A ternary sulphonium composite Cu3BiS3/S as cathode materials for lithium–sulfur batteries

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• 作者：Xiang Gao ; Yan Wang ; Zengsheng Ma ; Wenjuan Jiang…
• 刊名：Journal of Materials Science
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：51
• 期：11
• 页码：5139-5145
• 全文大小：2,413 KB
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• 作者单位：Xiang Gao (1)
  Yan Wang (2) (3)
  Zengsheng Ma (1)
  Wenjuan Jiang (1)
  Youlan Zou (1)
  Chunsheng Lu (3)
  
  1. National–Provincial Laboratory of Special Function Thin Film Materials, and School of Materials Science and Engineering, Xiangtan University, Hunan, 411105, China
  2. School of Information and Electronic Engineering, Hunan University of Science and Technology, Hunan, 411201, China
  3. Department of Mechanical Engineering, Curtin University, Perth, WA, 6845, Australia
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Materials Science
  Characterization and Evaluation Materials
  Polymer Sciences
  Continuum Mechanics and Mechanics of Materials
  Crystallography
  Mechanics
  
• 出版者：Springer Netherlands
• ISSN：1573-4803

文摘

In this paper, we synthesized a new cathode material (Cu₃BiS₃) by a solvothermal method for high-performance lithium–sulfur batteries. Cu₃BiS₃ with a unique flower structure was characterized using the X-ray diffraction, energy-dispersive X-ray spectrometer, and scanning electron microscopy. It is shown that the Cu₃BiS₃/S flower exhibits a high initial capacity of 1343 mAh g−1 at 0.2 C, and although a capacity fade in subsequent cycles occurs due to polysulfide dissolution and shuttle mechanism, 487 mAh g−1 at 0.2 C can be retained after 100 cycles with the 90–95 % coulombic efficiency.