Coralloid and hierarchical Co3O4 nanostructures used as supercapacitors with good cycling stability

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• 作者：Xiuhua Wang ; Xiaoxiu Wu ; Bingang Xu ; Tao Hua
• 刊名：Journal of Solid State Electrochemistry
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：20
• 期：5
• 页码：1303-1309
• 全文大小：652 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

Coralloid and hierarchical Co₃O₄ nanostructures were synthesized by a facile two-step approach composed of room temperature solution-phase synthesis without any surfactant and calcination of precursor. Owing to the unique structural features, the capacitance of Co₃O₄ could reach up to 591 F g−1 at a current density of 0.5 A g−1. Especially the cycling stability remained about 97 % after 2000 cycles at a current density of 1 A g−1. These results demonstrated that the coralloid and hierarchical Co₃O₄ were excellent candidates for electrochemical supercapacitor devices.KeywordsCo(OH)₂ nanosheetsCoralloid Co₃O₄SupercapacitorSolution-phase processHierarchical