title: A facile synthesis of three dimensional graphene sponge composited with sulfur nanoparticles for flexible Li-S cathodes.
abstract: Compared with a two dimensional graphene sheet, a three dimensional (3D) graphene sponge has a continuous conductive structure and numerous pores, which are beneficial for sulfur utilization and anchoring. However, strategies for the construction of 3D graphene sponges composited with sulfur nanoparticles (3DGS) are either energy consuming or involve toxic reagents. Herein, a 3DGS is fabricated via a reduction induced self-assembly method, which is simple but facile and scalable. The structural design of this 3DGS promises fast Li(+) transport, superior electrolyte absorbability and effective electrochemical redox reactions of sulfur. As a result, this 3DGS achieves a stable capacity of 580 mA h g(-1) after 500 cycles at a high rate of 1.5 A g(-1), which corresponds to a low fading rate of 0.043% per cycle. The present study effectively demonstrates that the 3D construction strategy is propitious for obtaining flexible high performance Li-S batteries.
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China. mlq518@whut.edu.cn.
authors.forename: Chao
authors.initials: C
authors.lastname: Lin
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China. mlq518@whut.edu.cn.
authors.forename: Chaojiang
authors.initials: C
authors.lastname: Niu
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China. mlq518@whut.edu.cn.
authors.forename: Xu
authors.initials: X
authors.lastname: Xu
authors.affiliation: State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China. xuyuxi@fudan.edu.cn.
authors.forename: Ke
authors.initials: K
authors.lastname: Li
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China. mlq518@whut.edu.cn.
authors.forename: Zhengyang
authors.initials: Z
authors.lastname: Cai
authors.affiliation: State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China. xuyuxi@fudan.edu.cn.
authors.forename: Yonglai
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China. mlq518@whut.edu.cn.
authors.forename: Xuanpeng
authors.initials: X
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China. mlq518@whut.edu.cn.
authors.forename: Longbing
authors.initials: L
authors.lastname: Qu
authors.affiliation: State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China. xuyuxi@fudan.edu.cn.
authors.forename: Yuxi
authors.initials: Y
authors.lastname: Xu
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China. mlq518@whut.edu.cn.
authors.forename: Liqiang
authors.initials: L
authors.lastname: Mai