Aqueous zinc batteries are one of the most competitive energy storage devices for future wearable electronics and large-scale energy storage because of their intrinsic safety and low cost. To obtain...

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It is of great significance for the sustainable development of society to search for novel coordination polymer-based electrode materials of lithium ion batteries. Herein, a two-dimensional coordination polymer, )-tetraone; DMF = dimethylformamide), was synthesized and first used as a cathode material of lithium ion batteries. The Cu-CP electrode displayed a better cycling stability and the specific capacity of 40.3 mA h g −1 at 50 mA g −1 after 50 cycles along with a Coulombic efficiency of 96.7%. The electrochemical study for the Cu-CP electrode reveals that both Cu(II) ions and 4-DTBPT ligands may be involved in the electrochemical reaction during charge and discharge. Our work demonstrates again that it is a feasible way to utilize the interaction of metal ions and organic ligands with redox activity for constructing coordination polymers acting as the cathode materials for lithium ion batteries.

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