Iodine/β-cyclodextrin composite cathode for rechargeable lithium-iodine batteries

Iodine/β-cyclodextrin (iodine/β-CD) inclusion complex was prepared via a simple saturated water solution route. The truncated cone-shaped and hydrophobic central cavity structure of β-CD could effectively encapsulate iodine molecules to confine the iodine within the electrode. The Li-iodine battery...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2018-07, Vol.29 (13), p.11540-11545
Main Authors: Cai, Feng-shi, Duan, Yue-qin, Yuan, Zhi-hao
Format: Article
Language:English
Subjects:
Cathodes
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cyclodextrins
Electrode materials
Electrodes
Iodine
Lithium
Materials Science
Optical and Electronic Materials
Rechargeable batteries
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Summary:Iodine/β-cyclodextrin (iodine/β-CD) inclusion complex was prepared via a simple saturated water solution route. The truncated cone-shaped and hydrophobic central cavity structure of β-CD could effectively encapsulate iodine molecules to confine the iodine within the electrode. The Li-iodine battery with iodine/β-CD cathode delivers the initial specific discharge capacity of 175 mAh g −1 at 0.1 C, and remains 164 mAh g −1 after 300 cycles owing to the favorable distribution and the retention of the iodine in the truncated cone-shaped β-CD matrix. Results demonstrate that β-CD as host electrode material could improve the stability of iodine-based cathode, showing great potential as a low-cost and facile cathode in Li-iodine batteries.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-018-9249-z