Influence of Fe3O4 nanoparticles on pseudocapacitive behavior of the charge storage process

Chien Chon Chen, Chin Yi Chen, Chien Yie Tsay, Sih Ying Wang, Chung Kwei Lin

研究成果: 雜誌貢獻文章同行評審

7 引文 斯高帕斯(Scopus)

摘要

Nano-crystalline Fe3O4 powders were added to form manganese oxide/iron oxide composite film electrode in order to combine the excellent capacitance characteristics of manganese oxide and iron oxide. Due to the addition of Fe3O4, the crack film formation increases the contact area of electrolyte and electrode and the surface and electronic conductivity of pseudo-capacitors increased. The specific capacitance value can be enhanced by adding iron oxide. The surface of the composite film with Fe3O4 added had small holes due to the burnout of organics, and the network of nano-powders formed uniform and fine pores at 300 °C annealing. The EXAFS results to the XRD results, the peaks shift due to the formation of Mn3O4 and Mn2O3 between 250 and 350 °C. The best results in this study were 316.1 F/g obtained at 1 at.% of manganese oxide/iron oxide composite film electrode after 300 °C annealing. The 1 at.% manganese oxide/iron oxide composite film electrode after 1000 cycles, the highest specific capacitance value was 85.8%. The results showed that manganese oxide/iron oxide composite film electrode have good cycle stability of capacitance.
原文英語
頁(從 - 到)250-258
頁數9
期刊Journal of Alloys and Compounds
645
DOIs
出版狀態已發佈 - 五月 19 2015

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

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