Abstract
AbstractAs one of the essential components in electrodes, the binder affects the performance of a rechargeable battery. By modifying β‐cyclodextrin (β‐CD), an appropriate binder for sulfur composite cathodes is identified. Through a partial oxidation reaction in H2O2 solution, β‐CD is successfully modified to carbonyl‐β‐cyclodextrin (C‐β‐CD), which exhibits a water solubility ca. 100 times that of β‐CD at room temperature. C‐β‐CD possesses the typical properties of an aqueous binder: strong bonding strength, high solubility in water, moderate viscosity, and wide electrochemical windows. Sulfur composite cathodes with C‐β‐CD as the binder demonstrate a high reversible capacity of 694.2 mA h g(composite)−1 and 1542.7 mA h g(sulfur)−1, with a sulfur utilization approaching 92.2%. The discharge capacity remains at 1456 mA h g(sulfur)−1 after 50 cycles, which is much higher than that of the cathode with unmodified β‐CD as binder. Combined with its low cost and environmental benignity, C‐β‐CD is a promising binder for sulfur cathodes in rechargeable lithium batteries with high electrochemical performance.
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Dates
Type | When |
---|---|
Created | 12 years, 10 months ago (Oct. 4, 2012, 4:15 a.m.) |
Deposited | 1 year, 10 months ago (Oct. 11, 2023, 3:11 a.m.) |
Indexed | 2 weeks, 2 days ago (Aug. 5, 2025, 8:19 a.m.) |
Issued | 12 years, 10 months ago (Oct. 4, 2012) |
Published | 12 years, 10 months ago (Oct. 4, 2012) |
Published Online | 12 years, 10 months ago (Oct. 4, 2012) |
Published Print | 12 years, 5 months ago (March 6, 2013) |
@article{Wang_2012, title={Carbonyl‐β‐Cyclodextrin as a Novel Binder for Sulfur Composite Cathodes in Rechargeable Lithium Batteries}, volume={23}, ISSN={1616-3028}, url={http://dx.doi.org/10.1002/adfm.201201847}, DOI={10.1002/adfm.201201847}, number={9}, journal={Advanced Functional Materials}, publisher={Wiley}, author={Wang, Jiulin and Yao, Zhendong and Monroe, Charles W. and Yang, Jun and Nuli, Yanna}, year={2012}, month=oct, pages={1194–1201} }