Molybdenum dioxide-anchored graphene foam as a negative electrode material for supercapacitors

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• 作者：Xuemei Mu ; Xiaozhi Liu ; Ke Zhang ; Jian Li ; Jinyuan Zhou…
• 关键词：molybdenum dioxide ; 3D graphene foam ; negative electrode material ; supercapacitor
• 刊名：Electronic Materials Letters
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：12
• 期：2
• 页码：296-300
• 全文大小：1,809 KB
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• 作者单位：Xuemei Mu (1)
  Xiaozhi Liu (2)
  Ke Zhang (2)
  Jian Li (3)
  Jinyuan Zhou (1) (3)
  Erqing Xie (1) (3)
  Zhenxing Zhang (1) (3)
  
  1. School of Physical Science and Technology, Lanzhou University, Lanzhou, 730000, P. R. China
  2. Cuiying Honors College, Lanzhou University, Lanzhou, 730000, P. R. China
  3. Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, P. R. China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Condensed Matter Physics
  Electronics, Microelectronics and Instrumentation
  Optical and Electronic Materials
  Thermodynamics
  Characterization and Evaluation of Materials
  
• 出版者：The Korean Institute of Metals and Materials, co-published with Springer Netherlands
• ISSN：2093-6788

文摘

Molybdenum dioxide nanoparticles of diameter 100 nm were anchored uniformly to a three-dimensional (3D) graphene foam using an ultrasonication-assisted deposition method. X-ray diffraction and Raman spectroscopy indicated that the molybdenum dioxide nanoparticles had a monoclinic crystal structure. The 3D graphene/MoO₂ nanoparticle composite showed excellent pseudocapacitive ability as its specific capacitance reached 404 F g−1 at a scan rate of 2 mV s−1 in the negative potential range, −1.0 to −0.2 V, in a neutral solution. Overall, the 3D graphene/MoO₂ nanoparticle composite has great potential as an anode material for the next generation of high-performance supercapacitors.