Table 3 Comparison of catalyst surface area with diffusion limited current density
Active site | Synthetic method | Specific surface area (m2 g−1) | Pore volume (cm3 g−1)/pore size (nm) | Catalyst loading on RDE (mg cm−2) | Diffusion limited current density at 1600 rpm (mA cm−2) | Current onset potential (V vs. RHE) | Refs. |
|---|---|---|---|---|---|---|---|
Fe/N doped carbon nano rods (Fe–N4) | Rod-shaped 1D Fe2O3 as self-template | 666.7 | 1.3 cm3.g−1 | 0.4 | 5.5 | 1.1 | |
Fe–N–C | NaCl used as pore former | 411 | 0.3–10 nm | 0.8 | 5.6 | 0.95 | |
Fe–N–C | ZIF-8 as self-template and silica spheres as hard template | 639.4 | 1–5 nm | 0.36 | 6.67 | 1.02 | |
Fe–N–C | MgO nanoparticles and NaCl crystals as hard templates | 1247 | 1.34 cm3 g−1, 11.29 nm average pore diameter | 0.4 | 4.9 | 0.96 |
