Graphite-like polyoxometalate-based metal–organic framework as an efficient anode for lithium ion batteries. Issue 8 (3rd February 2020)

• Record Type: Journal Article
• Authors: Yang, Xiya; Zhu, Peipei; Ma, Xiaoliang; Li, Wenjing; Tan, Zenglong; Sha, Jingquan
• Is Part Of: CrystEngComm. Volume 22:Issue 8(2020)
• Page Start: 1340
• Page End: 1345
• Publication Date: 2020-02-03
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c9ce01936g
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : A new porous POM supported graphite-like MOF (Cu-POM ) as a LIB anode material was designed and synthesized, and its lithium storage mechanism was explored using impedance spectra. Abstract : A new polyoxometalate (POM) pillared metal–organic framework (POMOF), [Cu24 (Trz)16 (H2 O)Cl4 (HPMo12 O40 )] (Cu-POM, Trz = 1, 2, 3-triazole), was synthesized and characterized. Crystal analysis reveals that the Keggin POMs are inserted into copper–triazole layers with a graphite-like structure generating a POM-supported porous three-dimensional framework. Owing to the combination of the multi-electron redox property of POM units and the open porous framework, Cu-POM can be utilized as an anode material for lithium ion batteries (LIBs), and exhibits a reversible capacity of 525 mA h g −1 at a current density of 100 mA g −1 after 100 cycles. Moreover, to illustrate lithium storage, the impedance spectra of compound Cu-POM during the first and 100th charge process have also been studied. The study of Cu-POM in this work might guide the development of POM-based electrode materials for LIBs.