https://scholars.lib.ntu.edu.tw/handle/123456789/408989
標題: | Nb-Doped Rutile TiO2 Mesocrystals with Enhanced Lithium Storage Properties for Lithium Ion Battery | 作者: | Lan T. Zhang W. Wu N.-L. Wei M. |
關鍵字: | conducting materials;lithium-ion batteries;mesocrystals;rutile;TiO2 | 公開日期: | 2017 | 卷: | 23 | 期: | 21 | 起(迄)頁: | 5059-5065 | 來源出版物: | Chemistry - A European Journal | 摘要: | A homogeneous Nb-doped rutile TiO2 mesocrystal material was synthesized successfully through a facile hydrothermal route. The incorporation of Nb5+ not only promotes the crystallization of the building subunits of the rutile TiO2 mesocrystal, but also improves the electrochemical performance at higher current rates. A capacity of 96.3 mAh g?1 at a current density as high as 40 C and an excellent long-term cycling stability with a capacity loss of approximately 0.006 % per cycle at 5 C could be achieved when an appropriate amount of Nb5+ was doped into rutile TiO2 mesocrystal. The reasons for the improvement of rate capability may be attributed to the enhancement of electronic conductivity, Li-ion diffusion kinetics, and the surface storage property for the Nb-doped rutile TiO2 mesocrystal. ? 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/408989 | ISSN: | 09476539 | DOI: | 10.1002/chem.201605115 | SDG/關鍵字: | Electric batteries; Ions; Lithium; Lithium alloys; Lithium compounds; Oxide minerals; Secondary batteries; Titanium dioxide; Conducting materials; Electrochemical performance; Electronic conductivity; Hydrothermal routes; Lithium storage properties; Mesocrystals; Rate capabilities; Rutile; Lithium-ion batteries |
顯示於: | 化學工程學系 |
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