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Research progress of conductivity of nano ScSZ-based electrolyte at medium and low temperature
Received date: 2020-06-26
Online published: 2021-07-08
Solid oxide fuel cell（SOFC） is one of the most promising fuel cells,which is efficient and clean and suitable for a variety of fuel gases.Sc2O3 doped ZrO2（ScSZ） series（including single or binary oxides doped ScSZ） makes zirconia-based electrolyte shows excellent ionic conductivity.The nano-crystallization of ScSZ-based electrolyte has been widely studied due to its excellent electrical properties.However,ScSZ-based electrolyte will undergo phase transition at medium and low tem-perature,resulting in rhombic phase with low conductivity,which affects its ionic conductivity.ScSZ electrolytes doped with single or binary oxides were systematically summarized.The results showed that multi-oxides doped ScSZ could effectively pre-vent from phase transformation at medium and low temperatures,stabilize cubic ScSZ.Nano-crystallization ScSZ based elec-trolytes prepared by different methods could improve the ionic conductivity very well.The development direction of ScSZ se-ries in medium and low temperature（600~800 ℃） was proposed：the conductivity of grain and grain boundary could be im-proved through optimizing the doped composition,nano-crystallization and electrolyte materials with novel structures could be prepared by different preparation methods and parameters.
Tianquan Liang , Yan Guo , Xiyong Chen , Feng Zhan , Xiuhai Zhang , Jianmin Zeng . Research progress of conductivity of nano ScSZ-based electrolyte at medium and low temperature[J]. Inorganic Chemicals Industry, 2021 , 53(6) : 87 -94 . DOI: 10.19964/j.issn.1006-4990.2020-0369
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