Lead-Based\nMetal–Organic Framework with Stable Lithium Anodic Performance

Abstract

A microporous Pb-based\nmetal–organic framework (MOF) [Pb­(4,4′-ocppy)₂]·7H₂O (Pb-MOF) has been constructed from 4-(4-carboxyphenyl)­pyridine <i>N</i>-oxide and Pb­(NO₃)₂. Structural analysis\nreveals that the Pb-MOF possesses three-dimensional framework with\na one-dimensional rhombic channel. When tested as a lithium-ion battery\nanode, a reversible lithium storage capacity of 489 mAh g^–1 was maintained after 500 cycles at 100 mA g^–1 as\nwell as excellent cycling stability. The superior electrochemical\nperformance may be derived from the sustenance of the Pb-MOF framework\nand compositional features of the organic moiety.