Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1294263 | Journal of Power Sources | 2009 | 4 Pages |
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.