Multishelled TiO2 hollow microspheres as anodes with superior reversible capacity for lithium ion batteries

Ren, Hao and Yu, Ranbo and Wang, Jiangyan and Jin, Quan and Yang, Mei and Mao, Dan and Kisailus, David and Zhao, Huijun and Wang, Dan (2014) Multishelled TiO2 hollow microspheres as anodes with superior reversible capacity for lithium ion batteries. Nano Letters, 14 (11). pp. 6679-6684. ISSN 1530-6984

Abstract

Herein, uniform multishelled TiO2 hollow microspheres were synthesized, especially 3- and 4-shelled TiO2 hollow microspheres were synthesized for the first time by a simple sacrificial method capable of controlling the shell thickness, intershell spacing, and number of internal multishells, which are achieved by controlling the size, charge, and diffusion rate of the titanium coordination ions as well as the calcination process. Used as anodes for lithium ion batteries, the multishelled TiO2 hollow microspheres show excellent rate capacity, good cycling performance, and high specific capacity. A superior capacity, up to 237 mAh/g with minimal irreversible capacity after 100 cycles is achieved at a current rate of 1 C (167.5 mA/g), and a capacity of 119 mAh/g is achieved at a current rate of 10 C even after 1200 cycles.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 16 Jun 2017 04:07
Last Modified: 16 Jun 2017 04:07
Uncontrolled Keywords: Anode; Electrode; Hollow microsphere; Lithium ion battery; Multishelled; TiO2; High specific capacity; Hollow microsphere; Irreversible capacity; Lithium-ion battery; multishelled; Reversible capacity; TiO; Titanium coordination; Alkali Metals; Electric Batteries and Fuel Cells; Electric Components; Chemistry; Chemical Plants and Equipment; Inorganic Compounds; Glass;
Fields of Research : 03 Chemical Sciences > 0303 Macromolecular and Materials Chemistry > 030399 Macromolecular and Materials Chemistry not elsewhere classified
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970103 Expanding Knowledge in the Chemical Sciences
Identification Number or DOI: 10.1021/nl503378a
URI: http://eprints.usq.edu.au/id/eprint/31948

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