| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 186817 | Electrochimica Acta | 2013 | 8 Pages |
•Synthesis of novel sulfur-doped ordered mesoporous carbon (OMC-S).•OMC-S as metal-free electrocatalyst for ORR.•High electrocatalytic activity and excellent tolerance to crossover effect.•Sulfide groups (CSC) playing an important role in promoting ORR.
Sulfur-doped ordered mesoporous carbons (OMC-S-X) (X = 1, 2 and 3) with different sulfur contents were synthesized as metal-free electrocatalyst for oxygen reduction reaction (ORR). Transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray spectra (EDX), nitrogen adsorption–desorption, X-ray diffraction (XRD) and X-ray photoelectron spectra (XPS) were employed to confirm the characterizations of OMC and OMC-S. The prepared OMC-S-3 exhibits high electrocatalytic activity, good stability and excellent tolerance to crossover effect for ORR. The high electrocatalytic activity of OMC-S-3 for ORR can be mainly ascribed to the doping of sulfur especially the existence of sulfide groups (CSC) which play an important role in promoting the ORR.
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