期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 156, 期 3, 页码 A187-A191出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.3056046
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The volume changes vs lithium content of nanostructured Sn(1-x-y)Co(x)C(y) thin films with different compositions have been measured using in situ atomic force microscopy (AFM) experiments. For the films studied, the Co content, x, varied 0.18 < x < 0.5 and the carbon content, y, varied 0 < y < 0.79. In all cases the volume varied linearly with lithium content, and the maximum volume expansion ranged from 142 to 204%, depending on the initial composition, for compositions with y < 0.5. The experimental values have been compared with theoretical estimates calculated based on 8.9 +/- 0.5% cm(3)/mol for the alloyed Li atoms as proposed by Obrovac [J. Electrochem. Soc., 154. A849 (2007)]. The agreeement is excellent except for the sample that has y = 0.79, or 79% carbon. (C) 2009 The Electrochemical Society.
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