Novel Amorphous MoS2/MoO3/Nitrogen-Doped Carbon Composite with Excellent Electrochemical Performance for Lithium Ion Batteries and Sodium Ion Batteries

A novel amorphous MoS2/MoO3/nitrogen-doped carbon composite has been successfully synthesized for the first time. The synthesis strategy only involves a facile reaction that partially sulfurizes organic–inorganic hybrid material Mo3O10 (C2H10N2) (named as MoOx/ethylenediamine) nanowire precursors at low temperature (300 °C). It is more interesting that such amorphous composites as lithium ion battery (LIB) and sodium ion battery (SIB) anode electrodes showed much better electrochemical properties than those of most previously reported molybdenum-based materials with crystal structure. For example, the amorphous composite electrode for LIBs can reach up to 1253.3 mA h g–1 at a current density of 100 mA g–1 after 50 cycles and still retain 887.5 mA h g–1 at 1000 mA g–1 after 350 cycles. Similarly, for SIBs, it also retains 538.7 mA h g–1 after 200 cycles at 300 mA g–1 and maintains 339.9 mA h g–1 at 1000 mA g–1 after 220 cycles, corresponding to a capacity retention of nearly 100%. In addition, the amorphou...