One-step Solvothermal Synthesis of Two-dimensional Ultrathin Na3[Ti2P2O10F] Nanosheets for Lithium/Sodium Storage

Abstract Na 3 [Ti 2 P 2 O 10 F], a novel oxyfluorinated titanium phosphate, is a promising anode material for lithium/sodium storage because of its open framework structure and marvelous two-dimensional (2D) tunnel. However, 2D nanostructured Na 3 [Ti 2 P 2 O 10 F] has been rarely prepared in view of the limitations of synthetic approaches. Here we report a one-step, low-cost solvothermal method for the synthesis of 2D ultrathin Na 3 [Ti 2 P 2 O 10 F] nanosheets with the thickness of 1 ∼ 2 nm. Benefiting from the desired crystal and structural characteristics, these as-prepared ultrathin 2D Na 3 [Ti 2 P 2 O 10 F] nanosheets exhibit good electrochemical performance for Li-ion and Na-ion batteries.