title: Leaf-Like Graphene-Oxide-Wrapped Sulfur for High-Performance Lithium-Sulfur Battery.
abstract: Carbon/sulfur composites are attracting extensive attention because of their improved performances for Li-S batteries. However, the achievements are generally based on the low S-content in the composites and the low S-loading on the electrode. Herein, a leaf-like graphene oxide (GO), which includes an inherent carbon nanotube midrib in the GO plane, is synthesized for preparing GO/S composites. Owing to the inherent high conductivity of carbon nanotube midribs and the abundant surface groups of GO for S-immobilization, the composite with an S-content of 60 wt% exhibits ultralong cycling stability over 1000 times with a low capacity decay of 0.033% per cycle and a high rate up to 4C. When the S-content is increased to 75 wt%, the composite still shows a perfect cycling performance over 1000 cycles. Even with the high S-loading of 2.7 mg cm-2on the electrode and the high S-content of 85 wt%, it still shows a promising cycling performance over 600 cycles.
authors.affiliation: Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Fudan University Shanghai 200433 P.R. China.
authors.forename: Shouyi
authors.initials: S
authors.lastname: Yuan
authors.affiliation: Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Fudan University Shanghai 200433 P.R. China.
authors.forename: Ziyang
authors.initials: Z
authors.lastname: Guo
authors.affiliation: Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Fudan University Shanghai 200433 P.R. China.
authors.forename: Lina
authors.initials: L
authors.lastname: Wang
authors.affiliation: Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Fudan University Shanghai 200433 P.R. China.
authors.forename: Shuang
authors.initials: S
authors.lastname: Hu
authors.affiliation: Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Fudan University Shanghai 200433 P.R. China.
authors.forename: Yonggang
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Fudan University Shanghai 200433 P.R. China.
authors.forename: Yongyao
authors.initials: Y
authors.lastname: Xia
keywords: carbon nanotube midribs; leaf‐like graphene oxides; lithium sulfur batteries; sulfur cathodes