title: Superior rate capability of a sulfur composite cathode in a tris(trimethylsilyl)borate-containing functional electrolyte.
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-1even 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.
authors.affiliation: Shanghai Electrochemical Energy Devices Research Center, Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. wangjiulin@sjtu.edu.cn.
authors.forename: Lina
authors.initials: L
authors.lastname: Wang
authors.affiliation: Shanghai Electrochemical Energy Devices Research Center, Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. wangjiulin@sjtu.edu.cn.
authors.forename: Qinyu
authors.initials: Q
authors.lastname: Li
authors.affiliation: Shanghai Electrochemical Energy Devices Research Center, Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. wangjiulin@sjtu.edu.cn.
authors.forename: Huijun
authors.initials: H
authors.lastname: Yang
authors.affiliation: Shanghai Electrochemical Energy Devices Research Center, Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. wangjiulin@sjtu.edu.cn.
authors.forename: Jun
authors.initials: J
authors.lastname: Yang
authors.affiliation: Shanghai Electrochemical Energy Devices Research Center, Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. wangjiulin@sjtu.edu.cn.
authors.forename: Yanna
authors.initials: Y
authors.lastname: Nuli
authors.affiliation: Shanghai Electrochemical Energy Devices Research Center, Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. wangjiulin@sjtu.edu.cn.
authors.forename: Jiulin
authors.initials: J
authors.lastname: Wang