A lanthanide-based coordination polymer as lithium ion battery anode with high cyclic stability

摘要

A lanthanide-based coordination polymer Tb-2(H(2)dobdc)(3)(DMF)(4) (Tb-MOF), was prepared by the solvothermal reaction. Benefitting from the large amount and uniform distribution of oxygen atom, conjugated aromatic nucleus as active electrochemical reaction sites, Tb-MOF anode exhibits good specific capacity and excellent cycle performance. The initial discharge specific capacity reached 627.5 mAh g (1) and -87.4% capacity retention after 100 cycles at a current density of 100 mA g (1). At the same time, Tb-MOF electrode has an extremely high structural stability, and the capacity retention is maintained at 99.1% even if it is cycled 3000 times at a current density of 0.8 Ag (1). The research results show that this novel rare earth complex electrode has important research value and application potential compared with traditional anode materials. (C) 2018 Elsevier B.V. All rights reserved.