Oxygen vacancy-engineered cobalt-free Ruddlesden-Popper cathode with excellent CO2 tolerance for solid oxide fuel cells

2021 ◽  
Vol 497 ◽  
pp. 229872
Author(s):  
Daoming Huan ◽  
Lu Zhang ◽  
Kang Zhu ◽  
Xinyu Li ◽  
Nai Shi ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Oxygen Vacancy ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Co2 Tolerance

Ionic Conductivity in Laco1-XMgX03-δ: A Potential Cathode Material for Solid Oxide Fuel Cells

1995 ◽  
Vol 393 ◽  
Author(s):  
Anbin Yu ◽  
Sossina M. Haile
Keyword(s):  
Fuel Cells ◽  
Ionic Conductivity ◽  
Oxygen Vacancy ◽  
Solid Oxide Fuel Cells ◽  
Cathode Material ◽  
Triple Point ◽  
Vacancy Concentration ◽  
Solid Oxide ◽  
Oxygen Vacancy Concentration ◽  
Oxide Fuel

ABSTRACTA serious concern with present designs of solid oxide fuel cells is the requirement that “triple-point junctions” exist, sites at which the cathode, electrolyte and oxidizing gas are in simultaneous contact. Only at these junctions can the cathode catalyze the reduction of oxygen into 0= ions and initiate their subsequent transport through the electrolyte. Enhanced ionic conductivity in the cathode material may increase the surface area over which reduction can take place and relax the triple-point constraint. To this end, we have examined the electrical and structural properties of LaCo1-xMgx03-δ materials under various atmospheres. Oxygen ion transport in this and related ABO3 perovskites takes place via oxygen vacancy migration. We have opted to investigate the effect of Mg doping on the transition metal site in an effort to maintain a significant oxygen vacancy concentration in oxidizing atmospheres (as would be encountered during fuel cell operation) and to isolate the effects of A- and B-site doping.

Understanding the favorable CO2 tolerance of Ca-doped LaFeO3 perovskite cathode for solid oxide fuel cells

2022 ◽  
Vol 521 ◽  
pp. 230907
Author(s):  
Mingchao Su ◽  
Daoming Huan ◽  
Xueyu Hu ◽  
Kang Zhu ◽  
Ranran Peng ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Co2 Tolerance

A high-performance, cobalt-free cathode for intermediate-temperature solid oxide fuel cells with excellent CO2 tolerance

2016 ◽  
Vol 319 ◽  
pp. 178-184 ◽  
Author(s):  
Yun-fei Bu ◽  
Qin Zhong ◽  
Dong-Chang Chen ◽  
Yu Chen ◽  
Samson Yuxiu Lai ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
High Performance ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxide Fuel ◽  
Co2 Tolerance
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