Preparation of β"-Alumina with η Type Nanometer Alumina Powder via Solid Phase Synthesis

Abstract:

Beta”-alumina is a fast ion conductor material,it was uesd to prepare a new electrolyte for a secondary energy sodium sulfur battery. nanoeta-alumina has the advantages of high activity and small size,which can reduce the synthesis temperature of beta”-alumina. Beta”-alumina is prepared with Sodium carbonate and eta-alumina amount of substance ratio of 1:5.5 via solid phase synthesis.This paper mainly investigate the temperature on the influence of the content of beta”-alumina and the samples’ crystal structure.The samples were characterized by XRD and SEM.The results show that the mixed powder react to form rhombohedral beta”-alumina at 1100°C;the highest content of beta”-alumina is 87.26% at 1200°C;the beta”-alumina decompose and part of beta”-alumina gradually transform into hexagonal beta-alumina at 1300°C;the content of beta”-alumina reduce and the grain grow at 1400°C; particle of the sample grow irregular and its crystal morphology is incomplete at 1500°C.

• Periodical: Solid State Phenomena (Volume 281)
• Pages: 84-89
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.281.84
• Online since: August 2018
• Authors: Chao Zhang, Ling Zhang*, Yan An Chang, Jin Han Liu
• Keywords: Nano-η-Alumina, Solid Phase Synthesis, β''-Alumina

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