Novel ReBaCo1.5Mn0.5O5+δ (Re: La, Pr, Nd, Sm, Gd and Y) perovskite oxide: influence of manganese doping on the crystal structure, oxygen nonstoichiometry, thermal expansion, transport properties, and application as a cathode material in solid oxide fuel cells

2018 ◽  
Vol 6 (27) ◽  
pp. 13271-13285 ◽  
Author(s):  
Anna Olszewska ◽  
Zhihong Du ◽  
Konrad Świerczek ◽  
Hailei Zhao ◽  
Bogdan Dabrowski
Keyword(s):  
Crystal Structure ◽  
Thermal Expansion ◽  
Solid Oxide Fuel Cells ◽  
Cathode Material ◽  
Transport Properties ◽  
Oxygen Nonstoichiometry ◽  
Solid Oxide ◽  
Perovskite Oxide ◽  
Oxide Fuel ◽  
Manganese Doping

Introduction of Mn, on the order of 0.5 in ReBaCo1.5Mn0.5O5+δ, allows to develop a very good cathode material for SOFCs, as shown for Re = Nd.

scholarly journals PrBaCo2O6−δ-Ce0.8Sm0.2O1.9 Composite Cathodes for Intermediate-Temperature Solid Oxide Fuel Cells: Stability and Cation Interdiffusion

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 417 ◽  
Author(s):  
Dmitry Tsvetkov ◽  
Nadezhda Tsvetkova ◽  
Ivan Ivanov ◽  
Dmitry Malyshkin ◽  
Vladimir Sereda ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Cathode Material ◽  
Chemical Interaction ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxide Fuel ◽  
Composite Cathodes ◽  
Cation Interdiffusion

The single-phase oxide PrBaCo2O6−δ and composites (100 − y)PrBaCo2O6−δ-yCe0.8Sm0.2O1.9 (y = 10–30 wt.%) were investigated as cathode materials for intermediate-temperature solid oxide fuel cells. The chemical compatibility, cation interdiffusion, thermal expansion and dc conductivity were studied. As a result, strong interdiffusion of Pr and Sm was found between PrBaCo2O6−δ and Ce0.8Sm0.2O1.9. This leads to only insignificantly decreasing thermal expansion coefficient of composite with increasing fraction of Ce0.8Sm0.2O1.9 and, thus, mixing PrBaCo2O6−δ with Ce0.8Sm0.2O1.9 does not improve thermal expansion behavior of the cathode material. Moreover, formation of poorly-conducting BaCeO3, caused by chemical interaction between the double perovskite and doped ceria, was shown to lead to pronounced drop in the electrical conductivity of the composite cathode material with increasing Ce0.8Sm0.2O1.9 content.

INVESTIGATION OF GdBaCo2-xFexO5.5-δ AS A CATHODE MATERIAL FOR INTERMEDIATE TEMPERATURE SOLID OXIDE FUEL CELLS

2011 ◽  
Vol 04 (02) ◽  
pp. 157-160 ◽  
Author(s):  
ANDRZEJ KULKA ◽  
YANG HU ◽  
GUILHEM DEZANNEAU ◽  
JANINA MOLENDA
Keyword(s):  
Crystal Structure ◽  
Electrical Conductivity ◽  
Solid Oxide Fuel Cells ◽  
Oxygen Nonstoichiometry ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Layered Perovskite ◽  
Oxide Fuel ◽  
Perovskite Materials ◽  
And Performance

In this work, we present an evaluation of the layered perovskite materials with chemical composition GdBaCo 2-x Fe x O 5.5-δ (x = 0.0, 0.3, 0.6) as a cathode materials for intermediate temperature solid oxide fuel cell (IT-SOFC). We first present results concerning their crystal structure and oxygen nonstoichiometry, and then give results concerning their electrical conductivity and performance in button-type SOFCs.

scholarly journals Crystal structure, thermal expansion and long-term behaviors of SmBaCoO5+δ as cathode for intermediate-temperature solid oxide fuel cells

2018 ◽  
Vol 215 ◽  
pp. 01026
Author(s):  
Adi Subardi ◽  
Yen-Pei Fu
Keyword(s):  
Crystal Structure ◽  
Thermal Expansion ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Polarization Resistance ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Layered Perovskite ◽  
Oxide Fuel

SmBaCo2O5+δ (SBC) was studied as cathode material for intermediate-temperature solid oxide fuel cells (IT-SOFCs). The crystal structure, thermal expansion behavior, and electrochemical performance with long-term operation of SBC were characterized. An orthorhombic layered perovskite structure was observed in SBC cathode by a GSAS program for refinement. The average thermal expansion coefficient (TEC) is 21.6 x 10-6K-1 in the temperature range of 100oC-800oC. For long-term testing, the polarization resistance of SBC cathode increases gradually from 25.77 Ω cm2 for 2 h to 38.77 Ω cm2 for 96 h at 600°C, and an increasing-rate for polarization resistance is around 13,8% h-1. Based on the electrochemical properties, SBC cathode with mixed ionic and electronic conductor (MIEC) behavior is a potential cathode for intermediate temperature solid oxide fuel cells based on a SDC electrolyte.

Characteristics of YCoO3-type perovskite oxide and application as an SOFC cathode

2021 ◽  
Vol 9 (6) ◽  
pp. 3584-3588
Author(s):  
Takaaki Sakai ◽  
Masako Ogushi ◽  
Kohei Hosoi ◽  
Atsushi Inoishi ◽  
Hidehisa Hagiwara ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Cathode Material ◽  
Solid Oxide ◽  
Perovskite Oxide ◽  
Oxide Fuel ◽  
Sofc Cathode

YCoO3 is discussed as a novel cathode material for solid oxide fuel cells (SOFCs).

Synthesis and thermal expansion property of (Ba0.5Sr0.5)0.9Bi0.1Co0.8Fe0.2O3−δ cathode materials for IT-SOFCs

RSC Advances ◽  
2014 ◽  
Vol 4 (93) ◽  
pp. 51653-51657
Author(s):  
Dechuan Li ◽  
Guangping Zhu ◽  
Yong-xing Zhang ◽  
Yijun Yang ◽  
Changbao Han
Keyword(s):  
Thermal Expansion ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Cathode Material ◽  
Cathode Materials ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxide Fuel ◽  
Thermal Expansion Property ◽  
Expansion Property

Perovskite cathode material, (Ba0.5Sr0.5)0.9Bi0.1Co0.8Fe0.2O3−δ (BSBCF-0.1), was synthesized by a combined citrate–EDTA complexing method for intermediate temperature solid oxide fuel cells.

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