Lead-Based Metal–Organic Framework with Stable Lithium Anodic Performance

Abstract

A microporous Pb-based metal-organic framework (MOF) [Pb(4,4'-ocppy)₂]·7H₂O (Pb-MOF) has been constructed from 4-(4-carboxyphenyl)pyridine N-oxide and Pb(NO₃)₂. Structural analysis reveals that the Pb-MOF possesses three-dimensional framework with a one-dimensional rhombic channel. When tested as a lithium-ion battery anode, a reversible lithium storage capacity of 489 mAh g^-1 was maintained after 500 cycles at 100 mA g^-1 as well as excellent cycling stability. The superior electrochemical performance may be derived from the sustenance of the Pb-MOF framework and compositional features of the organic moiety.