtained post their calcination at 900 °C. Performing the button cells by means of I-V testing at 600, 700 and 800°C, the data of maximum power density () depicted the order LN75 < BSCF < LN15 < LN30< LN50 regardless of temperatures. Among all the specimens, LN50 could be the best cathode candidate for P-SOFCs.

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