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The crystal structure of a solid electrolyte, beta-Al2O3, 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-Al2O3 is Na2O·8.52Al2O3, and its crystal is of hexagonal, space group P63/mmc, with a = 5.5941 and c = 22.5300 . The chemical formula of β'-Al2 O is Na2O·6.03Al2O3, and its crystal is of trigonal, space group R 3 m, with a = 5.6017 and c = 33.6219 . The maximum span in the sodion migration of β'-phase(2.4283 ) is only about a third of that for the β'-phase(6.9037 ), so the β'-phase has higher ionic conductivity than the β-phase. 相似文献
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