MOFs材料作为一类新型的锂离子电池电极材料而受到广泛关注和研究. 作者通过溶液扩散法将Co₃(HCOO)₆原位负载在 rGO（还原氧化石墨烯）上制备出Co₃(HCOO)₆@rGO复合材料. 将Co₃(HCOO)₆@rGO作为锂离子电池负极材料，以500 mA·g^-1的电流密度恒电流充放电循环 100 周后，仍然保持有 926 mAh·g^-1 的比容量，亦表现出很好的倍率性能. 循环伏安和X-射线光电子能谱测试表明，Co₃(HCOO)₆@rGO材料上的Co²⁺和甲酸根在充放电过程中均发生可逆的电化学反应. 对比同样采用溶液扩散法合成的 Co₃(HCOO)₆ 的测试结果发现，rGO起到活化甲酸根的电化学反应的作用，同时也改善了Co₃(HCOO)₆的倍率性能. 将MOFs材料与rGO复合为优化 MOFs 材料的电池性能提供了一个新思路.

Metal–organic framework(MOF) is a kind of novel electrode materials for lithium ion batteries. Here, a composite material Co₃(HCOO)₆@rGO was synthesized for the first time by in situ loading of Co₃(HCOO)₆ on rGO (reduced oxide graphene) through a solution chemistry method. As an anode material for lithium ion batteries, it exhibited an excellent cycle stability as well as a large reversible capacity of 926 mAh·g^-1 at a current density of 500 mA·g^-1 after 100 cycles within the voltage range of 0.02 ~ 3.0 V vs. Li/Li⁺ with a good rate capability. The results of cyclic voltammetry and XPS measurements revealed that both Co²⁺ and formate ions in Co₃(HCOO)₆@rGO uderwent reversible electrochemical reactions during the charge and discharge process. Compared with Co₃(HCOO)₆ synthesized through the same method, it was found that rGO could activate the electrochemical reaction of formate ion, which improved the Co₃(HCOO)₆ rate performance.A new route was demonstrated through this work to enhance the specific capacity and rate capability of MOFs by introducing rGO.