Layered LnBaCo2O5+δ perovskite cathodes for solid oxide fuel cells: an overview and perspective

2015 ◽  
Vol 3 (48) ◽  
pp. 24195-24210 ◽  
Author(s):  
Jung-Hyun Kim ◽  
Arumugam Manthiram
Keyword(s):  
Crystal Structure ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Recent Progress ◽  
Operating Temperature ◽  
Solid Oxide ◽  
Layered Perovskite ◽  
Oxide Fuel ◽  
Composition Properties ◽  
A Site

Aligned with an ever growing interest to reduce the operating temperature of solid oxide fuel cells (SOFCs), the A-site ordered LnBaCo2O5+δ layered perovskite family has been actively investigated as cathodes during the last decade. This review aims to provide the recent progress in the LnBaCo2O5+δ family with regard to crystal structure, chemical composition, properties, performances, and chemical stability.

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.

scholarly journals Recent Progress in Semiconductor-Ionic Conductor Nanomaterial as a Membrane for Low-Temperature Solid Oxide Fuel Cells

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2290
Author(s):  
Yuzheng Lu ◽  
Youquan Mi ◽  
Junjiao Li ◽  
Fenghua Qi ◽  
Senlin Yan ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Low Temperature ◽  
Solid Oxide Fuel Cells ◽  
Recent Progress ◽  
Operating Temperature ◽  
Critical Role ◽  
Ionic Conductor ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Ionic Conductors

Reducing the operating temperature of Solid Oxide Fuel Cells (SOFCs) to 300–600 °C is a great challenge for the development of SOFC. Among the extensive research and development (R&D) efforts that have been done on lowering the operating temperature of SOFCs, nanomaterials have played a critical role in improving ion transportation in electrolytes and facilitating electrochemical catalyzation of the electrodes. This work reviews recent progress in lowering the temperature of SOFCs by using semiconductor-ionic conductor nanomaterial, which is typically a composition of semiconductor and ionic conductor, as a membrane. The historical development, as well as the working mechanism of semiconductor-ionic membrane fuel cell (SIMFC), is discussed. Besides, the development in the application of nanostructured pure ionic conductors, semiconductors, and nanocomposites of semiconductors and ionic conductors as the membrane is highlighted. The method of using nano-structured semiconductor-ionic conductors as a membrane has been proved to successfully exhibit a significant enhancement in the ionic conductivity and power density of SOFCs at low temperatures and provides a new way to develop low-temperature SOFCs.

Defective Sr0.9Mo0.9O3-δ perovskites with exsolved Ni nanoparticles as high-performance composite anodes for solid-oxide fuel cells

2021 ◽  
Author(s):  
Ana Laura Larralde ◽  
Loreto Troncoso ◽  
M. Consuelo Alvarez-Galvan ◽  
Vanessa Cascos ◽  
Maria Teresa Fernandez-Diaz ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Anode Material ◽  
High Performance ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Ni Nanoparticles ◽  
High Performance Composite ◽  
Composite Anodes ◽  
A Site

An A-site deficient perovskite with metallic Ni in exsolution, Ni-Sr0.9Mo0.9O3-δ, has been prepared, characterized and tested as an anode material in intermediate-temperature solid-oxide fuel cells (IT-SOFCs). It was obtained by...

Achieving Performance and Longevity with Butane-operated Low-temperature Solid Oxide Fuel Cells using Low-Cost Cu and CeO2 Catalysts

2021 ◽  
Author(s):  
Cam-Anh Thieu ◽  
Sungeun Yang ◽  
Ho-Il Ji ◽  
Hyoungchul Kim ◽  
Kyung Joong Yoon ◽  
...  
Keyword(s):  
Thin Film ◽  
Fuel Cells ◽  
Low Temperature ◽  
Solid Oxide Fuel Cells ◽  
High Efficiency ◽  
Operating Temperature ◽  
Low Cost ◽  
Solid Oxide ◽  
Oxide Fuel

Thin-film solid oxide fuel cells (TF-SOFCs) effectively lower the operating temperature of typical solid oxide fuel cells (SOFCs) below 600 °C, while maintaining high efficiency and using low-cost catalyst. But...

Properties of A-site nonstoichiometry (Pr0.4)xSr0.6Co0.2Fe0.7Nb0.1O3−σ (0.9 ≤ x ≤ 1.1) as symmetrical electrode material for solid oxide fuel cells

2014 ◽  
Vol 248 ◽  
pp. 163-171 ◽  
Author(s):  
Peng Zhang ◽  
Guoqing Guan ◽  
Deni S. Khaerudini ◽  
Xiaogang Hao ◽  
Minfang Han ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Electrode Material ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
A Site
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