کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1294263 | 973603 | 2009 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Improvement of cycle behaviour of SiO/C anode composite by thermochemically generated Li4SiO4 inert phase for lithium batteries Improvement of cycle behaviour of SiO/C anode composite by thermochemically generated Li4SiO4 inert phase for lithium batteries](/preview/png/1294263.png)
A new anode composite material is prepared by thermal treatment of a blend made of silicon monoxide (SiO) and lithium hydroxide (LiOH) at 550 °C followed by ball milling with graphite. X-ray diffraction pattern confirms the presence of Li4SiO4 in the thermally treated (SiO + LiOH) material. The electrode appears to be smooth and glassy as evident from observation with a scanning electron microscope (SEM), possibly due to the presence of nano-silicon and Li4SiO4 particles, and exhibits superior performance with a charge capacity of ∼333 mAh g−1 at the 100th cycle with a low-capacity fade on cycling. Cyclic voltammograms of the electrode predict high power capability. On the other hand, the electrode comprising of only SiO and C prepared through ball milling, devoid of Li4SiO4, shows hard crust particulates in the electrode exhibiting low charge–discharge capacities with cycling.
Journal: Journal of Power Sources - Volume 188, Issue 2, 15 March 2009, Pages 574–577