1. The preparation of H2Ti12O25 via multi-method and their rate performance in Lithium ions battery.
- Author
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Wang, Chun-Mei, Chen, Li, Su, Yin-Li, Yang, Gao-Li, and Zhang, Wen-Long
- Subjects
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LITHIUM-ion batteries , *NANORODS , *HEAT treatment of metals , *ELECTROCHEMISTRY , *TITANIUM compounds - Abstract
H 2 Ti 12 O 25 nanorods are successfully prepared via hydrothermal reaction following heat treatment at 260 °C. The D 50 value and surface area of H 2 Ti 12 O 25 nanorods are 0.186 μm and 35.0637 m 2 g −1 , respectively. For comparison, Bulk-H 2 Ti 12 O 25 are also prepared by milling assisted soft-chemical method, and the D 50 value and surface area of Bulk-H 2 Ti 12 O 25 are 0.274 μm and 4.3213 m 2 g −1 , respectively. The electrochemical tests show H 2 Ti 12 O 25 nanorods deliver higher reversible capacity of 191.3 mAh g −1 (1C) after 100 cycles, 150.5 mAh g −1 (10C) and 132.1 mAh g −1 (20C) after 200 cycles, while for Bulk-H 2 Ti 12 O 25 , its reversible capacity is only 171.2 mAh g −1 (1C) after 100 cycles, 113.7 mAh g −1 (10C) and 83.3 mAh g −1 (20C) after 200 cycles. Meanwhile, H 2 Ti 12 O 25 nanorods exhibit better rate performance at all rates compared with Bulk-H 2 Ti 12 O 25 . The higher discharge/charge capacity and cycling stability at high discharge/charge rate powerfully suggests that H 2 Ti 12 O 25 nanorods hold great potential as high rate anode material for electric vehicles and hybrid electric vehicles. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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