Ceramic Nanocomposites for Solid Oxide Fuel Cells

Lim, Hui Hui; Sulistya, Erick; Wong, May Yuan; Salamatinia, Babak; Horri, Bahman Amini

doi:10.1007/978-3-319-49512-5_6

Cited by 7 publications

(16 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Perovskite composites with a typical ABO 3 structure are the most common materials used for the fabrication of cathode. In this structure, A site cations usually have larger ionic radii with a lower oxidation state compared to the cations standing for B site [28,44]. Lanthanum strontium manganite (LSM) is one of the most common perovskite materials used to fabricate high-temperature SOFC cathodes.…”

Section: State-of-the-art Sofc Materialsmentioning

confidence: 99%

“…Typically, an ideal SOFC cathode material should provide a high electronic and ionic conductivity, high catalytic activity for oxygen reduction reaction, sufficient porosity, good chemical and thermal stability, matching TEC, and high spatial TPB density. The cathode half-cell reaction can be written as below [27,28,31,33]:…”

mentioning

confidence: 99%

“…In this case, the open-circuit voltage (E OCV ) can be estimated using the Nernst equation as follows [27,28,31,33]:…”

mentioning

confidence: 99%

“…Moreover, crystal structure plays an important role in enhancing the oxide ion conductivity; therefore, the larger interionic space, the higher level of point defect disorder, and lower migration enthalpy [8]. The SOFC electrolyte materials should satisfy several requirements such as providing a high oxide ion conductivity (at least 0.1 S•cm −1 ) at the cell operating temperature, enough thermochemical stability in the cell red-ox environment, good mechanical strength (fracture resistance > 400 MPa), high density, minimal volatilization, minimal ohmic loss, negligible electronic conductivity, and a proper TEC value compatible with the other cell components [27,28,31]. Figure 1a schematically shows the fundamental operation of a SOFC using various fuels.…”

mentioning

confidence: 99%

“…Energies 2021, 14, 1280 6 of 53 also been reported that doping the perovskite composites with proper cations can improve their TEC values, particularly when it targets affecting the structural A site [28,47]. Doping with transition metal cations is another approach applied for improving the characteristics of perovskites.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Progress in Material Development for Low-Temperature Solid Oxide Fuel Cells: A Review

Vostakola

Horri

2021

Energies

Self Cite

View full text Add to dashboard Cite

Solid oxide fuel cells (SOFCs) have been considered as promising candidates to tackle the need for sustainable and efficient energy conversion devices. However, the current operating temperature of SOFCs poses critical challenges relating to the costs of fabrication and materials selection. To overcome these issues, many attempts have been made by the SOFC research and manufacturing communities for lowering the operating temperature to intermediate ranges (600–800 °C) and even lower temperatures (below 600 °C). Despite the interesting success and technical advantages obtained with the low-temperature SOFC, on the other hand, the cell operation at low temperature could noticeably increase the electrolyte ohmic loss and the polarization losses of the electrode that cause a decrease in the overall cell performance and energy conversion efficiency. In addition, the electrolyte ionic conductivity exponentially decreases with a decrease in operating temperature based on the Arrhenius conduction equation for semiconductors. To address these challenges, a variety of materials and fabrication methods have been developed in the past few years which are the subject of this critical review. Therefore, this paper focuses on the recent advances in the development of new low-temperature SOFCs materials, especially low-temperature electrolytes and electrodes with improved electrochemical properties, as well as summarizing the matching current collectors and sealants for the low-temperature region. Different strategies for improving the cell efficiency, the impact of operating variables on the performance of SOFCs, and the available choice of stack designs, as well as the costing factors, operational limits, and performance prospects, have been briefly summarized in this work.

show abstract

Section: State-of-the-art Sofc Materialsmentioning

confidence: 99%

mentioning

confidence: 99%

“…In this case, the open-circuit voltage (E OCV ) can be estimated using the Nernst equation as follows [27,28,31,33]:…”

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%