초록 |
The iron sulfide nanocomposites as anodes were prepared through microemulsion technique for the reverse micelle, calcination process for iron oxide under nitrogen, and subsequent solvothermal method for ion exchange deposition oxide into sulfide. To enhance the rate capability as well as the electrochemical stability, the iron sulfide nanocomposite were synthesized by wrapping the carbon like graphene onto the surface of iron precursor. The carbon-wrapped iron sulfide nanocomposites attribute to better electrochemical performance as follows: (i) by buffering the volume expansion during cycling, and (ii) nanoscaled metal particle offers high surface area, giving the intimate contact between electrolyte and electrodes. |