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Hierarchical nanorod-based TiO2 microspheres for superior electrochemical energy storage

Le, Thi Hang and Le, Thanh Son and Dien, Luong Xuan and Vo, Dai-Viet N. and Truong, Quang Duc (2018) Hierarchical nanorod-based TiO2 microspheres for superior electrochemical energy storage. Journal of Electroanalytical Chemistry, 820. pp. 32-40. ISSN 1572-6657

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Abstract

Nanorod-based rutile TiO2 microspheres composed of numerous single-crystalline nanorodsare successfully fabricated by hydrothermal treatment of peroxo titanic acid in acidic solution. The formation of highly oriented nanorod-based microspheres can be explained in view of crystal growth under the coordination chemistry rule, followed by particle attachment and coalescence. As anodes for Li-ion batteries, the TiO2 microsphere electrodes show enhanced rate performance, deliver a high reversible specific capacity of 180 mAh g−1 at 0.2 C (33.6 mA g−1) and 85.6 mAh g−1 at an extremely high rate of 50 C with an outstanding retention of 47.5%. These remarkable electrode properties are attributed to the efficient electron-transport by the hierarchical conductive pathway which promoted electronic conductivity and the shortened Li+ diffusion length resulting from the ultrafine nanorod structure.

Item Type: Article
Uncontrolled Keywords: Battery; High rate; TiO2; Microspheres
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 05 Dec 2018 01:49
Last Modified: 05 Dec 2018 01:49
URI: http://umpir.ump.edu.my/id/eprint/22945
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