Preparation and characterization of novel spinel Li4Ti5O12-xBrx anode materials

Yanling Qi; Yudai Huang; Dianzeng Jia; Shu-Juan Bao; Z. P. Guo

doi:10.1016/j.electacta.2009.04.010

Preparation and characterization of novel spinel Li₄Ti₅O_12-xBr_x anode materials

Yanling Qi, Yudai Huang, Dianzeng Jia, Shu-Juan Bao, Z. P. Guo

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

187 Citations (Scopus)

Abstract

Br-doped Li₄Ti₅O₁₂ in the form of Li₄Ti₅O_12-xBr_x (0 ≤ x ≤ 0.3) compounds were successfully synthesized via solid state reaction. The structure and electrochemical properties of the spinel Li₄Ti₅O_12-xBr_x (0 ≤ x ≤ 0.3) materials were investigated. The Li₄Ti₅O_12-xBr_x (x = 0.2) presents the best discharge capacity among all the samples, and shows better reversibility and higher cyclic stability compared with pristine Li₄Ti₅O₁₂, especially at high current rates. When the discharge rate was 0.5 C, the Li₄Ti₅O_12-xBr_x (x = 0.2) sample presented the excellent discharge capacity of 172 mAh g^-1, which was very close to its theoretical capacity (175 mAh g^-1), while that of the pristine Li₄Ti₅O₁₂ was 123.2 mAh g^-1 only. © 2009 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	4772-4776
Journal	Electrochimica Acta
Volume	54
Issue number	21
DOIs	https://doi.org/10.1016/j.electacta.2009.04.010
Publication status	Published - 30 Aug 2009
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to <a href="mailto:[email protected]">[email protected]</a>.

Funding

This work was supported by the Nature Science Foundation of Xinjiang Province (Grant Nos. 200821121 and 200721102), the National Natural Science Foundation of China (Grant Nos. 20666005 and 20661003), and the Australian Research Council through a Discovery project (DP0878611)

Research Keywords

Br-doped
Electrochemical properties
Li4Ti5O12
Lithium-ion batteries
Solid reaction

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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Cite this

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abstract = "Br-doped Li4Ti5O12 in the form of Li4Ti5O12-xBrx (0 ≤ x ≤ 0.3) compounds were successfully synthesized via solid state reaction. The structure and electrochemical properties of the spinel Li4Ti5O12-xBrx (0 ≤ x ≤ 0.3) materials were investigated. The Li4Ti5O12-xBrx (x = 0.2) presents the best discharge capacity among all the samples, and shows better reversibility and higher cyclic stability compared with pristine Li4Ti5O12, especially at high current rates. When the discharge rate was 0.5 C, the Li4Ti5O12-xBrx (x = 0.2) sample presented the excellent discharge capacity of 172 mAh g-1, which was very close to its theoretical capacity (175 mAh g-1), while that of the pristine Li4Ti5O12 was 123.2 mAh g-1 only. {\textcopyright} 2009 Elsevier Ltd. All rights reserved.",

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AU - Bao, Shu-Juan

AU - Guo, Z. P.

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N2 - Br-doped Li4Ti5O12 in the form of Li4Ti5O12-xBrx (0 ≤ x ≤ 0.3) compounds were successfully synthesized via solid state reaction. The structure and electrochemical properties of the spinel Li4Ti5O12-xBrx (0 ≤ x ≤ 0.3) materials were investigated. The Li4Ti5O12-xBrx (x = 0.2) presents the best discharge capacity among all the samples, and shows better reversibility and higher cyclic stability compared with pristine Li4Ti5O12, especially at high current rates. When the discharge rate was 0.5 C, the Li4Ti5O12-xBrx (x = 0.2) sample presented the excellent discharge capacity of 172 mAh g-1, which was very close to its theoretical capacity (175 mAh g-1), while that of the pristine Li4Ti5O12 was 123.2 mAh g-1 only. © 2009 Elsevier Ltd. All rights reserved.

AB - Br-doped Li4Ti5O12 in the form of Li4Ti5O12-xBrx (0 ≤ x ≤ 0.3) compounds were successfully synthesized via solid state reaction. The structure and electrochemical properties of the spinel Li4Ti5O12-xBrx (0 ≤ x ≤ 0.3) materials were investigated. The Li4Ti5O12-xBrx (x = 0.2) presents the best discharge capacity among all the samples, and shows better reversibility and higher cyclic stability compared with pristine Li4Ti5O12, especially at high current rates. When the discharge rate was 0.5 C, the Li4Ti5O12-xBrx (x = 0.2) sample presented the excellent discharge capacity of 172 mAh g-1, which was very close to its theoretical capacity (175 mAh g-1), while that of the pristine Li4Ti5O12 was 123.2 mAh g-1 only. © 2009 Elsevier Ltd. All rights reserved.

KW - Br-doped

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KW - Lithium-ion batteries

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