1T/1H-SnS<sub>2</sub> Sheets for Electrochemical CO<sub>2</sub> Reduction to Formate.
basic_science · Level V
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- Record sourced from PubMed, PMID 37272845.
- Also identified by DOI 10.1021/acsnano.2c12627.
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Abstract
Understanding the catalytic mechanism of highly active two-dimensional electrocatalysts is crucial to their rational design. Herein, we reveal the element dependence of the reactivity of two-dimensional metal dichalcogenide sheets for electrocatalytic CO<sub>2</sub> reduction. We found that tin(IV) disulfide (SnS<sub>2</sub>) and molybdenum(IV) disulfide (MoS<sub>2</sub>) sheets exhibited Faradaic efficiencies of 63.3% and ∼0%, respectively, for formic acid. Scanning electrochemical cell microscopy and theoretical calculations were used to identify the catalytically active sites of SnS<sub>2</sub> as terraces and edges. Owing to the effective utilization of the entire surface area, SnS<sub>2</sub> can effectively accelerate catalytic reactions. This finding provides a direction for material research in two-dimensional electrocatalysts for energy-efficient chemical production from electrochemical CO<sub>2</sub> reduction, as well as for other energy devices.