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Superior Rate Capability of a Sulfur Composite Cathode in a Tris(trimethylsilyl)borate-Containing Functional Electrolyte

Superior Rate Capability of a Sulfur Composite Cathode in a Tris(trimethylsilyl)borate-Containing Functional Electrolyte

Lina Wang, Qinyu Li, Huijun Yang, Jun Yang, Yanna Nuli, Jiulin Wang

Chem Commun (Camb). 2016 Dec 13;52(100):14430-14433.

PMID: 27901523

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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP4325853	Tris(trimethylsilyl) borate		4325-85-3	Price

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