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• W4377011078 abstract "Abstract Titanium dioxide (TiO 2 ) is a promising anode material for sodium–ion batteries (SIBs), which suffer from the intrinsic sluggish ion transferability and poor conductivity. To overcome these drawbacks, a facile strategy is developed to synergistically engineer the lattice defects (i.e., heteroatom doping and oxygen vacancy generation) and the fine microstructure (i.e., carbon hybridization and porous structure) of TiO 2 ‐based anode, which efficiently enhances the sodium storage performance. Herein, it is successfully realized that the Si‐doping into the MIL‐125 metal‐organic framework structure, which can be easily converted to SiO 2 /TiO 2–x @C nanotablets by annealing under inert atmosphere. After NaOH etching SiO 2 /TiO 2–x @C which contains unbonded SiO 2 and chemically bonded SiOTi, thus the lattice Si‐doped TiO 2–x @C (Si‐TiO 2–x @C) nanotablets with rich Ti 3+ /oxygen vacancies and abundant inner pores are developed. When examined as an anode for SIB, the Si‐TiO 2–x @C exhibits a high sodium storage capacity (285 mAh g −1 at 0.2 A g −1 ), excellent long‐term cycling, and high‐rate performances (190 mAh g −1 at 2 A g −1 after 2500 cycles with 95.1% capacity retention). Theoretical calculations indicate that the rich Ti 3+ /oxygen vacancies and Si‐doping synergistically contribute to a narrowed bandgap and lower sodiation barrier, which thus lead to fast electron/ion transfer coefficients and the predominant pseudocapacitive sodium storage behavior." @default.
• W4377011078 created "2023-05-19" @default.
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• W4377011078 date "2023-05-18" @default.
• W4377011078 modified "2023-10-14" @default.
• W4377011078 title "Introducing Hybrid Defects of Silicon Doping and Oxygen Vacancies into MOF‐Derived TiO_2–X@Carbon Nanotablets Toward High‐Performance Sodium‐Ion Storage" @default.
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• W4377011078 doi "https://doi.org/10.1002/smll.202302831" @default.
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• W4377011078 hasPublicationYear "2023" @default.
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