TY - JOUR
T1 - Investigations on Positive (Sm3+) and Negative (Ho3+) Association Energy Ion Co-doped Cerium Oxide Solid Electrolytes for IT-SOFC Applications
AU - Kalpana Devi, Ayyanathan
AU - Ram kumar, Gurusamy
AU - Prerna, Chaturvedi
AU - Amarsingh Bhabu, Kanagaraj
AU - Daniel, Choi
AU - Sabarinathan, Venkatachalam
AU - Rajasekaran, Thanjavur Renganathan
N1 - Funding Information:
Kalpana Devi Ayyanathan thanks the Rashtriya Uchchatar Shiksha Abhiyan (RUSA), Government of India, for providing the characterization facilities at the Department of Renewable Energy Science, Manonmaniam Sundaranar University, Tirunelveli, Tamilnadu, India.
Publisher Copyright:
© 2021, The Minerals, Metals & Materials Society.
PY - 2021/9
Y1 - 2021/9
N2 - Novel compositions of positive (Sm3+) and negative (Ho3+) association energy ion co-doped cerium oxide solid electrolytes were synthesized and analyzed for intermediate-temperature solid oxide fuel cell (IT-SOFC) applications. Powder x-ray diffraction (XRD) and Raman studies confirmed the phase of pure cubic fluorite structure, while densely packed porous-structured morphology was affirmed with high-resolution scanning electron microscope (HR-SEM) micrographs. The formations of oxygen vacancies and association energies were analyzed through optical properties using ultraviolet (UV) and photoluminescence (PL) spectra. Thermal analysis revealed high thermal stability without any structural deformations and a high thermal expansion coefficient at the intermediate temperature range. The incorporation of Sm3+ ions acts as an oxygen vacancy generator which influences the ionic conductivity properties, and Ce0.8Sm0.1Ho0.1O2−δ solid electrolyte showed the high conductivity of 0.72 × 10−2 S/cm at 600°C specifying that this solid electrolyte might be an excellent candidate for IT-SOFC applications.
AB - Novel compositions of positive (Sm3+) and negative (Ho3+) association energy ion co-doped cerium oxide solid electrolytes were synthesized and analyzed for intermediate-temperature solid oxide fuel cell (IT-SOFC) applications. Powder x-ray diffraction (XRD) and Raman studies confirmed the phase of pure cubic fluorite structure, while densely packed porous-structured morphology was affirmed with high-resolution scanning electron microscope (HR-SEM) micrographs. The formations of oxygen vacancies and association energies were analyzed through optical properties using ultraviolet (UV) and photoluminescence (PL) spectra. Thermal analysis revealed high thermal stability without any structural deformations and a high thermal expansion coefficient at the intermediate temperature range. The incorporation of Sm3+ ions acts as an oxygen vacancy generator which influences the ionic conductivity properties, and Ce0.8Sm0.1Ho0.1O2−δ solid electrolyte showed the high conductivity of 0.72 × 10−2 S/cm at 600°C specifying that this solid electrolyte might be an excellent candidate for IT-SOFC applications.
UR - https://www.scopus.com/pages/publications/85098660716
U2 - 10.1007/s11837-020-04500-1
DO - 10.1007/s11837-020-04500-1
M3 - Article
AN - SCOPUS:85098660716
SN - 1047-4838
VL - 73
SP - 2754
EP - 2763
JO - JOM
JF - JOM
IS - 9
ER -
