Phase separation of the electron–ion conducting layer on the surface of a TiP2O7 anode material for aqueous lithium rechargeable batteries

Abstract

A phase separated carbon and Fe_0.5Ti₂(PO₄)₃ bi-layer was fabricated on the surface of TiP₂O₇ particles. As the carbon layer improves electronic conductivity, and the Fe_0.5Ti₂(PO₄)₃ layer favors the transference of lithium ions, the capacity and rate performance of the TiP₂O₇ anode material for aqueous lithium rechargeable batteries are greatly enhanced.