The relationship of structural and electrochemical properties of NASICON structure Li1.3Al0.3Ti1.7 [PO4]3 electrolytes by a sol-gel method
0
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
Lithium ion conducting NASICON-type electrolytes of general formula Li1.3Al0.3Ti1.7(PO4)3 (LATP) are fabricated by a citric acid-supported sol-gel process and analyzed for thermal stability, microstructure, crystalline phases. From these structural analyses, the relationship of microstructural changes and electrochemical properties is investigated. It is demonstrated that the sol-gel method enable to obtain pure LATP crystals at a lower temperature in a shorter synthesis time compared to conventional solid state reaction or glass-ceramics processes. The dense electrolyte pellets are prepared from the LATP nanopowders by sintering at 900 o C for 3 hours, and a room temperature conductivity of 7.8 × 10-5S/cm and activation energy of 38.2 KJ/mol was obtained.
Abstract
Lithium ion conducting NASICON-type electrolytes of general formula Li1.3Al0.3Ti1.7(PO4)3 (LATP) are fabricated by a citric acid-supported sol-gel process and analyzed for thermal stability, microstructure, crystalline phases. From these structural analyses, the relationship of microstructural changes and electrochemical properties is investigated. It is demonstrated that the sol-gel method enable to obtain pure LATP crystals at a lower temperature in a shorter synthesis time compared to conventional solid state reaction or glass-ceramics processes. The dense electrolyte pellets are prepared from the LATP nanopowders by sintering at 900 o C for 3 hours, and a room temperature conductivity of 7.8 × 10-5S/cm and activation energy of 38.2 KJ/mol was obtained.
참고문헌 (25)
- K.I. Cho, , J. Power Sources, 163(1), pp.223~228 (2006)
- M. Abdel-Baki, , J. Non-Cryst. Solids, 354(40-41), pp.4527~4533 (2008)
- B.K. Money, , Solid State Ionics, 179(27-32), pp.1273~1277 (2008)
- A. Hayashi, , J. Ceram. Soc. Jpn, 115(1338), pp.110~117 (2007)
- K. Minami, , Solid State Ionics, 178(11-12), pp.837~841 (2007)
- J.S. Thokchom, , J. Power Sources, 185(1), pp.480~485 (2008)
- J. Xie, , J. Power Sources, 189(1), pp.365~370 (2009)
- D. Ravaine, , J. Non-Cryst. Solids, 38-39(1), pp.353~358 (1980)
- P. Knauth, , Solid State Ionics, 180(14-16), pp.911~916 (2009)
- K. Takada, , Solid State Ionics, 158(3-4), pp.269~274 (2003)
- M. Murayama, , J. Solid State Chem, 168(1), pp.140~148 (2002)
- O. Bohnke, , Solid State Ionics, 91(1-2), pp.21~31 (1996)
- H. Aono, , J. Electrochem. Soc, 140(7), pp.1827~1833 (1993)
- G. Adachi, , Adv. Mater, 8(2), pp.127~135 (1996)
- J. Fu, , Solid State Ionics, 96(3-4), pp.195~200 (1997)
- T. Zhang, , J. Electrochem. Soc, 155(12), pp.A965~A969 (2008)
- S. Hasegawa, , J. Power Sources, 189(1), pp.371~377 (2009)
- M. Armand, , Nature, 451, pp.652~657 (2008)
- J.S. Thokchom, , Solid State Ionics, 177(7-8), pp.727~732 (2006)
- C.M. Chang, , J. Am. Ceram. Soc, 88(7), pp.1803~1807 (2005)
- X. Xu, , Solid State Ionics, 177(26-32), pp.2611~2615 (2006)
- K. Ado, , Solid State Ionics, 53-56(2), pp.723~727 (1992)
- Y. Kobayashi, , J. Power Sources, 81-82, pp.853~858 (1999)
- M. Cretin, , J. Euro. Ceram. Soc, 19(16), pp.2931~2940 (1999)
- Z. Wen, , J. Electroceram, 22(1-3), pp.342~345 (2009)