Department of Mechanical Engineering, Institut Teknologi Nasional Yogyakarta, Daerah Istimewa Yogyakarta 55281, Indonesia
BibTex Citation Data :
@article{JKSA48147, author = {Adi Subardi}, title = {Enhanced SOFC Cathode Performance Through Surface Modification of NdBa0.5Sr0.5Co2O5+δ Nanoparticles}, journal = {Jurnal Kimia Sains dan Aplikasi}, volume = {25}, number = {9}, year = {2022}, keywords = {SOFC; Cathode; Electrical conductivity; Infiltration; Long-term performance stability}, abstract = { The cathode materials fabrication with outstanding performance and stability at intermediate temperatures of 600–800℃ is required for the prospective mass production of solid oxide fuel cells (SOFCs). Infiltration is a potential method because it has proven successful in fabrication and cell performance enhancement. This study mainly focuses on the electrical conductivity and long-term reliability of cathode symmetric cells NdBa 0.5 Sr 0.5 Co 2 O 5+ δ (NBSC) fabricated by traditional solid-state reaction techniques. The electrical conductivity value of the cathode is in the range of 174–278 S.cm -1 . Impedance analysis showed that the infiltration of 0.5M SDC on the NBSC cathode surface dramatically reduced the polarization resistance (Rp) between layers (cathode-electrolyte) from 3.32 Ω.cm 2 to 1.82 Ω.cm 2 at 600℃ or decreased by 45 % compared to NBSC cathode without 0.5M SDC infiltration. The enhanced stability of NBSC cathode specimens with 0.5M SDC infiltration (NBSC+0.5 M SDC) under SOFC operating conditions proves that samples with infiltration extend their lifetime. Compared to the NBSC cathode, the NBSC+0.5 M SDC cathode has better long-term stability with a lower RP value of 2.35 Ω.cm 2 . In the OPP range of 0.214-0.0027 atm at 800℃, the relatively tiny Rp value of the symmetrical cell is between 0.030 Ω.cm 2 and 0.039 Ω.cm 2 , below the 0.15 Ω.cm 2 suitable performance limit for solid oxide fuel cells. }, issn = {2597-9914}, pages = {322--328} doi = {10.14710/jksa.25.9.322-328}, url = {https://ejournal.undip.ac.id/index.php/ksa/article/view/48147} }
Refworks Citation Data :
The cathode materials fabrication with outstanding performance and stability at intermediate temperatures of 600–800℃ is required for the prospective mass production of solid oxide fuel cells (SOFCs). Infiltration is a potential method because it has proven successful in fabrication and cell performance enhancement. This study mainly focuses on the electrical conductivity and long-term reliability of cathode symmetric cells NdBa0.5Sr0.5Co2O5+δ (NBSC) fabricated by traditional solid-state reaction techniques. The electrical conductivity value of the cathode is in the range of 174–278 S.cm-1. Impedance analysis showed that the infiltration of 0.5M SDC on the NBSC cathode surface dramatically reduced the polarization resistance (Rp) between layers (cathode-electrolyte) from 3.32 Ω.cm2 to 1.82 Ω.cm2 at 600℃ or decreased by 45 % compared to NBSC cathode without 0.5M SDC infiltration. The enhanced stability of NBSC cathode specimens with 0.5M SDC infiltration (NBSC+0.5 M SDC) under SOFC operating conditions proves that samples with infiltration extend their lifetime. Compared to the NBSC cathode, the NBSC+0.5 M SDC cathode has better long-term stability with a lower RP value of 2.35 Ω.cm2. In the OPP range of 0.214-0.0027 atm at 800℃, the relatively tiny Rp value of the symmetrical cell is between 0.030 Ω.cm2 and 0.039 Ω.cm2, below the 0.15 Ω.cm2 suitable performance limit for solid oxide fuel cells.
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