Preparation of Oriented Beta"-Al2O3 Electrolytes by Freeze-Drying and Study of their Morphology Dependence

被引：1
|
作者：
Ma, Mingyuan [1 ]
Li, Kaiyun [1 ]
Yang, Yang [1 ]
Zhang, Xiao [2 ]
Liang, Sen [1 ]
机构：
[1] Ningxia Univ, Key Lab Ningxia Photovolta Mat, Yinchuan 750021, Ningxia, Peoples R China
[2] North Minzu Univ, Sch Mat Sci & Engn, Yinchuan 750021, Ningxia, Peoples R China
来源：
JOURNAL OF ELECTRONIC MATERIALS | 2022年 / 51卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Beta"-Al2O3; freeze-drying; Na+ conductivity; degree of orientation; BETA-ALUMINA CERAMICS; IONIC-CONDUCTIVITY; SOLID-ELECTROLYTE; SODIUM BETA''; PRECURSORS; BATTERIES; BOEHMITE;
D O I：
10.1007/s11664-022-09614-7
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Beta''-Al2O3 powder was prepared through freeze-drying with liquid nitrogen, then pressed into bulk samples and sintered at 1570 degrees C. The effects of Al2O3 morphology (rod shaped or flake shaped) on the properties of sintered samples were well discussed. The rod-shaped Al2O3 sample shows a Lotgering factor (LF) of 0.38, an ionic conductivity of 1.852 x 10(-1) S cm(-1) for the direction parallel to the pressure at 350 degrees C and a bending strength of 192 MPa, all of which are much higher than those of the flake shaped sample (0.08, 178 MPa, and 3.08 x 10(-3) S cm(-1), respectively). For the rod-shaped sample, the freeze-drying process has evidently increased the degree of crystal orientation and therefore shortened the ion migration path, thereby enhancing its ionic conductivity.
引用
收藏
页码：3727 / 3735
页数：9
相关论文
共 50 条
  • [1] Preparation of Oriented Beta"-Al2O3 Electrolytes by Freeze-Drying and Study of their Morphology Dependence
    Mingyuan Ma
    Kaiyun Li
    Yang Yang
    Xiao Zhang
    Sen Liang
    Journal of Electronic Materials, 2022, 51 : 3727 - 3735
  • [2] Preparation of ?"-Al2O3 electrolytes by freeze-drying and SPS
    Li, Kaiyun
    Ma, Mingyuan
    Yang, Yang
    Liang, Sen
    Zhang, Xiao
    CERAMICS INTERNATIONAL, 2021, 47 (11) : 15017 - 15022
  • [3] Single step coating of Al2O3 nanofilms on W nanoparticles by a freeze-drying technique
    Xi, Xiaoli
    Xu, Xiangyang
    Nie, Zuoren
    Wang, Zhihong
    Zhu, JianJian
    Zhu, Xiaoguang
    Zuo, Tieyong
    INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2011, 29 (04) : 441 - 444
  • [4] Factors influencing the PVA polymer-assisted freeze-drying synthesis of Al2O3 nanofibers
    Yang, Huifang
    Sugita, Nobuho
    Nakane, Koji
    CERAMICS INTERNATIONAL, 2019, 45 (14) : 16731 - 16739
  • [5] PREPARATION AND CHARACTERIZATION OF BETA''-AL2O3 BY DRY-MIXING PROCESS
    KOHNO, K
    KOIKE, S
    NAKAZAWA, T
    KAMO, T
    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 1995, 103 (08) : 862 - 866
  • [6] Synthesis and application study of α-Al 2 O 3 with large specific surface area at high-temperature by hydrothermal-assisted freeze-drying
    Li, Siyi
    Wang, Pinyi
    Hu, Jianyun
    Yang, Guangcan
    Lu, Youjun
    Yuan, Zhenxia
    Zhang, Xiao
    Liang, Sen
    CERAMICS INTERNATIONAL, 2025, 51 (02) : 2163 - 2172
  • [7] MgO or Al2O3 crucible: Which is better for the preparation of LLZ-based solid electrolytes?
    Jiang, Yue
    Zhou, Yuxi
    Hu, Zhiwei
    Huang, Yi
    Zhu, Xiaohong
    CERAMICS INTERNATIONAL, 2020, 46 (03) : 3367 - 3373
  • [8] PREPARATION OF MGAL2O4 SPINEL POWDERS VIA FREEZE-DRYING OF ALKOXIDE PRECURSORS
    WANG, CT
    LIN, LS
    YANG, SJ
    JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1992, 75 (08) : 2240 - 2243
  • [9] Preparation of LiNi0.5Co0.2Mn0.3O2 by freeze-drying method
    Li, Hao
    Dai, Yongqi
    Li, Xuetian
    Shao, Zhongcai
    COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2021, 629
  • [10] Freeze-drying optimized Ce-P/γ-Al2O3 coating on ceramic-supported Pd catalysts for CO2 methanation and CO oxidation
    Wei, Yulin
    Ji, Jun
    Liang, Fuxin
    Ma, Deli
    Zhang, Zhenyu
    Du, Yuhang
    Pang, Zhe
    Wang, Honglei
    Li, Qinggang
    Shi, Guopu
    Wang, Zhi
    CERAMICS INTERNATIONAL, 2023, 49 (16) : 26910 - 26919
12345