Covalently Tethered Polyoxometalate–Pyrene Hybrids for Noncovalent Sidewall Functionalization of Single‐Walled Carbon Nanotubes as High‐Performance Anode Material

Abstract

Abstract A covalently tethered polyoxometalate (POM)–pyrene hybrid (Py–SiW 11 ) is utilized for the noncovalent functionalization of single‐walled carbon nanotubes (SWNTs). The resulting SWNTs/Py–SiW 11 nanocomposite shows that both SiW 11 and pyrene moieties could interact with SWNTs without causing any chemical decomposition. When used as anode material in lithium‐ion batteries, the SWNTs/Py–SiW 11 nanocomposite exhibits higher discharge capacities, and better rate capacity and cycling stability than the individual components. When the current density is 0.5 mA cm −2 , the nanocomposite exhibits the initial discharge capacity of 1569.8 mAh g −1 , and a high discharge capacity of 580 mAh g −1 for up to 100 cycles.