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Erschienen in:
15.05.2018
Iodine/β-cyclodextrin composite cathode for rechargeable lithium-iodine batteries
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 13/2018
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Abstract
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.