Molybdenum oxide (MoO₂) has been considered as a promising anode material in lithium-ion batteries with high theoretical capacity (838 mAh/g); regrettably, the drawback of rapid capacity decay seriously hinders its application. In this work, MoO₂ nanoparticles were in situ encapsulated inside the frameworks of porous carbon to construct MoO₂-carbon nanocomposites by a facile triconstituent co-assembly approach. The obtained MoO₂-carbon nanocomposites present stable structures and exhibit improved electrochemical performances of high reversible capacity (803 mAh/g at 0.1 A/g) and excellent cycling stability (572 mAh/g at 1 A/g after 400 cycles) as anode materials for lithium-ion batteries. These satisfactory results are mainly attributed to the synergy effects between the MoO₂ nanoparticles and carbon frameworks, specifically a better accommodation of volume change and a shorter pathway for ion transmission.

氧化钼（MoO ₂）被认为是锂离子电池中一种很有前景的负极材料，具有高理论容量（838 mAh/g）；遗憾的是，容量衰减快的缺点严重阻碍了其应用。在这项工作中，MoO ₂纳米颗粒被原位封装在多孔碳的框架内，通过简单的三组分共组装方法构建了MoO _{2 -}碳纳米复合材料。得到的MoO ₂-碳纳米复合材料具有稳定的结构，并表现出高可逆容量（0.1 A/g 时为 803 mAh/g）和优异的循环稳定性（400 次循环后 1 A/g 时为 572 mAh/g）作为锂负极材料的电化学性能-离子电池。这些令人满意的结果主要归因于 MoO ₂纳米粒子和碳骨架之间的协同效应，特别是更好地适应体积变化和更短的离子传输路径。