Synthesis and Characterization of Li1+2x+3yAlxScyZnyTi2-x-2ySixP3-xO12
来源期刊：JOURNAL OF RARE EARTHS2003年第4期
论文作者：王文继 许泽润 李荣华
Key words：inorganic chemistry; mineral fast ion conductor; kaolinite; Nasicon-like structure; rare earths;
Abstract: Rare earth mineral fast ion conductors of Li1+2x+3yAlxScyZnyTi2-x-2ySixP3-xO12 system based on LiTi2(PO4)3 were prepared by solid phase reaction at high temperature (1000～1300 ℃) for about 30 h using refined natural kaolinite and Sc2O3. The X-ray diffraction analysis shows that a Nasicon-like structure with R3c space group can be found in the composition range of x=0.1, 0.2, y≤0.2. The maximum lithium ion conductivity is 1.19×10-4 S*cm-1 for the composition with x=0.1, y=0.08 at room temperature, and its activation energy is 30.6 kJ*mol-1 in the temperature range of 150～300 ℃. The systems with these compositions have high conductivity of about 10-2 S*cm-1 at 300 ℃.
王文继1，许泽润1，李荣华1
(1.Department of Chemistry,Fuzhou University, Fuzhou 350002, China)
Abstract:Rare earth mineral fast ion conductors of Li1+2x+3yAlxScyZnyTi2-x-2ySixP3-xO12 system based on LiTi2(PO4)3 were prepared by solid phase reaction at high temperature (1000～1300 ℃) for about 30 h using refined natural kaolinite and Sc2O3. The X-ray diffraction analysis shows that a Nasicon-like structure with R3c space group can be found in the composition range of x=0.1, 0.2, y≤0.2. The maximum lithium ion conductivity is 1.19×10-4 S*cm-1 for the composition with x=0.1, y=0.08 at room temperature, and its activation energy is 30.6 kJ*mol-1 in the temperature range of 150～300 ℃. The systems with these compositions have high conductivity of about 10-2 S*cm-1 at 300 ℃.
Key words:inorganic chemistry; mineral fast ion conductor; kaolinite; Nasicon-like structure; rare earths;
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