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
  • [31] Effect of Precursors on the Preparation and Texture of Mesoporous γ-Al2O3 Powders
    L. V. Morozova
    T. V. Khamova
    I. G. Polyakova
    Inorganic Materials, 2020, 56 : 353 - 359
  • [32] Preparation of forming powders of high quality β"-Al2O3 ceramics
    Fan, ZZ
    Gu, ZH
    Chen, KG
    Xu, XH
    JOURNAL OF INORGANIC MATERIALS, 1999, 14 (01) : 36 - 42
  • [33] Facile route for preparation of highly crystalline γ-Al2O3 nanopowder
    Ghamsari, M. Sasani
    Mahzar, Z. Ashor Said
    Radiman, S.
    Hamid, A. M. Abdul
    Khalilabad, Sh Rahmani
    MATERIALS LETTERS, 2012, 72 : 32 - 35
  • [34] Effect of Precursors on the Preparation and Texture of Mesoporous γ-Al2O3 Powders
    Morozova, L. V.
    Khamova, T. V.
    Polyakova, I. G.
    INORGANIC MATERIALS, 2020, 56 (04) : 353 - 359
  • [35] Conductivity and NMR study of composite solid electrolytes CsNO2-A (A = SiO2, Al2O3, MgO)
    Mateyshina, Yulia
    Slobodyuk, Arseny
    Kavun, Valery
    Uvarov, Nikolai
    SOLID STATE IONICS, 2018, 324 : 196 - 201
  • [36] Atomistic study of vibrational properties of γ-Al2O3
    Claudia Loyola
    Eduardo Menéndez-Proupin
    Gonzalo Gutiérrez
    Journal of Materials Science, 2010, 45 : 5094 - 5100
  • [37] Properties of PVdF/HFP inorganic Al2O3 filler modified gel electrolytes
    Piotrowska, K.
    Zalewska, A.
    Syzdek, J.
    Niedzicki, L.
    Marcinek, M.
    RECHARGEABLE LITHIUM-ION BATTERIES, 2010, 25 (36): : 221 - 230
  • [38] Comparative Study of Ultrasound Stimulation and Conventional Heating Methods on the Preparation of Nanosized γ-Al2O3
    Majhi, Abhijit
    Pugazhenthi, G.
    Shukla, Anupam
    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2010, 49 (10) : 4710 - 4719
  • [39] Investigation on Al2O3 doped PVC-PBMA blend polymer electrolytes
    Arunkumar, R.
    Babu, Ravi Shanker
    Rani, M. Usha
    JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2017, 28 (04) : 3309 - 3316
  • [40] Preparation and conductivity of the composite polymer electrolytes based on poly [bis(methoxyethoxyethoxy)phosphazene], LiClO4 and α-Al2O3
    Chen-Yang, YW
    Chen, HC
    Lin, FJ
    Liao, CW
    Chen, TL
    SOLID STATE IONICS, 2003, 156 (03) : 383 - 392
12345