Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA.
Inorg Chem. 2010 Mar 15;49(6):2822-6. doi: 10.1021/ic902222g.
MLi(2)Ti(6)O(14) (M = Sr, Ba, 2Na) titanates have been investigated as lithium insertion materials for lithium-ion batteries. A comparative study has been undertaken based on the structure, morphology, and electrochemical properties of the titanate materials, which were prepared by sol-gel synthesis. Their lithium insertion behavior was analyzed by crystallographic considerations. While Na(2)Li(2)Ti(6)O(14) can reversibly host two Li(+) ions, SrLi(2)Ti(6)O(14) and BaLi(2)Ti(6)O(14) can reversibly insert almost four lithium ions per unit formula. Among the three materials, SrLi(2)Ti(6)O(14) showed superior capacity and rate capability. It was concluded that this class of materials could be of practical use in high-power lithium batteries for transportation applications.
MLi(2)Ti(6)O(14)（M = Sr，Ba，2Na）钛酸盐被研究作为锂离子电池的锂嵌入材料。基于钛酸盐材料的结构、形态和电化学性能进行了对比研究，这些材料是通过溶胶-凝胶合成制备的。通过晶体学考虑分析了它们的锂嵌入行为。虽然 Na(2)Li(2)Ti(6)O(14)可以可逆地容纳两个 Li(+)离子，但 SrLi(2)Ti(6)O(14)和 BaLi(2)Ti(6)O(14)可以可逆地每个单位配方插入几乎四个锂离子。在这三种材料中，SrLi(2)Ti(6)O(14)表现出优异的容量和倍率性能。结论是，这类材料在用于交通运输的高功率锂离子电池中可能具有实际用途。
