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Electrochemical Characterization of Electrospun LaCoO3 Perovskite Nanofibers Prepared at Different Temperature for Oxygen Reduction and Evolution in Alkaline Solution

다양한 온도에서 합성한 전기방사 LaCoO3 페롭스카이트 나노섬유의 알칼리용액에서 산소환원 및 발생반응에 대한 전기화학 특성

  • Lopez, Kareen J. (Department of Nano & Chemical Engineering, Kunsan National University) ;
  • Sun, Ho-Jung (Department of Material Science & Engineering, Kunsan National University) ;
  • Park, Gyungse (Department of Chemistry, Kunsan National University) ;
  • Eom, Seungwook (Battery Research Center Korea Electrotechnology Research Institute) ;
  • Shim, Joongpyo (Department of Nano & Chemical Engineering, Kunsan National University)
  • Received : 2015.04.14
  • Accepted : 2015.04.30
  • Published : 2015.04.30

Abstract

Electrospun $LaCoO_3$ perovskite nanofibers were produced for the air electrode in Zn-air rechargeable batteries using electrospinning technique with sequential calcination. The final calcination temperature was varied from 500 to $800^{\circ}C$ in order to determine its effect on the physical and electrochemical properties of the prepared $LaCoO_3$ perovskite nanofibers. The surface area of the electrospun $LaCoO_3$ perovskite nanofibers were observed to decrease with increasing final calcination temperature. Electrospun $LaCoO_3$ perovskite nanofibers calcined with final calcination temperature of $700^{\circ}C$ had the best electrocatalytic activity among the prepared perovskite nanofibers.

Keywords

References

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