Spatially Interlinked Graphene with Uniformly Loaded Sulfur for High Performance Li-S Batteries
Spatially Interlinked Graphene with Uniformly Loaded Sulfur for High Performance Li-S Batteries作者机构：Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China National Center for Nanoscience and Technology Beijing 100190 China
出 版 物：《Chinese Journal of Chemistry》 (中国化学（英文版）)
年 卷 期：2016年第34卷第1期
页 面：41-45页
核心收录：
学科分类：081702[工学-化学工艺] 081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学]
主 题：Li-S battery graphene three-dimensional graphene/S hybrid different drying methods
摘 要：Lithium-sulfur （Li-S） batteries have drawn extensive attentions due to their high energy density, environmental friendliness and low cost. In this study, three-dimensional （3D） graphene/S hybrid （G/S） is prepared by a one-pot hydrothermal method together with redox reaction between S-based compound and graphene oxide （GO）. G/S has a three dimensional porous structure, where graphene is interconnected with each other forming a 3D conductive network. It demonstrates that the pore structure of G/S can be well controlled by optimizing the drying method of the 3D graphene-based materials. Freeze drying and evaporation-induced drying can induce different density and pore structure of G/S. Electrochemical tests illustrate that the resulting hybrid can deliver a specific capacity of 891 mAh·g^-1 and 575 mAh·g^-1 for the 1^st and 100^th cycle at a current density of 500 mAh·g^-1 .
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