Fig. 4: Electrocatalytic CO2-to-CO test. | Nature Communications

Fig. 4: Electrocatalytic CO2-to-CO test.

From: Atomically precise Ni clusters inducing active NiN2 sites with uniform-large vacancies towards efficient CO2-to-CO conversion

Fig. 4: Electrocatalytic CO2-to-CO test.The alternative text for this image may have been generated using AI.

a The FE values of CO for NiN2-Nin (n = 5, 6, 10) and various Ni-based reference catalysts in 0.5 M KHCO3 with H-type Cell, b The FE values of CO for NiN2-Nin in 1 M KOH in flow cell (1 cm2 GDE). c Comparison of work potential window with other reported catalysts for high FEco in flow cell. d Linear sweep voltammetry (LSV) curves, e FE values of CO and f CO2 conversions for 1 mg NiN2-Nin (1.5 mg for NiN2-Ni10) on 5 cm2 GDE in 1 M KOH in flow cell. g Comparison of apparent TOFs of CO generation with other reported Ni catalysts tested in flow cell in 1.0 M KOH. h Time-dependent FEs and potential of NiN2-Nin during constant current electrolysis at 100 mA. The points marked by arrows in the (h) represent the refreshing. Note: The details and related references for (c, g) are listed in the Supplementary Table S3. All experimental potentials were not iR corrected. Source data for Fig. 4 are provided as a Source Data file.

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