The crystal structure of a solid electrolyte, beta-A12O3, was investigated by XRD analysis and demonstrated by Diamond software. Its chemical formula was verified by the Ag ion molten salt exchange method and X-ray fl...The crystal structure of a solid electrolyte, beta-A12O3, was investigated by XRD analysis and demonstrated by Diamond software. Its chemical formula was verified by the Ag ion molten salt exchange method and X-ray fluorescence analysis （XRF）. The chemical formula of β- A12O3 is Na2O·8.52A12O3, and its crystal is of hexagonal, space group P63/mmc, with a = 5.5941 A and c = 22.5300 A. The chemical formula of β-Al20 is Na2O·6.03A12O3, and its crystal is of trigonal, space group R3m, with a = 5.6017 A and c = 33.6219 A. The maximum span in the sodion migration of β-phase （2.4283 A） is only about a third of that for the β-phase （6.9037 A）, so the β-phase has higher ionic conductivity than the r-phase.展开更多
基金supported by NSFC projects(21203095)China Postdoctoral Science Foundation Projects(2012M511261)Jiangsu Colleges and Universities Advantage Discipline Construction projects
文摘The crystal structure of a solid electrolyte, beta-A12O3, was investigated by XRD analysis and demonstrated by Diamond software. Its chemical formula was verified by the Ag ion molten salt exchange method and X-ray fluorescence analysis （XRF）. The chemical formula of β- A12O3 is Na2O·8.52A12O3, and its crystal is of hexagonal, space group P63/mmc, with a = 5.5941 A and c = 22.5300 A. The chemical formula of β-Al20 is Na2O·6.03A12O3, and its crystal is of trigonal, space group R3m, with a = 5.6017 A and c = 33.6219 A. The maximum span in the sodion migration of β-phase （2.4283 A） is only about a third of that for the β-phase （6.9037 A）, so the β-phase has higher ionic conductivity than the r-phase.
