Published 2022 | Version v1
Journal article Metadata-only

Electrical Characterization of Irradiated-La0.6 Sr0.4 Co0.2 Fe0.8 O3 Cathodes for Intermediate-Temperature SOFCs Applications

Creators

  • 1. Department of Solids, NCRRT, Atomic Energy Authority, Cairo (Egypt)
  • 2. Department of Petroleum and Mining, Faculty of Engineering, Al-Azhar University, Cairo (Egypt)
  • 3. Department of Steel, Central Metallurgical Research and Development Institute, Cairo (Egypt)
  • 4. Department of Nuclear Physics, Cyclotron Facility, Nuclear Research Center, Atomic Energy Authority, Cairo (Egypt)

Description

Developing low-polarization and stable cathodes is a key element to the success of intermediate-temperature solid oxide fuel cells (IT-SOFCs). Here we report a study on the electrochemical performance and stability of a La0.6Sr0.4Co0.2 Fe0.8O3-δ (LSCF) cathode material using gamma irradiation approach; with different doses namely, 20 kGy, 250 kGy and 500 kGy. This is an innovative method; which has an tremendous effect on the Morphology and electrical properties. LSCF cathode samples were systematically characterized using X-ray diffraction (XRD), photoluminescence (PL), high resolution transmission electron microscope (HRTEM), and BET surface area analyzer. The occupancy of oxygen vacancies in the samples was conceded by PL studies. Electrical properties were investigated for both the un irradiated and irradiated (LSCF) samples at various operating temperatures from room temperature up to 400 degree C. This novel study shows that the cathode performance was strongly influenced by particle size, surface area and formation of oxygen vacancies. All physical and electrical properties for LSCF samples were improved by using gamma radiation approach; which has a high impact on the cell performance

Additional details

Publishing Information

Journal Title
Egyptian Journal of Radiation Sciences and Applications (Online)
Journal Volume
35
Journal Issue
1
Journal Page Range
p. 57-68
ISSN
2314-8527

INIS

Country of Publication
Egypt
Country of Input or Organization
Egypt
INIS RN
56006897
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ELECTRICAL PROPERTIES; GAMMA RADIATION; OXYGEN; PHOTOLUMINESCENCE; PHYSICAL PROPERTIES; SOLID OXIDE FUEL CELLS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION
Descriptors DEC
COHERENT SCATTERING; DIFFRACTION; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; ELECTROMAGNETIC RADIATION; ELECTRON MICROSCOPY; ELEMENTS; EMISSION; FUEL CELLS; HIGH-TEMPERATURE FUEL CELLS; IONIZING RADIATIONS; LUMINESCENCE; MICROSCOPY; NONMETALS; PHOTON EMISSION; PHYSICAL PROPERTIES; RADIATIONS; SCATTERING; SOLID ELECTROLYTE FUEL CELLS