Figure 1 (IMAGE)
Caption
Summary of Sn-based catalysts for CO2RR: (a) the category of Sn-based catalysts for CO2RR dominated by Sn oxides-based materials (SnOx), which account for approximately 65% of the total; (b) advantages of SnOx compared to other Sn-based materials including high C1 selectivity, the easily tuned morphology, low cost, and simpler synthesis process; (c) the uncovered structure-activity relationship of SnO2-based materials, i.e., (i) the surface-active configurations, (ii) the Gibbs free energy evolutions toward CO and HCOOH, and (iii) the delivered optimal CO2RR performance in experiments; (d) the pivotal but unresolved questions in SnO-catalyzed CO2RR that warrant further investigation, including the surface coverages, surface-active sites, the effects of applied potentials on CO2RR intermediates, and reaction mechanisms of C1 distribution. All literature data including the optimal potentials, CO2RR performance, and the corresponding references were extracted via a large-scale data mining from the experimental CO2RR literature published during the past decade, which can be found in Table S1 and are also available in the DigCat database: https://www.digcat.org/.
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©Hao Li
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