Asymmetrically coupled Co Single-atom and Co nanoparticle in Double-shelled Carbon-based nanoreactor for enhanced reversible oxygen catalysis

Atomic-level orbital coupling in a tri-metal alloy site enables highly efficient reversible oxygen electrocatalysis

“…Beyond that, the remaining sub-peak of the M-N structure is easily identied at 399.5 eV, further con-rming the formation of the metal-N bond. 57 Note that the expected metal-N sites are the highly active sites for the ORR; the pyridinic-N, pyrrolic-N, and graphitic-N are conducive to enhancing the conductivity of the carbon framework. 58 As a result, the diversity of N-doping collectively contributes to outstanding electrochemical performances.…”

Electrocatalysts for the oxygen evolution reaction: mechanism, innovative strategies, and beyond

“…The size of the catalysts is significant in multiphase catalysis, and as nanomaterials are reduced to singleatom size, they develop unique electronic and spatial structures that can significantly enhance their catalytic activity. [107][108][109][110][111][112] Singleatom catalysts are receiving increasing attention due to their high atom utilization efficiency and unique selectivity. [113][114][115] As early as the 1990s, studies related to single-dot atomic catalysts, such as the growth of large concentrations and regularly spaced singledot metal complexes on silica inner walls with large-diameter pores.…”

Understanding the mechanism and synergistic interaction of cobalt-based electrocatalysts containing nitrogen-doped carbon for 4 e− ORR

“…The catalyst also revealed the optimum binding strength on the volcano plot. 134 Although the bimetallic sites in nitrogen-doped carbon increase the selectivity and stability of the catalyst, their synthesis is still a challenging task due to metal aggregation and formation of bimetallic alloys. Recent research on metal nanoparticles incorporated in metal single-atom catalysts also demonstrated their pronounced activity and stability in PEMFCs and metal-air batteries.…”