Metal–organic framework-derived Co₉S₈ embedded in N, O and S-tridoped carbon nanomaterials as an efficient oxygen bifunctional electrocatalyst

Abstract

Designing a tailor-made MOF to prepare Co9S8 embedded in N, O and S-tridoped carbon nanomaterials, which has a highly efficient electrocatalytic oxygen reaction activity.

Metallic Co9S8 Coupled Hollow N‐Doped Carbon Sphere with Synergistic Interface Structure for Efficient Electricity Generation in Microbial Fuel Cells

“…Since the ratio of peak area at 778.4 and 781.3 eV was determined about 0.044 instead of 0.125 (calculated from Table S1), the deconvoluted peak at 778.4 eV should be assigned to Co–Co bond, which was responsible for the metallic character of Co 9 S 8 owing to the bonding states occupying at the Fermi level, while the rest deconvoluted peaks at 781.3 and 796.8 eV were attributed to Co−S bonds. The S 2p spectrum (Figure b) with the doublets at 161.3 and 162.4 eV correspond to the 2p 3/2 and 2p 1/2 core levels of S atoms in Co 9 S 8 , and the peaks at 163.7 and 164.8 eV belong to C−S−C bonds, indicating that the real synergistic interface structure between Co 9 S 8 and HNCS. The residual peak of S 2p could contribute to SO x n− that might result from the thimbleful oxides on the surface of Co 9 S 8 /NHCS in contact with air or oxygen adsorbed on the surface as deviation from nitrogen atmosphere .…”

Single‐Atom and Dual‐Atom Electrocatalysts Derived from Metal Organic Frameworks: Current Progress and Perspectives

“…Besides Fe atoms, Co also exhibited high ORR performance as indicated by Co based non-single atom catalysts. [74][75][76][77] Therefore, Co-based SACs were also developed to further improve the utilization rate of Co atoms and their catalytic activity. The single Co atoms derived from MOFs for ORR was firstly examined by Li and co-workers.…”

Metal–organic framework based bifunctional oxygen electrocatalysts for rechargeable zinc–air batteries: current progress and prospects

“…In another study, Zang et al designed a dual-ligand 2D Co-MOF precursor with N, S and O-containing ligands to prepare N, O, and S-doped tri-doped carbon (TDC). 118 Meanwhile, the Co element in the MOFs is transformed into Co 9 S 8 (Fig. 9A).…”