Synthesis of MnO@C core-shell nanoplates with controllable shell thickness and their electrochemical performance for lithium-ion batteries

MnO@C core-shell nanoplates with a size of similar to 150 nm have been prepared via thermal treatment deposition of acetylene with the precursor of Mn(OH)(2) nanoplates, which has been hydrothermally synthesized. The thickness of the carbon shells varied from similar to 3.1 to 13.7 nm by controlling the treatment temperature and reaction duration time. The electrochemical performance of the MnO@C nanoplates, which were synthesized at 550 degrees C for 10 h with a carbon shell thickness of similar to 8.1 nm, display a high reversible capacity of similar to 770 mA h g(-1) at a current density of 200 mA g(-1) and good cyclability after prolonged testing, which is higher than that of MnO@C nanoplates with a carbon shell thickness of similar to 3.1, 4.0, 4.2, 10.9 and 13.7 nm.