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Synthesis and Electrochemical Studies of Novel Cobalt Free (Nd<sub>0.9</sub>La<sub>0.1</sub>)<sub>1.6</sub>Sr<sub>0.4</sub> Ni<sub>0.75</sub>Cu<sub>0.25</sub>O<sub>3.8</sub> (NLSNC4) Cathode Material for IT‐SOFCs
16
Citations
38
References
2019
Year
EngineeringElectrode-electrolyte InterfaceSdc ElectrolyteChemistryChemical EngineeringCathode MaterialMaterials ScienceInorganic ChemistryBattery Electrode MaterialsAdvanced Electrode MaterialEnergy StorageCatalysisElectrochemical ProcessPure Nlsnc4 CathodeElectrochemistryOxygen Reduction ReactionSingle Phase Nlsnc4Cathode MaterialsElectrochemical Energy StorageBatteriesElectrochemical StudiesNovel Cobalt Free
Abstract A novel cathode material of (Nd 0.9 La 0.1 ) 1.6 Sr 0.4 Ni 0.75 Cu 0.25 O 3.8 (NLSNC4), is synthesized by solid state reaction and is further investigated in combination with samarium doped ceria (SDC) as composite cathodes including 0, 10, 30, 50, and 70 of SDC electrolyte phase. The X‐ray diffraction analysis showed that NLSNC4 was produced in pure phase and was chemically compatible with SDC electrolyte. Electrical conductivities of single phase and composite cathode materials along with their electrochemical performances on SDC electrolytes in symmetric cells were measured by DC four‐probe method and electrochemical impedance spectroscopy (EIS), respectively. Results indicated that the maximum electrical conductivity is 135.56 S cm −1 at 350 °C, measured for single phase NLSNC4, sintered at 1,300 °C. Polarization resistance of pure NLSNC4 cathode was 2.71 Ω cm 2 at 800 °C, and NLSNC4‐x wt.% SDC composite cathodes displayed R p value of 0.35, 0.14, 0.12, and 0.32 Ω cm 2 at 800 °C, for x = 10, 30, 50, and 70, respectively.
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