화학공학소재연구정보센터
Journal of Industrial and Engineering Chemistry, Vol.11, No.1, 170-173, January, 2005
Study of Ultrasonically Treated Tin Oxide Anodes in Li Ion Batteries
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Metal oxides such as SnO and SnO2 are attractive anode materials for Li-ion batteries because they have higher capacities and potentially better safety characteristics than do the carbon anodes used in commercial Li-ion batteries. However, a major problem with lithium alloys as anodes is the very large change in volume that occurs during charge and discharge, leading to stresses that cause the alloy to disintegrate and the anode to lose capacity upon cycling. To prevent this volume change in tin oxide anodes, the particle size was controlled by ultrasonic treatment. As a result, the ultrasonic-treated tin oxide anode underwent a lower volume change than did the non-treated tin oxide. The small volume change of the ultrasonically treated tin oxide is helpful for improving the morphology and it enhances the cycle life performance.