| Abstract Scope |
Bilayered (or δ-) vanadium oxide (BVO) emerged as an electrode material with high performance in energy storage devices. In this talk, two synthesis approaches based on sol-gel chemistry will be presented. In the first approach, α-V2O5 is used as a vanadium source; the second synthesis route utilizes 2D V2CTx MXene phase as a precursor. The striking difference in morphology of the BVO particles, 1D nanobelts in the first method and 2D nanoflakes in the second technique, will be highlighted. The ability of both synthesis approaches to allow compositional versatility will be demonstrated by presenting δ-MxV2O5·nH2O phases with M = Li, Na, K, Mg, Ca. The role of interlayer species in electrochemical energy storage will be discussed using Li-ion batteries as a model system. Ultimately, this presentation will highlight how the design of innovative synthesis approaches can enable chemical control of material structure, composition and morphology leading to enhanced properties. |