SnO2 NANOCRYSTALLITE: NOVEL SYNTHETIC ROUTE FROM DEEP EUTECTIC SOLVENT AND LITHIUM STORAGE PERFORMANCE

A new synthetic route to similar to 4 nm grain-sized SnO2 was proposed which involved a homogeneous precipitation in a deep eutectic solvent (DES) at room temperature. The white SnO2 precipitate was obtained from SnCl2 center dot 2H(2)O dissolved DES by injecting slow drop-wise H4N2 center dot H2O under stirring. The as-prepared nanocrystalline SnO2 has a Brunauer-Emmett-Teller surface area of 65: 12 m(2)/g with an average Barretl-Joyner-Halenda pore diameter of 3.5 nm. As anode for lithium ion batteries, the nanocrystalline SnO2 electrode delivered an initial charge capacity as high as 1045 mAh/g and its capacity retention is 58% after 30 cycles.