Coordination polymers (CPs) have shown promising potential as electrode materials for lithium ion batteries (LIBs). However, their practical applications are plagued by poor cyclability and unsatisfactory rate performance. Herein, a composite, combining a novel Ce-Co bimetallic coordination polymer with cerium dioxide and graphene nanoplatelets (Ce-Co-CP/CeO₂/G), is synthesized and applied as anode materials for LIBs. It is found that the addition of graphene can significantly enhance the conductivity of electrode material. Furthermore, the graphene nanoplatelets can act as a template for the formation of a lamellar morphology of Ce-Co-CP/CeO₂/G, which is beneficial to shorten the pathway for Li⁺-ion migration and thus improves the electrochemical performance. Consequently, the charge capacity of the sample reaches 454.3 mAh/g after 100 cycles at a current of 100 mA/g. Even at a high current density of 1000 mA/g, it can still deliver a capacity of 196.2 mAh/g after 1000 cycles. This work shows a development potential of bimetallic CP materials as a candidate for electrode materials for the next-generation LIBs.

配位聚合物（CP）作为锂离子电池（LIB）的电极材料已显示出广阔的发展潜力。然而，它们的实际应用受到可循环性差和速率性能不令人满意的困扰。在此，合成了一种将新型Ce-Co双金属配位聚合物与二氧化铈和石墨烯纳米片（Ce-Co-CP / CeO ₂ / G）相结合的复合材料，并将其用作LIB的负极材料。发现添加石墨烯可以显着增强电极材料的电导率。此外，石墨烯纳米片可以充当Ce-Co-CP / CeO ₂ / G的层状形态形成的模板，这有利于缩短Li ⁺的途径离子迁移并因此改善电化学性能。因此，在100mA / g的电流下100次循环之后，样品的充电容量达到454.3mAh / g。即使在1000 mA / g的高电流密度下，它在1000次循环后仍可提供196.2 mAh / g的容量。这项工作显示了双金属CP材料作为下一代LIB电极材料的候选材料的发展潜力。