Abstract
TiO2 is a promising and safe anode material for lithium ion batteries (LIBs). However, its practical application has been plagued by its poor rate capability and cycling properties. Herein, we successfully demonstrate a novel structured TiO2 anode with excellent rate capability and ultralong cycle life. The TiO2 material reported here shows a walnut-like porous core/shell structure with hybridized anatase/amorphous phases. The effective synergy of the unique walnut-like porous core/shell structure, the phase hybridization with nanoscale coherent heterointerfaces, and the presence of minor carbon species endows the TiO2 material with superior lithium storage properties in terms of high capacity (∼177 mA h g-1 at 1 C, 1 C = 170 mA g-1), good rate capability (62 mA h g-1 at 100 C), and excellent cycling stability (∼83 mA h g-1 was retained over 10 000 cycles at 10 C with a capacity decay of 0.002% per cycle).
Original language | English |
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Pages (from-to) | 10652-10663 |
Number of pages | 12 |
Journal | ACS Applied Materials & Interfaces |
Volume | 9 |
Issue number | 12 |
DOIs | |
Publication status | Published - 29 Mar 2017 |
Keywords
- amorphous
- anatase
- anode material
- electrochemical performance
- lithium ion battery
- porous core/shell structure
- TiO
- titanate
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Physical Chemistry and characterization(PC2)
Wouters, J. (Manager), Aprile, C. (Manager) & Fusaro, L. (Manager)
Technological Platform Physical Chemistry and characterizationFacility/equipment: Technological Platform
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Synthesis, Irradiation and Analysis of Materials (SIAM)
Louette, P. (Manager), Colaux, J. (Manager), Felten, A. (Manager), Tabarrant, T. (Operator), COME, F. (Operator) & Debarsy, P.-L. (Manager)
Technological Platform Synthesis, Irradiation and Analysis of MaterialsFacility/equipment: Technological Platform