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Updated: May 3, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
In Situ Exsolved Bimetallic Nanoparticles on Double Perovskite for Efficient CO2 Electrolysis and Synergistic Methane
Xiaoyu Wang1, Yangyang Zhao1, Juntao Feng1
1School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
Abstract:
Solid oxide electrolysis cells (SOECs) are promising energy conversion devices for the CO2 reduction reaction (CO2RR). However, their applications are limited by sluggish reaction kinetics and poor durability of the electrode. Herein, a hetero-structured (PrBa)0.95Fe1.5Cu0.5O6-δ with in situ formed FeCu bimetallic nanoparticles (FeCu@PB95FC) is designed to enhance CO2 electrolysis and CH4 reforming in SOECs. The current density of the cell with FeCu@PB95FC cathode achieves a remarkable current density of 1044.74 mA cm-2 at 800 °C and 1.5 V for pure CO2 electrolysis, with a CO production rate of 6.4 mL min-1 cm-2 and a Faraday efficiency of 95.23%. The superior electrocatalytic activity is attributed to the exsolved nanoparticles promoting electron transfer and additional oxygen vacancies generated within the perovskite substrate, providing numerous metal-oxide interfaces for gas adsorption and electrolysis. Furthermore, to reduce energy consumption of CO2 electrolysis while generating value-added products, the symmetrical cell (FeCu@PB95FC|LSGM|FeCu@PB95FC) is synthesized, achieving a current density of 1.54 A cm-2, alongside high syngas production (CO: 4.49 mL min-1 cm-2; H₂: 6.53 mL min-1 cm-2). This work offers a synergistic strategy for designing robust electrodes for efficient CO2 conversion and methane utilization in SOECs, advancing sustainable energy technologies.
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