Ye, J. C., Chen, J. J., Yuan, R. M., Deng, D. R., Zheng, M. S., Cronin, L. and Dong, Q. F. (2018) Strategies to explore and develop reversible redox reactions of Li-S in electrode architectures using silver-polyoxometalate clusters. Journal of the American Chemical Society, 140(8), pp. 3134-3138. (doi: 10.1021/jacs.8b00411) (PMID:29425034)
Full text not currently available from Enlighten.
Abstract
Investigations of the Ag (I)-substituted Keggin K3[H3AgI PW11O39] as a bifunctional Lewis acidic and basic catalyst are reported that explore the stabilization of Li2Sn moieties so that reversible redox reactions in S-based electrodes would be possible. Spectroscopic investigations showed that the Li2Sn-moieties can be strongly adsorbed on the {AgI PW11O39} cluster, where the Ag(I) ion can act as a Lewis acid site to further enhance the adsorption of the S-moieties, and these interactions were investigated and rationalized using DFT. These results were used to construct an electrode for use in a Li−S battery with a very high S utilization of 94%, and a coulometric capacity of 1580 mAh g−1 . This means, as a result of using the AgPOM, both a high active S content, as well as a high areal S mass loading, is achieved in the composite electrode giving a highly stable battery with cycling performance at high rates (1050 and 810 mAh g−1 at 1C and 2C over 100 to 300 cycles, respectively).
Item Type: | Articles |
---|---|
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Chen, Dr Jiajia and Cronin, Professor Lee |
Authors: | Ye, J. C., Chen, J. J., Yuan, R. M., Deng, D. R., Zheng, M. S., Cronin, L., and Dong, Q. F. |
College/School: | College of Science and Engineering > School of Chemistry |
Journal Name: | Journal of the American Chemical Society |
Publisher: | American Chemical Society |
ISSN: | 0002-7863 |
ISSN (Online): | 1520-5126 |
Published Online: | 09 February 2018 |
University Staff: Request a correction | Enlighten Editors: Update this record