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

ABSTRACT: CO₂ electroreduction to CO promises to give an efficient strategy for CO₂ fixation and transformation. However, current reported active sites fail to deliver sufficient activity with high CO Faradic efficiency (FEco) over a wide range of potential. Here, we show a general synthetic protocol to fabricate a batch of highly pure and active NiN₂ catalysts with precise engineering of the uniform-large (UL) vacancy around the active sites, which is accomplished through the 'pre-deposition + pyrolysis' of various atomically precise Ni clusters (Ni_n) and in-situ etching of the support by the 'nano bomb' (sulfur-ligand in the clusters). The NiN₂ sites with UL vacancies could achieve a high turnover frequency (TOF) of 350000 h^-1 with

SUBMITTER: Xu G 

PROVIDER: S-EPMC12015452 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature