Covalent Organic Framework (COF) Derived Ni-N-C Catalysts for Electrochemical CO₂ Reduction: Unraveling Fundamental Kinetic and Structural Parameters of the Active Sites.

ABSTRACT: Electrochemical CO₂ reduction is a potential approach to convert CO₂ into valuable chemicals using electricity as feedstock. Abundant and affordable catalyst materials are needed to upscale this process in a sustainable manner. Nickel-nitrogen-doped carbon (Ni-N-C) is an efficient catalyst for CO₂ reduction to CO, and the single-site Ni-N_x motif is believed to be the active site. However, critical metrics for its catalytic activity, such as active site density and intrinsic turnover frequency, so far lack systematic discussion. In this work, we prepared a set of covalent organic framework (COF)-derived Ni-N-C catalysts, for which the Ni-N_x content could be adjusted by the pyrolysis temperature. The combination of high-angle annular dar

SUBMITTER: Li C 

PROVIDER: S-EPMC9306911 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature