Comparative investigation on the functional properties of alkaline earth metal (Ca, Ba, Sr) doped Nd2NiO4+δ oxygen electrode material for SOFC applications

Preparation and Electrochemical Properties of Cathode Materials Ln2–xYxCuO4+δ for Solid Oxide Fuel Cell

“…The polarization phase transition of crystal grain and boundary response is extremely small, and the charge transfer is extremely fast due to the rapid polarization process, so the high frequency cannot be shown in the impedance diagram. 19 As shown in Figure 6 , the impedance spectra of NY x C ( x = 0–0.1) and SY x C ( x = 0–0.1) have two obvious arcs of medium and low frequencies. PY x C ( x = 0–0.1) only exhibits one arc, which is the same as Sadykov, 20 and is only fitted in accordance with an intermediate-frequency reaction process.…”

“…With the increase in the Y 3+ doping amount, the polarization impedance of the PY x C ( x = 0–0.1) cathode material gradually decreases, whereas the polarization impedance of the NY x C ( x = 0–0.1) and SY x C ( x = 0–0.1) cathode materials decreases first and then increases, indicating that doping Y 3+ within a certain range can reduce the polarization impedance of cathode material, and the catalytic activity of the oxygen reduction of cathode materials is improved. The polarization phase transition of crystal grain and boundary response is extremely small, and the charge transfer is extremely fast due to the rapid polarization process, so the high frequency cannot be shown in the impedance diagram . As shown in Figure , the impedance spectra of NY x C ( x = 0–0.1) and SY x C ( x = 0–0.1) have two obvious arcs of medium and low frequencies.…”

Characterization of Pr0.5A0.5Fe0.9W0.1O3−δ (A = Ca, Sr and Ba) as symmetric electrodes for solid oxide fuel cells

“…26 Ca-doped Nd 1.7 Ca 0.3 NiO 4+ δ shows the lowest polarization resistance and activation energy among the Nd 1.7 A 0.3 NiO 4+ δ (A = Ca, Sr and Ba) cathode compositions. 27 The proton conductivities of BaLa 0.9 M 0.1 InO 3.95 increase from Ca to Sr and Ba. 28…”

“…26 Ca-doped Nd 1.7 Ca 0.3 NiO 4+d shows the lowest polarization resistance and activation energy among the Nd 1.7 -A 0.3 NiO 4+d (A ¼ Ca, Sr and Ba) cathode compositions. 27 The proton conductivities of BaLa 0.9 M 0.1 InO 3.95 increase from Ca to Sr and Ba. 28 Up to now, the electrochemical performance of praseodymium ferrite single perovskite oxides as symmetric electrodes for SSOFCs/SSOECs has been extensively investigated.…”

Novel Perovskite Structured Nd0.5Ba0.5Co1/3Ni1/3Mn1/3O3−δ as Highly Efficient Catalyst for Oxygen Electrode in Solid Oxide Electrochemical Cells

“…A number of perovskite materials have been investigated as potential candidates for applications of OER/ORR. , Perovskite ABO 3 oxides, consisting of the larger A-site cations and smaller B-site cations, possess large compatibility for the mismatches of the ionic radius sizes between A and B-site cations. − As most of the B-site ions are transition metal ions (Co, Ni, Fe), the large number of enriched ions could provide a strong catalytic performance and hence enhance ORR kinetic processes. La 0.8 Sr 0.2 MnO 3 (LSM) is the most widely studied single perovskite material for ORR .…”