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一维薄水铝石制备高Na-β″-Al2O3相相含量电解质材料
作者: 笑1  洋2 吴彦国2  森2 沈宏芳1 孙文周1 
单位:(1. 北方民族大学材料科学与工程学院 银川 750021 2. 宁夏大学光伏材料重点实验室 银川 750021) 
关键词:一维薄水铝石 固体电解质 β"-氧化铝 
分类号:TM910
出版年,卷(期):页码:2019,47(6):0-0
DOI:
摘要:

 以水热合成的一维γ-AlOOH为原料,采用固相反应法制备了具有高Na-β"-Al2O3相相含量的电解质材料,研究了前驱体形貌及烧结制度对Na-β"-Al2O3材料的影响。结果表明:γ-AlOOH经预烧后的产物形貌为一维棒状形貌,良好的拓扑继承γ-AlOOH前驱体的一维形貌,经高温固相反应形成Na-β"-Al2O3相后无法进一步继承前驱体的一维结构,得到具有层片状结构的Na-β"-Al2O3材料。预烧可以提高β"-Al2O3相含量,当预烧温度为1 100 ℃时,β"-Al2O3相含量达95.7 %,300 ℃时的电导率为0.017 S?cm–1。

 The solid electrolyte material with a high Na-β"-Al2O3 phase content was prepared by a solid-state reaction method with one-dimensional γ-AlOOH as a raw material. The effects of precursor morphology and sintering regime on the Na-β"-Al2O3 materials were investigated. The results show that γ-AlOOH pre-sintered at different temperatures can topologically inherit the one-dimensional rod morphology of the precursor. Na-β"-Al2O3 powder synthesized by solid-state reaction cannot further inherit the one-dimensional morphology of the precursor. It is found that plate-like structures are obtained in all the Na-β"-Al2O3 materials. The calcination of γ-AlOOH can increase the content of β"-Al2O3 phase. The content of β"-Al2O3 phase is 95.7 %, and the conductivity at 300 ℃ is 0.017 S•cm–1 when the calcination temperature is 1 100 ℃.

基金项目:
国家自然科学基金(21663001;51762002)和宁夏自然科学基金(2018AAC03117)。
作者简介:
参考文献:

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