Metal-Organic Framework-derived synthesis of MoO2-Cu@NC nanocomposites for enhanced lithium storage properties

As advanced electrode materials for lithium ion batteries, the application of molybdenum dioxide (MoO2) is hampered by poor cycle stability and rate performance. In this work, a novel Mo/Cu metal organic framework (MOF) has been synthesized using nitrogen-rich folic acid (FA) as an organic ligand through liquid-phase method for the first time at room temperature. After a simple annealing treatment, MoO2-Cu@nitrogen-doped carbon (NC) nanomaterials derived from the Mo/Cu based MOF were obtained, which exhibit excellent performance as the anode material for lithium-ion batteries. The reversible discharge capacity of MoO2-Cu@NC nanocomposites exceeds 1000 mAh g(-1) at 100 mA which remains 846 mAh g(-1) after 100 cycles. Meanwhile, the obtained Mo02-Cu@NC nanocomposites also show good rate performance (580 mAh g(-1) at 1000 mA g(-1)).