Academic Journal of Materials & Chemistry, 2023, 4(4); doi: 10.25236/AJMC.2023.040403.
School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, China
This study demonstrates the growth of Li-β-alumina films by laser chemical vapor deposition and investigates the effects of deposition temperature (Tdep), molar ratio of Li/Al (RLi/Al) and total pressure (Ptot) on the phase formation, microstructure, orientations and deposition rate (Rdep) of the film. Single-phase Li-β-alumina films were deposited at Tdep = 1100 K–1300 K, RLi/Al = 20–50 and Ptot = 600–1000 Pa. Li-β-alumina films with the hexagonally faceted platelet morphology (flake-like) were deposited at Ptot = 1000 Pa, whereas bulky grains were formed at Ptot=600 Pa. The maximum Rdep of Li-β-alumina films was 30 μm h−1 at Tdep=1225 K, RLi/Al=30 and Ptot=600 Pa. At room temperature the ionic conductivity of Li-β-alumina film prepared by laser CVD reached 2×10-4 S/cm, demonstrating superior performance and significant potential in lithium battery.
beta alumina; CVD; film; ionic conductivity; electrolyte
Chen Chi. Synthesis of beta alumina films using the process of chemical vapor deposition under lithium-rich atmosphere. Academic Journal of Materials & Chemistry (2023) Vol. 4, Issue 4: 14-20. https://doi.org/10.25236/AJMC.2023.040403.
 R.R. Ridgway, A.A. Klein, W.J. O'Leary. The Preparation and Properties of So-Called ''Beta Alumina''. Transactions of the Electrochemical Society, 1936, 70: 71-88.
 R.M. Dell, P.T. Moseley. Beta-alumina electrolyte for use in sodium/sulphur batteries Part 2: Manufacture and use. Journal of Power Sources, 1981, 7: 45-63.
 R.M. Dell, P.T. Moseley. Beta-alumina electrolyte for use in sodium/sulphur batteries: Part I: Fundamental properties. Journal of Power Sources, 1981, 6:143-160.
 X. Lu, G. Xia, J.P. Lemmon, Z. Yang. Advanced materials for sodium-beta alumina batteries: Status, challenges and perspectives. Journal of Power Sources, 2010, 195: 2431-2442.
 Sung-Tae Lee, Ki-Moon Lee, Dae-Han Lee, Jung-Rim Haw, S.-K. Lim. Analysis of the phase formation of Na-β/β"-aluminas using MgO and Li2O as phase stabilizers. Journal of Ceramic Processing Research, 2011, 12: 38-45.
 H. Mituo. Lattice constants of non-stoichiometric beta-alumina. Materials Research Bulletin, 1971, 6: 461-464.
 Yungfang Yu Yao, J.T. Kummer. Topotactical reactions with ferrimagnetic oxides having hexagonal crystal structures. J. Inorg. Nucl. Chem., 1967, 29: 2453-2475.
 J.T. Kummer. β-Alumina electrolytes. Progress in Solid State Chemistry, 1972, 7: 141-175.
 K. Tanaka. Concept design of solar thermal receiver using alkali metal thermal to electric converter (AMTEC). Current Applied Physics, 2010, 10: 254-256.
 J.A. Jeevarajan. Battery Safety. Safety Design for Space Systems, 2009, 11: 507-548.
 G. He, T. Goto, T. Narushima, Y. Iguchi. Electrical conductivity of alkaline-earth metal β-aluminas and their application to a CO2 gas sensor. Solid State Ionics, 1999, 121: 313-319.
 R. Holze. Secondary Batteries–High Temperature Systems | Sodium–Sulfur. Encyclopedia of Electrochemical Power Sources, 2009, 1: 302-311.
 M.M. Bućko, M. Cichocińska. Preparation of Ca-β"-Al2O3 from alumina gel. Journal of the European Ceramic Society, 1996, 16: 79-84.
 J.-H. Koh, N. Weber, A.V. Virkar. Synthesis of lithium-beta-alumina by various ion-exchange and conversion processes. Solid State Ionics, 2012, 220: 32-38.
 V. Jayaraman, G. Periaswami, T.R.N. Kutty. Preparation of lithium β-alumina by the ionexchange reaction. Mater. Res. Bull., 1998, 33: 1811-1820.
 A.Y. Zhang, T. Akashi, B.P. Zhang, T. Goto, T. Zhang. Electrical conductivity and ionic transport number of Sr β-alumina single crystals prepared by a floating zone method. Solid State Ionics, 2005, 176: 2319-2323.
 A.Y. Zhang, T. Akashi, T. Goto. Electrical conductivity of non-stoichiometric Sr β-alumina single crystals prepared by a floating zone method. Solid State Ionics, 2003, 156: 425-431.
 C. Kun Kuo, P.S. Nicholson. The growth of K-β-Al2O3 single-crystal films on single-crystalα-Al2O3 substrates. Solid State Ionics, 1994, 73: 297-301.
 S. Yamaguchi, K. Kimura, M. Tange, Y. Iguchi, A. Imai. Ionic conduction in Sr hexa-aluminate with β-alumina structure. Solid State Ionics, 1988, 26: 183-188.
 I. Atsuo, H. Mituo. Ionic Conduction of Impurity-Doped β-Alumina Ceramics. Japanese Journal of Applied Physics, 1972, 11: 180.