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Pyrolyzed bacterial cellulose/graphene oxide sandwich interlayer for lithium–sulfur batteries

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  • 【题名】:Pyrolyzed bacterial cellulose/graphene oxide sandwich interlayer for lithium–sulfur batteries
  • 【年份】:2017
  • 【作者】:Yu-Di Shen,Zhi-Chang Xiao,Li-Xiao Miao,De-Bin Kong,Xiao-Yu Zheng,Yan-Hong Chang,Lin-Jie Zhi
  • 【摘要】:Herein, a facile strategy for the synthesis of sandwich pyrolyzed bacterial cellulose(PBC)/graphene oxide(GO) composite was reported simply by utilizing the large-scale regenerated biomass bacterial cellulose as precursor. The unique and delicate structure where three-dimensional interconnected bacterial cellulose(BC) network embedded in two-dimensional GO skeleton could not only work as an effective barrier to retard polysulfide diffusion during the charge/discharge process to enhance the cyclic stability of the Li–S battery, but also offer a continuous electron transport pathway for the improved rate capability.As a result, by utilizing pure sulfur as cathodes, the Li–S batteries assembled with PBC/GO interlayer can still exhibit a capacity of nearly 600 mAh·g-1 at 3C and only 0.055% capacity decay per cycle can be observed over 200 cycles. Additionally, the cost-efficient and environmentfriendly raw materials may enable the PBC/GO sandwich interlayer to be an advanced configuration for Li–S batteries.
  • 【期刊名】:稀有金属(英文版)
  • 【分类号】:TB332;TM912
  • 【期号】:第5期
  • 【资金项目】:financially supported by the ministry of science and technology of china (no. 2012cb933403);the national natural science foundation of china (nos. 51425302 and 51302045);the beijing municipal science and technology commission (no. z121100006812003)
  • 【作者单位】:Chinese Academy of Sciences Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology;Department of Environmental Engineering, University of Science and Technology of Beijing;Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science and Technology of Beijing;Institute of Forensic Science, Ministry of Public Security
  • 【页码】:418-424
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