A high-rate capability and energy density sodium ion full cell enabled by F-doped Na₂Ti₃O₇ hollow spheres

Abstract

Sodium-ion batteries (SIBs) have drawn remarkable attention due to their low cost and intrinsically inexhaustible sodium sources. In the past decades, it has aroused significant interest in building promising negative...

Doping Engineering in Electrode Material for Boosting the Performance of Sodium Ion Batteries

“…30 Among various anode materials of SIBs, the materials containing both cationic and anionic sites, slight substitution of anions with an appropriate anion is also an effective way to enhance the performance of the material. For example, the performance of the widely known NaTiO 2 anode of SIBs can be tuned by substituting O with other suitable anions such as F. 31 Similarly, doping in the anionic part of various alloys anode results in a significant boost of performance, e.g., doping of S 2− in anionic part of MoSe 2 results in an improvement in the electrical conductivity of material. 32 2.1.3.…”

TiO2-coated MoP/phosphorus doped carbon nanorods for ultralong-life sodium ion batteries with high capacity

“…5,6 Therefore, new anode materials with high rate capacity and stable cycling properties need to be explored to meet the energy efficiency, power density and cycle life requirements of sodium ion batteries. 7–9…”

“…5,6 Therefore, new anode materials with high rate capacity and stable cycling properties need to be explored to meet the energy efficiency, power density and cycle life requirements of sodium ion batteries. [7][8][9] MoP, with a nanorod structure, is a promising anode material. 10 However, it also encounters the challenge of volume changes that cannot be reversed during the reaction.…”

Anisotropic Amorphization and Phase Transition in Na2Ti3O7 Anode Caused by Electron Beam Irradiation

“…In past years, various efforts have been made to enhance the electrochemical performance of Na 2 Ti 3 O 7 , including element doping, [8][9][10] coating, [11,12] and nanostructure engineering, [13,14] and these approaches have shown promising results. On the other hand, studies on the structure stability of Na 2 Ti 3 O 7 have revealed that the degradation of Na 2 Ti 3 O 7 can be alleviated by mixing with Na 2 Ti 6 O 13 , while the spontaneous partial phase transition from Na 2 Ti 3 O 7 to Na 2 Ti 6 O 13 can be triggered by the Schottky pairs of Na and O vacancies suggested by the density functional theory (DFT) calculations.…”