High-Efficiency CO2 Electroreduction Catalyst Synthesis and Characterization

Researchers synthesized a novel MxNi1−x@SDC catalyst for highly efficient CO2 electroreduction using a sol-gel method. The catalyst was prepared by mixing different metal salts with citric acid and ethylene glycol, followed by high-temperature treatment. Co0.5Ni0.5-SDC and LSCF materials were also synthesized, and an electrolytic cell was constructed. The performance and structure of the catalyst were investigated using electrochemical measurements, various characterization techniques (including XRD, SEM, TEM, XPS, XAS, and Raman spectroscopy), and DFT simulations, revealing the mechanism behind its efficient CO2 electroreduction.