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Issue 28, 2015
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Morphology-engineered and TiO2 (B)-introduced anatase TiO2 as an advanced anode material for lithium-ion batteries

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Abstract

Low capacity and poor rate capability are the critical disadvantages for the practical application of anatase TiO2 anode materials for lithium-ion batteries. In this work, we present an effective and facile strategy for improving the electrochemical performance of anatase TiO2 anode materials for lithium-ion batteries. In our strategy, besides designing a unique nanostructure, the introduction of a second phase, TiO2 (B), is also involved. As a result, the electrochemical properties of the as-prepared TiO2 (TiO2-400) with a hierarchical structure of micro/nanoparticles constructed by ultrafine nanowires with 3–8 nm width and several micrometers (μm) length, in terms of capacity, rate capability and cycling performance are significantly improved. A high reversible capacity of 207.1 mA h g−1 is obtained at 0.2 C after 150 cycles. Even after 1000 cycles, high reversible capacities of 186 and 155.4 mA h g−1 are delivered at 1 C and 10 C, respectively. Moreover, reversible capacities of 142.1 and 140 mA h g−1 can be obtained even at 20C and 25 C, respectively. It is suggested that this excellent electrochemical performance may make TiO2-400 a promising anode material for advanced lithium-ion batteries with high power density and ultra-long life.

Graphical abstract: Morphology-engineered and TiO2 (B)-introduced anatase TiO2 as an advanced anode material for lithium-ion batteries

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Article information


Submitted
17 May 2015
Accepted
06 Jun 2015
First published
08 Jun 2015

J. Mater. Chem. A, 2015,3, 14721-14730
Article type
Paper

Morphology-engineered and TiO2 (B)-introduced anatase TiO2 as an advanced anode material for lithium-ion batteries

Q. Tian, Z. Zhang, L. Yang and S. Hirano, J. Mater. Chem. A, 2015, 3, 14721
DOI: 10.1039/C5TA03598H

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