Recent Development and Modification of Perovskite-Based CO₂ Electrolysis Solid Oxide Electrolysis Cell Cathode

Area of Science:

• Materials Science
• Electrochemistry
• Chemical Engineering

Background:

• Electrochemical reduction of carbon dioxide (CO2RR) to carbon monoxide (CO) using high-temperature solid oxide electrolysis cells (SOECs) is a key technology for carbon neutrality.
• Current SOEC commercialization is limited by insufficient cathode activity and degradation issues.
• Perovskite-based cathodes are crucial for efficient CO2RR to CO in SOECs.

Purpose of the Study:

• To provide a comprehensive review of perovskite-based cathode materials for CO2RR to CO in SOECs.
• To summarize thermodynamic fundamentals and mechanistic pathways of CO2 conversion on perovskite surfaces.
• To discuss modification strategies, performance influences, and large-scale application prospects.

Main Methods:

• Literature review of perovskite cathode materials and their modification strategies for SOECs.
• Analysis of thermodynamic principles and reaction mechanisms for CO2 reduction.
• Evaluation of electrochemical performance data and influencing factors (temperature, potential, concentration, thickness).

Main Results:

• Overview of various perovskite cathode materials and their performance enhancements through modification.
• Detailed analysis of factors affecting SOEC performance in CO2 electrolysis.
• Discussion of recent advances in large-scale application exploration.

Conclusions:

• Perovskite cathodes are vital for advancing CO2RR to CO in SOECs, but activity and stability challenges remain.
• Strategic material modifications and optimized operating conditions are essential for improved performance.
• Further research is needed to overcome challenges and realize the practical application of SOEC technologies for CO2 utilization.