Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 12, Issue 3, Pages 479-482Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2010.01.024
Keywords
Si nanoparticles; 4-Carboxyphenyl groups; Covalently grafting; Diazonium chemistry; Lithium storage capacity
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Funding
- Natural Science Foundation of China [50803013]
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In this study, the lithium storage capacity of Si nanoparticles is significantly enhanced by grafting with 4-carboxyphenyl groups via diazonium salts. The modified Si anodes exhibit reversible capacities of 1173 and 527 mA h g(-1) at the 1st and 50th cycle, while those of the bare Si electrodes are only 56 and 62 mA h g(-1), respectively. The improved electrochemical performance is supposed to arise from the formation of a robust and flexible solid electrolyte interface on the surfaces of the modified Si nanoparticles. (C) 2010 Elsevier B.V. All rights reserved.
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