First-principles thermodynamic assessment of Sr-containing secondary phase formation in strontium-substituted lanthanum manganites for solid oxide cell applications

Key Points

• This research aims to analyze the impact of strontium-containing secondary phases on the performance of solid oxide cells using thermodynamic principles.
• Conducted a first-principles thermodynamic study.
• Focused on La1-xSrxMnO3±δ perovskite materials.
• Analyzed the formation of secondary phases under varying conditions.
• Identified significant degradation modes related to secondary phase formation.
• Showed that strontium affects the stability and performance of solid oxide cells.
• Highlighted thermodynamic conditions leading to increased susceptibility to degradation.