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

Hung Ghun Ding; Wei Sun; Jing Chie Lin; Sheng Wei Lee; Jason Shian Ching Jang; I Ming Hung; Kai Ti Hsu; Kan Rong Lee

doi:10.4028/www.scientific.net/SSP.304.67

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HomeSolid State PhenomenaSolid State Phenomena Vol. 304Novel Cathodes Consisting of La3Ni2O7+δ Mixed with...

Novel Cathodes Consisting of La₃Ni₂O_7+δ Mixed with Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ for Proton-Conductive Solid Oxide Fuel Cells (p-SOFCs)

Abstract:

This work studied on the development of novel cathodes for proton-conductive solid oxide fuel cells (p-SOFCs) made of powders La₃Ni₂O_7+δ (LNO2) mixed with Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-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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Periodical:

Solid State Phenomena (Volume 304)

Pages:

67-72

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.304.67

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Online since:

May 2020

Authors:

Hung Ghun Ding, Wei Sun, Jing Chie Lin*, Sheng Wei Lee, Jason Shian Ching Jang, I Ming Hung, Kai Ti Hsu, Kan Rong Lee

Keywords:

Barium Strontium Cobalt Ferrite, Combustion Process, Lanthanum Nickel Oxide, Novel Cathode, Proton-Conductive Solid Oxide Fuel Cells

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