Effects of oxygen vacancy concentration and sintering temperature on rechargeable Li-ion storage performance of titanium niobate anode materials

Article Chemistry, Physical

Doping with W6+ ions enhances the performance of TiNb2O7 as an anode material for lithium-ion batteries

Yu-Sheng Hsiao et al.

Summary: By selectively doping W6+ ions into TiNb2O7 lattice, the electronic and ionic conductivity of the material was improved, leading to enhanced energy storage performance.

APPLIED SURFACE SCIENCE (2022)

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Article Electrochemistry

Defect engineering of TiNb2O7 compound for enhanced Li-ion battery anode performances

Heechae Choi et al.

Summary: By manipulating point/line defects, the crystal structure of TiNb2O7 can be altered to improve its lithium storage properties. This study found that by controlling oxygen vacancies through different calcination temperatures and vacuum conditions, the lattice constants and cell volume of TiNb2O7-x can be increased, leading to enhanced charge/discharge capacity and cycling stability.

ELECTROCHIMICA ACTA (2022)

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Article Engineering, Chemical

Highly effective Al-doped titanium niobate porous anode material for rechargeable high-rate Li-ion storage performance

Rasu Muruganantham et al.

Summary: This study synthesized aluminum-doped titanium niobate mesoporous materials via a solvothermal method and investigated the effects of Al doping on their physicochemical properties and electrochemical performance. The results showed that aluminum doping improved the conductivity and lithium-ion kinetics behavior of the materials, leading to higher storage performance.

JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS (2022)

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Article Chemistry, Physical

Conductivity optimization via intertwined CNTs between TiNb2O7@C microspheres for a superior performance Li-ion battery anode

Guozhen Zhu et al.

Summary: A hierarchical conductive optimization strategy was proposed to improve the rate capability of traditional TNO electrodes by fabricating highly conductive porous TNO@C/CNTs microsphere. The attached carbon materials on the TNO-based electrode significantly enhanced the conductivity and cyclic durability, leading to improved performances of LIBs.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

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Article Chemistry, Multidisciplinary

Reducing Crystallinity of Micrometer-Sized Titanium-Niobium Oxide through Cation Substitution for High-Rate Lithium Storage

Zichen Wu et al.

Summary: This study improved the ion transport kinetics of titanium-niobium oxides by controlling crystallinity, resulting in the formation of Ti2.5Nb9W0.5O29. The newly developed material exhibited superior kinetics and remarkable rate performance in lithium-ion batteries, showing great potential for practical applications.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2021)

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Article Materials Science, Multidisciplinary

Synthesis and Electrochemical Properties of TiNb2O7 and Ti2Nb10O29 Anodes under Various Annealing Atmospheres

Touraj Adhami et al.

Summary: In this study, TiNb2O7 and Ti2Nb10O29 compounds were successfully synthesized as an anode material for lithium-ion batteries using mechanochemical method and post-annealing. The influence of annealing atmosphere on morphology, particle size, and electrochemical characteristics was investigated. Annealing in different atmospheres resulted in variable discharge capacities, with higher capacity observed for samples annealed in oxygen atmosphere compared to argon atmosphere.

METALS (2021)

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Article Electrochemistry