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Fabrication of redox-active polyoxometalate-based ionic crystals onto single-walled carbon nanotubes as high-performance anode materials for lithium-ion batteries

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Abstract

Polyoxometalate (POM)-based molecular cluster batteries have attracted wide interest due to their rich redox properties. To date, no studies on POM-based ionic crystals for LIBs have been reported, although the redox-active metals can be incorporated and finely tuned in the ionic crystals. Herein, a POM-based ionic crystal (denoted as Composite 1) was prepared for the first time by the complexation of the trinuclear acetate-bridged cobalt-containing macrocation ([Co3O(CH3CO2)6(C5H5N)3]+) with the anion [PMo12O40]3−. Further interaction of Composite 1 and single-walled carbon nanotubes (SWNTs) resulted in the formation of a novel Composite 1/SWNT nanocomposite through a facile one-pot strategy, in which the Composite 1 clusters were uniformly grown onto the surface of SWNTs. The as-prepared Composite 1/SWNT nanocomposite showed outstanding electrochemical performance as an anode material of LIBs by delivering a storage capacity of 1012 mA h g−1 at 100 mA g−1 for 100 cycles. The results may open a new pathway for exploring novel anode materials of LIBs.

Graphical abstract: Fabrication of redox-active polyoxometalate-based ionic crystals onto single-walled carbon nanotubes as high-performance anode materials for lithium-ion batteries

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Supplementary files

Article information


Submitted
16 Dec 2019
Accepted
31 Jan 2020
First published
04 Feb 2020

Inorg. Chem. Front., 2020, Advance Article
Article type
Research Article

Fabrication of redox-active polyoxometalate-based ionic crystals onto single-walled carbon nanotubes as high-performance anode materials for lithium-ion batteries

B. Iqbal, X. Jia, H. Hu, L. He, W. Chen and Y. Song, Inorg. Chem. Front., 2020, Advance Article , DOI: 10.1039/C9QI01636H

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