Facile Synthesis of CuxS Electrocatalysts for CO2 Conversion into Formate and Study of Relations Between Cu and S with the Selectivity DOI Creative Commons
Sasho Stojkovikj, Gumaa A. El‐Nagar, Siddharth Gupta

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 25, 2024

Abstract The conversion of CO 2 into formate (HCOO − ), a techno‐economically feasible product, can be achieved using earth‐abundant Cu x S electrocatalysts, but questions remain regarding how catalyst structure, composition, and reaction environment influence product selectivity. A novel synthesis method based on electrodeposition foam its subsequent sulfidation via immersion in sulfur saturated toluene solution resulted foams. Catalytic activity studies found that HCOO selectivity is dependent electrochemical activation at higher overpotentials. To understand the effects activation, determine active forms catalysts, identify role sulfur, electrodes are carefully characterized as well gaseous dissolved electrolyte. This included study intentional addition species, identification loss, determination electrode composition relating speciation to observed It residual stabilizes + during electrolysis potentials favoring production, contrast pristine undergoes complete reduction shows poor Sulfur both electrolyte dynamic nature, surface residues SO 4 2− species identified all activated catalysts which correspond with enhanced production.

Language: Английский

Facile Synthesis of CuxS Electrocatalysts for CO2 Conversion into Formate and Study of Relations Between Cu and S with the Selectivity DOI Creative Commons
Sasho Stojkovikj, Gumaa A. El‐Nagar, Siddharth Gupta

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 25, 2024

Abstract The conversion of CO 2 into formate (HCOO − ), a techno‐economically feasible product, can be achieved using earth‐abundant Cu x S electrocatalysts, but questions remain regarding how catalyst structure, composition, and reaction environment influence product selectivity. A novel synthesis method based on electrodeposition foam its subsequent sulfidation via immersion in sulfur saturated toluene solution resulted foams. Catalytic activity studies found that HCOO selectivity is dependent electrochemical activation at higher overpotentials. To understand the effects activation, determine active forms catalysts, identify role sulfur, electrodes are carefully characterized as well gaseous dissolved electrolyte. This included study intentional addition species, identification loss, determination electrode composition relating speciation to observed It residual stabilizes + during electrolysis potentials favoring production, contrast pristine undergoes complete reduction shows poor Sulfur both electrolyte dynamic nature, surface residues SO 4 2− species identified all activated catalysts which correspond with enhanced production.

Language: Английский

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