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Issue 100, 2016
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Superior rate capability of a sulfur composite cathode in a tris(trimethylsilyl)borate-containing functional electrolyte

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Abstract

Lithium sulfur batteries (Li–S) have a 3–5 fold higher theoretical energy density than state-of-the-art lithium-ion batteries. In this work, tris(trimethylsilyl)borate (TMSB) is reported for the first time as an effective electrolyte additive to enhance the electrochemical performance of a Li–S battery. With 1% TMSB additive, the sulfur composite cathodes show good cycling stability and outstanding rate capability, and deliver a highly reversible capacity of 1423 mA h g−1 even at 10C. TMSB participates in the formation of a surface layer on sulfur-pyrolyzed polyacrylonitrile (S@pPAN) cathodes, which accelerates lithium ion diffusion and stabilizes the interface.

Graphical abstract: Superior rate capability of a sulfur composite cathode in a tris(trimethylsilyl)borate-containing functional electrolyte

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Publication details

The article was received on 18 Oct 2016, accepted on 18 Nov 2016 and first published on 18 Nov 2016


Article type: Communication
DOI: 10.1039/C6CC08375G
Chem. Commun., 2016,52, 14430-14433

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    Superior rate capability of a sulfur composite cathode in a tris(trimethylsilyl)borate-containing functional electrolyte

    L. Wang, Q. Li, H. Yang, J. Yang, Y. Nuli and J. Wang, Chem. Commun., 2016, 52, 14430
    DOI: 10.1039/C6CC08375G

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