3D Na3MnTi(PO4)3@C microspheres anchored on MWCNTs as advanced electrodes for sodium energy storage

Herein, we introduce an efficient strategy to fabricate 3D MWCNTs-enhanced Na3MnTi(PO4)3@C (abbreviated as 3D-NMTP@C/MWCNTs) microsphere via the simple spray-drying process followed by the solid-state annealing way. In these microspheres, the Na3MnTi(PO4)3@C (abbreviated as NMTP@C) nanoparticles are anchored on 3D MWCNTs, constructing a conductive transport pathway for electron and Na+. As a result, the resulted 3D-NMTP@C/MWCNTs electrode possesses superior battery properties for sodium energy storage. It displays a high capacity of 163.7 mAh g−1 at 0.1C. Furthermore, it exhibits a reversible capacity of 100.3 mAh g−1 over 400 cycles at 10C. These results suggest that the as-synthesized 3D-NMTP@C/MWCNTs microspheres can be employed as advanced electrodes in high-property sodium energy storage.