Metal-organic Framework of [Cu2(BIPA-TC)(DMA)2]n: A Promising Anode Material for Lithium-Ion Battery

摘要

A copper-based redox-active metal-organic framework (Cu-MOF) is solvothermally synthesized from Cu(NO3)2 with the ligand 5,5-(1,3,6,8-tetraoxobenzo[Imn][3,8]phenanthroline-2-7diyl)-bis-1,3-benzenedicarboxylic acid. The as-prepared Cu-MOF is characterized by X-ray diffraction, automatic sphere surface analyzer, field emission scanning electron microscopy, and X-ray photoelectron spectroscopy. The electrochemical properties of Cu-MOF as an anode are investigated for lithium-ion batteries. The Cu-MOF exhibits superior performance including high reversible capacity and excellent cyclic stability. The Cu-MOF shows high initial charge capacity of 753.7 mAhg~(-1), and still remains approximately 53% of its capacity after 500 cycles. In addition, it is revealed that the oxidation/reduction of copper ion in Cu-MOF occurred during charge and discharge process.