Co₃O₄ nanorods–graphene composites as catalysts for rechargeable zinc-air battery

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• 作者：Qiang Shen ; Jun Yang ; Kai Lun Chen ; Hao Wang…
• 关键词：Co3O4 ; Graphene ; Air ; oxygen diffusion electrode ; Rechargeable zinc ; air battery
• 刊名：Journal of Solid State Electrochemistry
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：20
• 期：12
• 页码：3331-3336
• 全文大小：1,165 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Physical Chemistry
  Analytical Chemistry
  Industrial Chemistry and Chemical Engineering
  Characterization and Evaluation Materials
  Condensed Matter
  Electronic and Computer Engineering
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1433-0768
• 卷排序：20

文摘

Composite of Co₃O₄ nanorods with reduced graphene oxide (RG-Co₃O₄) for rechargeable zinc-air battery was prepared by a facile method. The Co₃O₄ nanorods with a length of 1–2 μm were homogeneously distributed on the surface of plicated graphene nanosheets. The samples were characterized by X-ray diffraction, scanning electron microscopy, and Raman spectroscopy. The RG-Co₃O₄ composite showed better electrode potential and higher electrical conductivity compared with pure Co₃O₄. The zinc-air battery can be reversibly charged and discharged for hundred cycles with a good cycle performance. The improved battery performance of RG-Co₃O₄ can be attributed to the synergistic coupling effect between the graphene sheets and Co₃O₄.