Electrochemical and structural investigations of the reaction of lithium with tin-based composite oxide glasses

被引:35
作者
Machill, S [1 ]
Shodai, T [1 ]
Sakurai, Y [1 ]
Yamaki, J [1 ]
机构
[1] NTT, Integrated Informat & Energy Syst Labs, Tokai, Ibaraki 31911, Japan
关键词
lithium battery; anode; amorphous tin composite oxides; X-ray diffraction; infrared spectroscopy;
D O I
10.1007/s100080050134
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Tin-based composite oxide materials have received considerable attention as potential anode materials for rechargeable lithium batteries. In this contribution we present the results of our investigations of the SnO-B(2)O(3)-P(2)O(5) system. We have investigated its electrochemical properties and especially its cycling performance. A focus of our interest was to explain the structural changes which occur during lithium cycling and their strong dependence on the preparation method. A part of the Sn-O component was converted into a very stable metallic phase. In addition, a decrease was observed in capacity owing to the formation of isolated and inactive tin grains. We also report on structural changes in the B(2)O(3)-P(2)O(5) matrix.
引用
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页码:97 / 103
页数:7
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