کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1659714 | 1008387 | 2010 | 8 صفحه PDF | دانلود رایگان |

Si and Si-based composite electrodes have been widely proposed as negative electrode materials in lithium ion batteries because Si has a large specific capacity of up to ten times that of graphite. A series of studies have been performed to investigate the reaction of Li with Si and SixM1 − x films, where M (M = Mo, Ti, or V) is a transition metal element which does not alloy with Li. The electrodes are deposited by an RF/DC magnetron co-sputtering system and are investigated by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The surface morphologies of the electrodes are observed using a field emission scanning electron microscopy (FESEM). The electrochemical properties of the electrodes were studied using cycling testing. Compared to Si electrodes, Si-based composite electrodes with different anode compositions have shown a great advantage in reversible reactions with Li. This composite system consequently improved the cycle life and coulombic efficiency of silicon-based anodes.
Journal: Surface and Coatings Technology - Volume 205, Supplement 1, 25 December 2010, Pages S439–S446