TY - JOUR
T1 - Microstructural analysis of highly active cathode material La0.7Sr0.3Ti0.15Fe0.65Ni0.2O3-δ (LSTFN) by optimizing different processing parameters
AU - Hanif, Muhammad Bilal
AU - Gao, Jiu Tao
AU - qayyum, Sana
AU - Shaheen, Kausar
AU - Wang, Yue Peng
AU - Yasir, Muhammad
AU - Li, Chang Jiu
AU - Li, Cheng Xin
N1 - Publisher Copyright:
© 2020 Elsevier Ltd and Techna Group S.r.l.
PY - 2021/4/15
Y1 - 2021/4/15
N2 - The modified Pechini method was applied to prepare a highly active and novel cathode material La0.7Sr0.3Ti0.15Fe0.65Ni0.2O3-δ (LSTFN). This material was coated on the LGSM electrolyte through a screen-printing technique with variable thicknesses of 28 ± 8, 41 ± 8, and 62 ± 8 μm, respectively. Different fabrication parameters, including sintering temperature, time, coating thickness, and variations in ball-milling, which affect the electrochemical performance of the cathode material, were investigated. X-ray diffraction analysis of the cathode material suggested that it exhibits a cubic crystal structure with a LSTFN single phase. The morphological studies were conducted using scanning electron microscopy (SEM), which confirmed that the electrode material had a highly porous structure. Meanwhile, the electrochemical properties of the material were studied by electrochemical impedance spectroscopy (EIS), which revealed that by varying different parameters, the electrochemical performance of the electrode material was enhanced. The coated cathode materials with variable thicknesses were analyzed at different sintering temperatures and times. Experimental results suggest that the optimum sintering temperature and time were 950 °C and 3 h, respectively, at which LSTFN exhibits the minimum polarization resistance (RP) of 0.046 Ωcm2 when sintered at 800 °C for 3 h.
AB - The modified Pechini method was applied to prepare a highly active and novel cathode material La0.7Sr0.3Ti0.15Fe0.65Ni0.2O3-δ (LSTFN). This material was coated on the LGSM electrolyte through a screen-printing technique with variable thicknesses of 28 ± 8, 41 ± 8, and 62 ± 8 μm, respectively. Different fabrication parameters, including sintering temperature, time, coating thickness, and variations in ball-milling, which affect the electrochemical performance of the cathode material, were investigated. X-ray diffraction analysis of the cathode material suggested that it exhibits a cubic crystal structure with a LSTFN single phase. The morphological studies were conducted using scanning electron microscopy (SEM), which confirmed that the electrode material had a highly porous structure. Meanwhile, the electrochemical properties of the material were studied by electrochemical impedance spectroscopy (EIS), which revealed that by varying different parameters, the electrochemical performance of the electrode material was enhanced. The coated cathode materials with variable thicknesses were analyzed at different sintering temperatures and times. Experimental results suggest that the optimum sintering temperature and time were 950 °C and 3 h, respectively, at which LSTFN exhibits the minimum polarization resistance (RP) of 0.046 Ωcm2 when sintered at 800 °C for 3 h.
KW - Coating thickness
KW - LaSrTiFeNiO (LSTFN)
KW - Polarization resistance
KW - Sintering-temperature
UR - https://www.scopus.com/pages/publications/85098491916
U2 - 10.1016/j.ceramint.2020.12.209
DO - 10.1016/j.ceramint.2020.12.209
M3 - 文章
AN - SCOPUS:85098491916
SN - 0272-8842
VL - 47
SP - 10893
EP - 10904
JO - Ceramics International
JF - Ceramics International
IS - 8
ER -