title: One-Step Synthesis of Titanium Oxyhydroxy-Fluoride Rods and Research on the Electrochemical Performance for Lithium-ion Batteries and Sodium-ion Batteries.
abstract: Titanium oxyhydroxy-fluoride, TiO0.9(OH)0.9F1.2 · 0.59H2O rods with a hexagonal tungsten bronze (HTB) structure, was synthesized via a facile one-step solvothermal method. The structure, morphology, and component of the products were characterized by X-ray powder diffraction (XRD), thermogravimetry (TG), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), inductively coupled plasma optical emission spectroscopy (ICP-OES), ion chromatograph, energy-dispersive X-ray (EDX) analyses, and so on. Different rod morphologies which ranged from nanoscale to submicron scale were simply obtained by adjusting reaction conditions. With one-dimension channels for Li/Na intercalation/de-intercalation, the electrochemical performance of titanium oxyhydroxy-fluoride for both lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) was also studied. Electrochemical tests revealed that, for LIBs, titanium oxyhydroxy-fluoride exhibited a stabilized reversible capacity of 200 mAh g(-1) at 25 mA g(-1) up to 120 cycles in the electrode potential range of 3.0-1.2 V and 140 mAh g(-1) at 250 mA g(-1) up to 500 cycles, especially; for SIBs, a high capacity of 100 mAh g(-1) was maintained at 25 mA g(-1) after 115 cycles in the potential range of 2.9-0.5 V.
authors.affiliation: Department of Chemistry and Hefei National Laboratory for Physical Science at Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China.
authors.forename: Biao
authors.initials: B
authors.lastname: Li
authors.affiliation: Department of Chemistry and Hefei National Laboratory for Physical Science at Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China.
authors.forename: Zhan
authors.initials: Z
authors.lastname: Gao
authors.affiliation: Department of Chemistry and Hefei National Laboratory for Physical Science at Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China.
authors.forename: Dake
authors.initials: D
authors.lastname: Wang
authors.affiliation: Department of Chemistry and Hefei National Laboratory for Physical Science at Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China.
authors.forename: Qiaoyan
authors.initials: Q
authors.lastname: Hao
authors.affiliation: Department of Chemistry and Hefei National Laboratory for Physical Science at Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Department of Chemistry and Hefei National Laboratory for Physical Science at Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China.
authors.forename: Yongkun
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Department of Chemistry and Hefei National Laboratory for Physical Science at Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China. kbtang@ustc.edu.cn.
authors.forename: Kaibin
authors.initials: K
authors.lastname: Tang
keywords: Hexagonal tungsten bronze; Lithium-ion batteries; Metal oxyhydroxy-fluoride; Sodium-ion batteries; Solvothermal method