Formation free energy of sodium stannate measured using beta-beta aEuro(3)-Al2O3 ceramic electrolyte
Wang, Zhi-Meng1; Xie, Hong-Wei1; Zhang, Yi2; Zhai, Yu-Chun1
2017-11-01
发表期刊RARE METALS
ISSN1001-0521
卷号36期号:11页码:905-911
摘要

beta-beta aEuro(3)-Al2O3 precursor powder was successfully prepared by a solid-phase sintering method with Li2CO3, Na2CO3 (as the sources of Li2O and Na2O, respectively) and alpha-Al2O3 powder as the raw materials. The precursor was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results indicate that the amount of Na2O in the raw materials has a great effect on the formation of beta aEuro(3)-Al2O3 in the beta-beta aEuro(3)-Al2O3 precursor. When Na2O content is 10 wt%, the content of beta aEuro(3)-Al2O3 phase reaches the maximum value of 86.24 wt% in the precursor. The beta-beta aEuro(3)-Al2O3 ceramic was prepared from beta-beta aEuro(3)-Al2O3 precursor powder by isostatic pressing and burying sintering process. The conductive property of the beta-beta aEuro(3)-Al2O3 ceramic was examined by electrochemical impedance spectroscopy (EIS) method, and the density was measured by the Archimedes method. The results reveal that when 10 wt% Na2O was added, the sample exhibits the best performance with the lowest resistivity of 4.51 Omega center dot cm and the highest density of 3.25 g center dot cm(-3). A solid electrolyte battery of Pt|SnO2, Na2SnO3|beta-beta aEuro(3)-Al2O3|NaCrO2, Cr2O3|Pt was assembled by the beta-beta aEuro(3)-Al2O3 electrolyte tube to measure the open potential of the resulting battery, and the formation free energy of sodium stannate was calculated. In the temperature range of 1273-773 K, the relationship between formation free energy of sodium stannate and temperature was generated as follows: .

关键词Beta-beta ''-al2o3 Electrolyte Electrochemistry Sodium Stannate Formation Free Energy Of Sodium Stannate
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1007/s12598-016-0717-4
收录类别SCI
语种英语
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
项目资助者National Natural Science Foundation of China(51234009)
WOS记录号WOS:000413105500009
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23272
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Northeastern Univ, Sch Met & Mat, Shenyang 110819, Liaoning, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
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Wang, Zhi-Meng,Xie, Hong-Wei,Zhang, Yi,et al. Formation free energy of sodium stannate measured using beta-beta aEuro(3)-Al2O3 ceramic electrolyte[J]. RARE METALS,2017,36(11):905-911.
APA Wang, Zhi-Meng,Xie, Hong-Wei,Zhang, Yi,&Zhai, Yu-Chun.(2017).Formation free energy of sodium stannate measured using beta-beta aEuro(3)-Al2O3 ceramic electrolyte.RARE METALS,36(11),905-911.
MLA Wang, Zhi-Meng,et al."Formation free energy of sodium stannate measured using beta-beta aEuro(3)-Al2O3 ceramic electrolyte".RARE METALS 36.11(2017):905-911.
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