Preparation of Li Ion Conductive Ceramics via Liquid Process

Li1.5Al0.5Ti1.5 (PO4)3(LATP) has received much
attention as a solid electrolyte for lithium batteries. In this study, the
LATP solid electrolyte is prepared by the co-precipitation method
using Li3PO4 as a Li source. The LATP is successfully prepared and
the Li ion conductivities of bulk (inner crystal) and total (inner crystal
and grain boundary) are 1.1 × 10-3 and 1.1 × 10-4 S cm-1, respectively.
These values are comparable to the reported values, in which Li2C2O4
is used as the Li source. It is conclude that the LATP solid electrolyte
can be prepared by the co-precipitation method using Li3PO4 as the Li
source and this procedure has an advantage in mass production over
previous procedure using Li2C2O4 because Li3PO4 is lower price
reagent compared with Li2C2O4.

• M. Kotobuki
• M. Koishi

• Co-precipitation method
• lithium battery
• NASICON-type electrolyte
• solid electrolyte.

[1] J. M. Tarascon, and M. Armand, "Issues and challenges facing
rechargeable lithium batteries”, Nature vol. 414 pp.359-367, 2001.
[2] J. W. Fergus, "Ceramics and polymeric solid electrolytes for lithium-ion
batteries”, J. Power Sources vol. 195 pp.4554-4569, 2010.
[3] H. Aono, E. Sugimoto, and Y.Sadaoka, "Ionic conductivity and
sinterability of lithium titanium phosphate system”, Solid State Ionics, vol.
40/41, pp.38-42, 1990.
[4] H. Aono, E. Sugimoto, and Y. Sadaoka, "Ionic Conductivity of Solid
Electrolytes Based on Lithium Titanium Phosphate”, J. Electrochem. Soc.,
vol. 137 pp. 1023-1027, 1990.
[5] C. J. Leo, B. V. R. Chowdari, and C. V. R. Subba, "Lithium conducting
glass ceramic with Nasicon structure”, Mater. Res. Bull, vol. 37,
pp.1419-1430, 2002.
[6] J. Fu, "Superionic conductivity of glass-ceramics in the system
Li2O-Al2O3-TiO2-P2O5”, Solid State Ionics, vol. 96, pp.195-200, 1997.
[7] K. Hoshina, K. Yoshima ,M. Kotobuki, and K. Kanamura, "Fabrication of
LiNi0.5Mn1.5O4 thin film cathode by PVP sol–gel process and its
application of all-solid-state lithium ion batteries using
Li1 + xAlxTi2 − x(PO4)3 solid electrolyte”, Soli State Ionics, vol. 209/210, pp.
30-35, 2012.
[8] M. Kotobuki, Y. Isshiki, H. Munakata, and K. Kanamura, "All-solid-state
lithium battery with a three-dimensionally orderedLi1.5Al0.5Ti1.5(PO4)3
electrode”, ElectrochimicaActa, vo.55, pp. 6892-6896, 2010.
[9] J. S. Thokchom, and B. Kumar, "The effects of crystallization parameters
on the ionic conductivity of a lithium aluminum germanium phosphate
glass–ceramic”, J. Power Sources, vol. 195, pp. 2870-2876, 2010.
[10] J. K. Feng, L. Lu, and M. O. Kai, "Lithium storage capability of lithium
ion conductor Li1.5Al0.5Ge1.5(PO4)3”, J. Alloy. Compd., vol. 501, pp.
255-258, 2010.
[11] J. G. Li, T. Ikegami, J. H. Lee, and T. Mori, "Well-sinterable Y3Al5O12
Powder from Carbonate Precursor”, J. Mater. Res., vol. 15, pp.1514-1523,
2000.
[12] M. Kotobuki, and M. Koishi, "Preparation of Li1.5Al0.5Ti1.5(PO4)3 solid
electrolyte via a co-precipitation method”, Ionics, vol. 19, pp. 1945-1948,
2013.
[13] J. T. S. Irvine, D. C. Sinclair, and A. R. West, "Electroceramics:
characterization by impedance spectroscopy”, Advance Materials vol. 2,
pp.132-138, 1990.
[14] V. Thangadurai, and W. Weppner, "Investigations on electrical
conductivity and chemical compatibility between fast lithium ion
conducting garnet-like Li6BaLa2Ta2O12and lithium battery cathodes”, J.
Power Sources, Vol. 142, pp.-339-, 2005.
[15] J. Fu, "Fast Li+ ion conduction in Li2O-(Al2O3-Ga2O3)-TiO2-P2O5 glass
ceramics”, J. Materials Science vol. 33, pp.1549-, 1998.
[16] J. L. Naraez-Scmanate, and A. C. M. Rodrigues, "Microstructure and
ionic conductivity of Li1+xAlxTi2-x(PO4)3NASICON glass-ceramics”,Solid
State Ionics vol.181 pp.1197-, 2010.
[17] Y. Liang, S. Cheng, J. Zhao, C. Zhang, S. Sun, N. Zhou, Y. Qui, and X.
Zhang, "Heat treatment of electrospunPolyvinylidene fluoride fibrous
membrane separators for rechargeable lithium-ion batteries”, J. Power
Sources, vol. 240, pp. 204-211, 2013.
[18] M. Kotobuki, and M. Koishi, "Preparation of Li1.5Al0.5Ti1.5(PO4)3 solid
electrolyte via a sol-gel route using various Al sources”, Ceramics
International, vol. 29, pp. 4645-4649, 2013.