Tin and tin-based intermetallics as new anode materials for lithium-ion cells
Tin and tin-based intermetallics as new anode materials for lithium-ion cells
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DOI：
10.1016/s0378-7753(00)00585-1
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发表时间：
2001-03
影响因子：
9.2
通讯作者：
M. Wachtler;J. Besenhard;M. Winter
中科院分区：
文献类型：
--
作者：
M. Wachtler;J. Besenhard;M. Winter
研究了 Sn/SnSb 复合电极在 1moll−1LiClO4/碳酸丙烯酯 (PC)、1moll−1LiPF6/碳酸乙烯酯 (EC)/碳酸二乙酯 (DEC) (1:1) 和反式十氢化萘饱和的 1moll−1LiClO4/PC (t-Dec) 中的恒电流循环行为。获得了 500 至 600mAhg−1 之间的容量（相对于活性材料的质量）。给出了不可逆容量的原因，并讨论了储锂金属和合金的成膜过程。观察到的含 EC 电解质的库仑效率略高于基于 PC 的电解质。另外，当 PC 电解质被 t-Dec（充当表面活性剂）饱和时，可以获得改进的效率和待机时间行为。
The galvanostatic cycling behaviour of Sn/SnSb composite electrodes has been studied in 1moll−1LiClO4/propylene carbonate (PC), 1moll−1LiPF6/ethylene carbonate (EC)/diethyl carbonate (DEC) (1:1), and 1moll−1LiClO4/PC saturated with trans-decalin (t-Dec). Capacities between 500 and 600mAhg−1(with respect to the mass of active material) were obtained. Reasons for the irreversible capacities are given and film formation on lithium storage metals and alloys is discussed. The observed coulombic efficiencies were slightly higher for the EC-containing electrolyte than for the PC-based one. Alternatively, improved efficiencies and stand-time behaviour were obtained when the PC electrolyte was saturated with t-Dec, which acts as a surfactant.