The growth and electrochemical properties of metal-oxide thin films: lithium intercalation
The growth and electrochemical properties of metal-oxide thin films: lithium intercalation
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金属氧化物薄膜的生长和电化学性能：锂嵌入
DOI：
10.1016/0169-4332(93)90680-a
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发表时间：
1993
影响因子：
6.7
通讯作者：
G. Nazri
中科院分区：
文献类型：
--
作者：
C. Julien;L. Elfarh;M. Balkanski;O. Hussain;G. Nazri
过渡金属氧化物如MoO 3和V6 O 13在室温下可进行可逆嵌锂，用作二次锂电池的阴极材料。这些化合物的薄膜已经通过采用闪蒸和热蒸发技术制备。系统地研究了薄膜的结构、光学和电学性质与生长条件的关系，并研究了100 μA·h容量的锂原电池的电化学性能。热力学数据表明，在中等温度下形成的薄膜制成的微电池表现出单调的放电电压，表明即使对于大的嵌入比，该材料仍保持在单相。Li的扩散系数随薄膜制备温度Ts的升高而增大，Ts = 250°C时，Li_xMoO_3和Li_xV_6 O_（13）的扩散系数分别为10 ~（-11）cm ~ 2s ~（-1）和10 ~（-9）cm ~ 2s ~（-1）。
Transition-metal oxides such as MoO3and V6O13can undergo reversible lithium intercalation at ambient temperature and are used as cathode materials for secondary lithium batteries. Thin films of these compounds have been prepared by employing flash and thermal evaporation techniques. The films are systematically characterized by studying structural, optical and electrical properties in relation with the growth conditions.Electrochemical properties of lithium galvanic thin film cells of 100 μA h capacity are investigated. Thermodynamic data show that microbatteries fabricated with films formed at moderate temperature exhibit a monotonous discharge voltage indicating that the material remains in the single phase even for large intercalation ratio. The lithium diffusivity increases with the temperatureTsof preparation of the film and reaches a value of 10-11cm2s-1in LixMoO3and 10-9cm2s-1in LixV6O13forTs= 250°C.