Large-scale synthesis of single-crystal hexagonal tungsten trioxide nanowires and electrochemical lithium intercalation into the nanocrystals
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080 (China)
- Chemistry Department and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433 (China)
- College of Chemistry, Jilin University, Changchun 130023 (China)
Single-crystal nanowires of hexagonal tungsten trioxide in a large scale have been successfully prepared by a simple hydrothermal method without any templates and catalysts. Uniform h-WO{sub 3} nanowires with diameter of 25-50 nm and length of up to several micrometers are obtained. It is found that the morphology and crystal form of the final products are strongly dependent on the amount of the sulfate and pH value of the reaction system. The electrochemical performances of the as-prepared h-WO{sub 3} nanowires as anodic materials of Li-ion batteries have also been investigated. It deliveres a discharge capacity of 218 mAh g{sup -1} for the first cycle. In addition, the cycle ability of the nanocrystals is superior to that of bulk materials, which implies the morphology and particle size have the influence on the electrochemical performances. - Graphical abstract: The large-scale synthesis of single-crystal hexagonal tungsten oxides nanowires has been successfully realized by a simple hydrothermal method without any templates and catalysts. Uniform h-WO{sub 3} nanowires with diameters of 25-50 nm and length of up to several micrometers are obtained. The electrochemical performances of the nanowires as anode materials of Li-ion batteries have also been investigated. These 1D nanostructures exhibit better cycle ability than that of bulk materials, which indicates the morphology and particle size have the influences on the electrochemical performances.
- OSTI ID:
- 21015624
- Journal Information:
- Journal of Solid State Chemistry, Vol. 180, Issue 1; Other Information: DOI: 10.1016/j.jssc.2006.09.020; PII: S0022-4596(06)00532-9; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mesoporous MFe{sub 2}O{sub 4} (M = Mn, Co, and Ni) for anode materials of lithium-ion batteries: Synthesis and electrochemical properties
Structural Changes during the Conversion Reaction of Tungsten Oxide Electrodes with Tailored, Mesoscale Porosity