Life cycle analyses of SOFC/gas turbine hybrid power plants accounting for long-term degradation effects

Lai, Haoxiang; Adams, Thomas A.

doi:10.1016/j.jclepro.2023.137411

Cited by 12 publications

(1 citation statement)

References 29 publications

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“…Simple solid oxides have attracted much attention due to their diverse physical and chemical properties [ 1 , 2 , 3 ]. Complex oxides have found numerous applications in high-temperature electrochemical devices for power-to-gas or gas-to-power systems [ 4 , 5 , 6 , 7 ]. If the complex oxide has high ionic conductivity, it can be used as an ion-conducting membrane in high-temperature devices [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Sintering Aid Strategy for Promoting Oxygen Reduction Reaction on High-Performance Double-Layer LaNi0.6Fe0.4O3–δ Composite Electrode for Devices Based on Solid-State Membranes

Осинкин

Богданович

2023

Membranes

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Strontium and cobalt-free LaNi0.6Fe0.4O3–δ is considered one of the most promising electrodes for solid-state electrochemical devices. LaNi0.6Fe0.4O3–δ has high electrical conductivity, a suitable thermal expansion coefficient, satisfactory tolerance to chromium poisoning, and chemical compatibility with zirconia-based electrolytes. The disadvantage of LaNi0.6Fe0.4O3–δ is its low oxygen-ion conductivity. In order to increase the oxygen-ion conductivity, a complex oxide based on a doped ceria is added to the LaNi0.6Fe0.4O3–δ. However, this leads to a decrease in the conductivity of the electrode. In this case, a two-layer electrode with a functional composite layer and a collector layer with the addition of sintering additives should be used. In this study, the effect of sintering additives (Bi0.75Y0.25O2–δ and CuO) in the collector layer on the performance of LaNi0.6Fe0.4O3–δ-based highly active electrodes in contact with the most common solid-state membranes (Zr0.84Sc0.16O2–δ, Ce0.8Sm0.2O2–δ, La0.85Sr0.15Ga0.85Mg0.15O3–δ, La10(SiO4)6O3–δ, and BaCe0.89Gd0.1Cu0.01O3–δ) was investigated. It was shown that LaNi0.6Fe0.4O3–δ has good chemical compatibility with the abovementioned membranes. The best electrochemical activity (polarization resistance about 0.02 Ohm cm2 at 800 °C) was obtained for the electrode with 5 wt.% Bi0.75Y0.25O1.5 and 2 wt.% CuO in the collector layer.

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