Preparation of Na-β″-Al2O3 Solid Electrolyte by a Vapor Phase Process

被引：0
|
作者：
Zhang C. [1 ]
Zhang L. [1 ]
Zheng P. [1 ]
Li F. [1 ]
Zhang H. [1 ]
机构：
[1] School of High Temperature Materials and Magnesium Resource Engineering, University of Science and Technology Liaoning, Anshan, 114051, Liaoning
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2019年 / 47卷 / 09期
关键词：
Electrical conductivity; Nano-eta-alumina; Sodium-beta″-alumina; Vapor phase reaction;
D O I：
10.14062/j.issn.0454-5648.2019.09.15
中图分类号：
学科分类号：
摘要：
Na-β″-Al2O3 was prepared with η-Al2O3nanopowder by a vapor phase process using Na2CO3, Li2CO3 and MgO as additives. The results show that η-Al2O3 nanopowder has a high activity, and the relative density of the sample sintered at 1400 ℃ by hot-pressed sintering is 99.2%. The spinel phase formed by MgO doping in the sintering process of alumina can accelerate the process of vapor phase process. An appropriate amount of MgO addition can increase the content of β″-Al2O3, reduce the grain boundary resistance of the sample and improve the ionic conductivity of the electrolyte. The excessive MgO doping results in the decrease of sample density, thus increasing the grain boundary resistance and decreasing the ionic conductivity. The ionic conductivity of the electrolyte material reaches 0.164s•cm-1 at 300℃ when the amount of MgO addition is 1.0%. © 2019, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
引用
收藏
页码：1293 / 1300
页数：7
相关论文
共 14 条
  • [1] Mercadelli E., Arico A.S., Gondolini A., Et al., Influence of powders thermal activation process on the production of planar β-alumina ceramic membranes, J AlloysCompd, 696, pp. 1080-1089, (2017)
  • [2] Lu X.C., Xia G.G., Lemmon J.P., Et al., Advanced materials for sodium-β-alumina batteries: Status, challenges and perspectives, J Power Sources, 195, 9, pp. 2431-2442, (2010)
  • [3] Wei X.L., Xia Y., Liu X.M., Et al., Preparation of sodium beta″-alumina electrolyte thin film by electrophoretic deposition using Taguchi experimental design approach, ElectrochimActa, 136, pp. 250-256, (2014)
  • [4] Hu Y.Y., Wen Z.Y., Wu X.W., Et al., Low-cost shape-control synthesis of porous carbon film on β″-alumina ceramics for Na-based battery application, J Powder Sources, 219, pp. 1-8, (2012)
  • [5] Kim I., Park J.Y., Kim C.H., Et al., A room temperature Na/S battery using a β″ alumina solid electrolyte separator, tetraethylene glycol dimethyl ether electrolyte, and a S/C composite cathode, J PowderSources, 301, pp. 332-337, (2016)
  • [6] Chi C., Katsui H., Goto T., Effect of Li addition on the formation of Na-β/β″-alumina film by laser chemical vapor deposition, Ceram Inter, 43, 1, pp. 1278-1283, (2017)
  • [7] Chu C., Ji G., Xue J., Rare Met Mater Eng, 43, 10, pp. 2535-2540, (2014)
  • [8] Wang B., Cormack A.N., Molecular dynamics simulations of Mg-doped beta″-alumina with potential models fitted for accurate structural response to thermal vibrations, Solid State Ion, 263, pp. 9-14, (2014)
  • [9] Chen G.Y., Lu J.C., Zhou X.H., Et al., Solid-state synthesis of high performance Na-β″-Al<sub>2</sub>O<sub>3</sub> solid electrolyte doped with MgO, Ceram Inter, 42, 14, pp. 16055-16062, (2016)
  • [10] Ghadbeigi L., Szendrei A., Moreno P., Et al., Synthesis of iron-doped Na-β″-alumina + yttria-stabilized zirconia composite electrolytes by a vapor phase process, Solid State Ion, 290, pp. 77-82, (2016)
12