Nanohybridization of Keggin polyoxometalate clusters and reduced graphene oxide for lithium-ion batteries

The nanocomposites of reduced graphene oxide (RGO) and polyoxometalates (POMs) have been considered to be effective to boost more Li + to participate in intercalation/deintercalation process of lithium-ion batteries (LIBs). In this paper, a nanocomposite (PMo 12 @RGO-AIL) with electrostatic interaction of RGO and Keggin-type [PMo 12 O 40 ] 3− has been fabricated and characterized by XRD, XPS, SEM, and TEM. To prepare PMo 12 @RGO-AIL, a strategy of covalent modification is developed between amino-based ionic liquid and RGO, helping to achieve the uniform dispersion of [PMo 12 O 40 ] 3− . When the PMo 12 @RGO-AIL was used as a cathode for LIBs, it could exhibit more excellent reversible capacity, cycle stability, and rate capability than those of samples without modifying by ionic liquids.