Defect formation and mechanical stability of perovskites based on LaCrO3 for solid oxide fuel cells (SOFC)

In this short review article, all generations of solid oxide fuel cells are discussed in detail. Special attention was paid to solid oxide fuel cells on a supporting metal base. Structures with a metal base are of great interest due to the possibility of quick start, greater reliability, mechanical stability and resistance to thermal cycling. The advantages and disadvantages of metal supports based on Ni, FeNi, NiCrAlY and ferritic stainless steel were discussed in detail. The analysis of the work of leading scientists of the world on this topic research. Based on these analyzes, it is important to note that at present, solid oxide fuel cells based on a Ni-Al carrier is the most promising and economically efficient in the world.

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The Development of Current Collection in Micro-Tubular Solid Oxide Fuel Cells—A Review

Applied Sciences ◽

10.3390/app11031077 ◽

2021 ◽

Vol 11 (3) ◽

pp. 1077

Author(s):

Oujen Hodjati-Pugh ◽

Aman Dhir ◽

Robert Steinberger-Wilckens

Keyword(s):

Fuel Cells ◽

Solid Oxide Fuel Cells ◽

Power Density ◽

Mechanical Stability ◽

Current Collector ◽

Solid Oxide ◽

Oxide Fuel ◽

Current Collection ◽

Start Up

Micro-tubular solid oxide fuel cells (µT-SOFCs) are suited to a broad range of applications with power demands ranging from a few watts to several hundred watts. µT-SOFCs possess inherently favourable characteristics over alternate configurations such as high thermo-mechanical stability, high volumetric power density and rapid start-up times, lending them particular value for use in portable applications. Efficient current collection and interconnection constitute a bottleneck in the progression of the technology. The development of current collector designs and configuration reported in the literature since the inception of the technology are the focus of this study.

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The Effect of Ferroelasticity of La1-XSrxCo1-YFeyO3- on the Mechanical Stability of Solid Oxide Fuel Cells

ECS Transactions ◽

10.1149/05701.0635ecst ◽

2013 ◽

Vol 57 (1) ◽

pp. 635-642 ◽

Cited By ~ 7

Author(s):

Y. Kimura ◽

J. Tolchard ◽

M.-A. Einarsrud ◽

T. Grande ◽

K. Amezawa ◽

...

Keyword(s):

Fuel Cells ◽

Solid Oxide Fuel Cells ◽

Mechanical Stability ◽

Solid Oxide ◽

Oxide Fuel

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Thermo-mechanical stability of multi-scale-architectured thin-film-based solid oxide fuel cells assessed by thermal cycling tests

Journal of Power Sources ◽

10.1016/j.jpowsour.2013.10.101 ◽

2014 ◽

Vol 249 ◽

pp. 125-130 ◽

Cited By ~ 30

Author(s):

Ho-Sung Noh ◽

Kyung Joong Yoon ◽

Byung-Kook Kim ◽

Hae-June Je ◽

Hae-Weon Lee ◽

...

Keyword(s):

Thin Film ◽

Fuel Cells ◽

Solid Oxide Fuel Cells ◽

Thermal Cycling ◽

Mechanical Stability ◽

Solid Oxide ◽

Oxide Fuel ◽

Multi Scale

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Mayenite Electrides and Their Doped Forms for Oxygen Reduction Reaction in Solid Oxide Fuel Cells

Energies ◽

10.3390/en13184978 ◽

2020 ◽

Vol 13 (18) ◽

pp. 4978

Author(s):

Navaratnarajah Kuganathan ◽

Ruslan V. Vovk ◽

Alexander Chroneos

Keyword(s):

Fuel Cells ◽

Solid Oxide Fuel Cells ◽

Oxygen Reduction Reaction ◽

Oxygen Reduction ◽

Density Functional ◽

Mechanical Stability ◽

Electronic Conductivity ◽

Reduction Reaction ◽

Solid Oxide ◽

Oxide Fuel

The oxygen reduction reaction is an important reaction at the cathode in solid oxide fuel cells. Materials that exhibit high chemical and mechanical stability, high ionic and electronic conductivity, and are non-toxic are of great interest as cathodes for the reduction of oxygen. Here, we use density functional theory simulations to examine the efficacy of 12CaO·7Al2O3 and 12SrO·7Al2O3 electrides and their doped forms for the conversion of O2 gas to form O2− in their nanocages via encapsulation. Calculations show that encapsulation is exoergic in the un-doped electrides, and the formation of O2− is confirmed by the charge analysis. A stronger encapsulation is noted for C12A7 electride than the S12A7 electride. The C12A7 electride doped with B or Ga also exhibits exoergic encapsulation, but its encapsulation energy is slightly lower than that calculated for the un-doped C12A7 electride. There is an enhancement in the encapsulation for the S12A7 electride doped with B compared to its un-doped form. Doping of Ga in S12A7 electride exhibits only a very small change in the encapsulation with respect to its un-doped form. The present results can be of interest in the design of cathode material for solid oxide fuel cells.

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