Electrolyte materials for intermediate-temperature solid oxide fuel cells
| Autor: | Ran Ran, Zongping Shao, Huangang Shi, Chao Su, Jiafeng Cao |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Oxide Oxygen ion-conducting 02 engineering and technology Electrolyte Conductivity 010402 general chemistry Electrochemistry 01 natural sciences chemistry.chemical_compound Operating temperature Solid oxide fuel cell lcsh:TA401-492 Energy transformation General Materials Science Dual ion-conducting Polarization (electrochemistry) 021001 nanoscience & nanotechnology 0104 chemical sciences Chemical energy Chemical engineering chemistry lcsh:Materials of engineering and construction. Mechanics of materials Proton-conducting 0210 nano-technology |
| Zdroj: | Progress in Natural Science: Materials International, Vol 30, Iss 6, Pp 764-774 (2020) |
| ISSN: | 1002-0071 |
| Popis: | Solid oxide fuel cells (SOFCs) directly convert chemical energy that is stored in a wide range of fuels into direct current electricity, with high efficiency and low emissions, via a series of electrochemical reactions at elevated operating temperatures (generally 400–1000 °C). During such an energy conversion process, the properties of electrolyte materials determine the working principle and operating temperature of the SOFC. When considering the cost and stability, lowering the operating temperature is critical, and this has become one of the developing trends in SOFC research. The key point for realizing a reduction in operating temperature is to maintain low ohmic resistance of the electrolyte and low polarization resistance of the electrodes. In practice, the mechanical and chemical stability of the electrolyte is also a big concern. According to their differences in ion conduction mechanisms, there are three main types of electrolyte material available, namely, oxygen ion-conducting, proton-conducting, and dual ion-conducting electrolytes. In this review, we give a comprehensive summary of the recent advances in the development of these three types of electrolyte material for intermediate-temperature SOFCs. Both conductivity and stability are emphasized. In conclusion, the current challenges and future development prospects are discussed. |
| Databáze: | OpenAIRE |
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