CoO has been considered as a novel anode material for lithium storage due to its high theoretical capacity. Herein, mesoporous 3D CoO/nitrogen-doped graphene aerogel (CoO/NGA) is constructed by a facile solvothermal approach followed by subsequent annealing. The NGA is prepared by using dimethylmethanamide (DMF) as a reducing agent and nitrogen source. Ultrafine CoO nanocrystals are homogeneously distributed and tightly anchored on the 3D macroscopic NGA frameworks. The 3D NGA can not only effectively restrain the agglomeration of CoO nanocrystal but also accelerate ion and electron transport through 3D networks. Benefiting from the combine of the two characteristics, the unique CoO/NGA anode exhibits an outstanding cycling stability, showing a specific capacity of 896 mAh g⁻¹ at 200 mA g⁻¹ after 200 cycles.

由于CoO具有很高的理论容量，它已被认为是一种用于锂存储的新型阳极材料。在本文中，介孔的3D CoO /氮掺杂石墨烯气凝胶（CoO / NGA）是通过一种容易的溶剂热方法，随后进行退火而制成的。NGA是通过使用二甲基甲酰胺（DMF）作为还原剂和氮源制备的。超细CoO纳米晶体均匀分布并紧密锚固在3D宏观NGA框架上。3D NGA不仅可以有效地抑制CoO纳米晶体的团聚，还可以加速离子和电子通过3D网络的传输。从结合的两个特征中受益，独特的CoO / NGA阳极表现出优秀的循环稳定性，表现出的896毫安g的比容量^-1在200mA克^-1 200个周期后。