TY - JOUR
T1 - Doped ceria electrolyte rich in oxygen vacancies for boosting the fuel cell performance of LT-CFCs
AU - Yousaf Shah, M. A.K.
AU - Lu, Yuzheng
AU - Mushtaq, Naveed
AU - Yousaf, Muhammad
AU - Zhu, Bin
N1 - Publisher Copyright:
© 2022 Hydrogen Energy Publications LLC
PY - 2023/4/19
Y1 - 2023/4/19
N2 - Multifunctional semiconductor CeO2 is used as an electrolyte for a fuel cell application, delivering meaningful power density and better OCV. Further, surface doping of Al was employed to attain the CeAlO2 (ADC) electrolyte with enriched O-vacancies surface layer enabling high ionic conduction and excellent power density of 1020 mW/cm2 at 520 °C. It is noticed that surface doping entailed the band alignment between CeO2 and ADC due to the difference in Fermi level establishing space charge region, which further constitutes built-in field enhancing the charge transportation and minimizing the e-conduction. Furthermore, the theoretical calculation was performed to assist the formation of O-vacancies in the ADC structure. These findings suggest surface doping is the best approach to attain excellent performance and designing new electrolytes and electrodes for advanced low-temperature ceramic fuel cell technology.
AB - Multifunctional semiconductor CeO2 is used as an electrolyte for a fuel cell application, delivering meaningful power density and better OCV. Further, surface doping of Al was employed to attain the CeAlO2 (ADC) electrolyte with enriched O-vacancies surface layer enabling high ionic conduction and excellent power density of 1020 mW/cm2 at 520 °C. It is noticed that surface doping entailed the band alignment between CeO2 and ADC due to the difference in Fermi level establishing space charge region, which further constitutes built-in field enhancing the charge transportation and minimizing the e-conduction. Furthermore, the theoretical calculation was performed to assist the formation of O-vacancies in the ADC structure. These findings suggest surface doping is the best approach to attain excellent performance and designing new electrolytes and electrodes for advanced low-temperature ceramic fuel cell technology.
KW - Ceramic fuel cells (CFCs)
KW - Energy band alignment
KW - High ionic conductivity
KW - Surface doping
UR - https://www.scopus.com/pages/publications/85145675821
U2 - 10.1016/j.ijhydene.2022.12.153
DO - 10.1016/j.ijhydene.2022.12.153
M3 - 文章
AN - SCOPUS:85145675821
SN - 0360-3199
VL - 48
SP - 12474
EP - 12484
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 33
ER -
