Transforming active sites in nickel–nitrogen–carbon catalysts for efficient electrochemical CO2 reduction to CO

Recent development of nanomaterials for carbon dioxide electroreduction

“…For example, Co‐SAC coordinated with four nitrogen is an effective catalyst for HER, 44 but its molecular analogs such as cobalt porphyrin (CoP) and cobalt phthalocyanine (CoPc) are highly active in CO 2 ‐to‐CO electroreduction 45,46 . Table 1 shows the performance of some examples of SACs for CO 2 RR, such as Fe‐, 47–49,65–71 Co‐, 52,53,72,73 Ni‐, 74–87 Cu‐, 20,62,88–90 Zn‐, 58,59,91 and Sn‐based 60,61 ones 50,51,54–57,63,64 . Most of these SACs produced CO.…”

Atomically Structural Regulations of Carbon‐Based Single‐Atom Catalysts for Electrochemical CO2Reduction

“…Daiyan et al first performed DFT to understand the role of possible NiN x and NiC 4 coordination structures on CO 2 RR. [101] They carried out the Gibbs free energy calculations of CO 2 RR and competing HER on the different moieties (NiN 4 , NiN 3 , NiN 2 V 2 , NiC 4 ). These theoretical results indicated that Ni SACs could achieve better CO 2 RR activity with a decrease in NiN x coordination number and NiC 4 obtains the lowest overpotential for CO 2 RR.…”

Hydroxy‐Group‐Functionalized Single Crystal of Copper(II)‐Porphyrin Complex for Electroreduction CO2 to CH4

“…In recent years, atomically dispersed transition metals embedded in nitrogen‐doped carbon matrices (M−N−C) catalysts have been widely examined as competitive candidates for the CO 2 RR [5–9] . However, such M−N−C catalysts are usually synthesized by pyrolysis with high temperature, which makes it difficult to accurately control the structures of the active sites and further improve performance [10] .…”

“…In recent years, atomically dispersed transition metals embedded in nitrogen-doped carbon matrices (MÀ NÀ C) catalysts have been widely examined as competitive candidates for the CO 2 RR. [5][6][7][8][9] However, such MÀ NÀ C catalysts are usually synthesized by pyrolysis with high temperature, which makes it difficult to accurately control the structures of the active sites and further improve performance. [10] Metal-organic coordina-tion complexes possess well-defined structures that can easily be tailored at a molecular level, [10][11][12][13][14][15] which have great value for scientific research and practical application in the field of electrocatalytic CO 2 reduction.…”