Study of the Microwave Heating Energy Effect on the Electrochemical Performance of GDCSr Electrospun Nanofiber Composite Cathode for Intermediate SOFC

Ika Dewi Wijayanti*, Putu Suwarta, Chen Chia Chou

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The effect of microwave heating energy on the Ce0.78Gd0.2Sr0.02O2-δ (GDCSr) electrospun nanofiber composite cathode was studied. Two compositions containing 50 and 80 wt.% GDCSr nanofibers were mixed with LSCF6428 powder (L5G5 and L2G8). A temperature set of 900, 1000, and 1100 °C for 1 h were selected to perform microwave heating. The electrochemical performance was carried out at 500–800 °C. The phase composition and morphology of the composite cathode microstructure were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). A porosity value close to 50% was achieved by the L5G5 composite cathode using the Archimedes method. As much 68.1 mA/cm2 of I0 and 1.6 Ω of resistance polarization were achieved by L5G5 cathode. The excellent collaboration between the unique properties of nanofibers and the selective heating properties of microwave energy enhances the electrochemical properties of composite cathode. Thus, a large number of triple boundary phase (TPB) sites can be effectively formed improving the transportation of oxygen ions into the electrolyte.

Original languageEnglish
Title of host publicationRecent Advances in Mechanical Engineering - Select Proceedings of ICOME 2021
EditorsIvan Tolj, M.V. Reddy, Achmad Syaifudin
PublisherSpringer Science and Business Media Deutschland GmbH
Pages112-120
Number of pages9
ISBN (Print)9789811908668
DOIs
Publication statusPublished - 2023
Event5th International Conference on Mechanical Engineering, ICOME 2021 - Virtual, Online
Duration: 25 Aug 202126 Aug 2021

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364

Conference

Conference5th International Conference on Mechanical Engineering, ICOME 2021
CityVirtual, Online
Period25/08/2126/08/21

Keywords

  • Composite cathode
  • Electrochemical performance
  • Electrospun nanofiber
  • Intermediate SOFC
  • Microwave heating energy

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