Electrochemical HER characteristics of recently developed electrocatalysts.
| HER catalyst | Overpotential (η) in mV HER (j in mA cm−2; pH) | Tafel slope (pH) | Faraday efficiency HER (pH) | Ref. |
|---|---|---|---|---|
| Pt on glassy carbon | 65 (20; 0) | — | 92 (0) | 1257 |
| Commercial Pt/C | 40 (20; 14) | — | — | 910 |
| 50 (100; 14) | ||||
| 100 (15; 9,5) | ||||
| NiO/Ni CNT on Ni foam | 100 (100; 14) | 51 mV dec−1 (14) | — | 910 |
| NiO/Ni core shell NP on CNT | 100 (10; 14) | 82 mV dec−1 (14) | — | 910 |
| 100 (2.5; 9.5) | ||||
| Ni2P | 100 (10; 0) | 81 mV dec−1 (0) | 100 (0) | 1259 |
| Fe | 360 (10; 13) | 105.2 (13) | 911 | |
| NiSe | 185 (50; 14) | 64 mV dec−1 (14) | 100 (14) | 912 |
| CoP | 110 (10; 0) | 64 mV dec−1 (14) | 1260 | |
| 41 mV dec−1 (0) | ||||
| Co2P | 110 (10; 0) | 52 mV dec−1 (14) | 100 (14) | 1260 |
| 45 mV dec−1 (0) | ||||
| Pt–MoS2 | 35 (10; 0) | 54 mV dec−1 (0) | 913 | |
| NiCo2S2 | 305 (100; 14) | 89 mV dec−1 (14) | 914 | |
| 141 mV dec−1 (14) | ||||
| Modified steel Ni42 | 189 (10; 0) | 198 mV dec−1 (7) | 101.8 (13) | 1237 |
| 268.4 (10; 1) | 72 mV dec−1 (13) | |||
| 333 (10; 13) | 118 mV dec−1 (0) | |||
| 299 (10; 14) | 81 mV dec−1 (1) | |||
| 275 (10; 14.6) (at 343.15 K) | ||||
| Steel Ni42 anode in hematite/H2SO4 suspension | 370 (30; 0) | — | 83.1 (0) | 1328 |
| Steel AISI 434 | 315 (10; 14) | 121 mV dec−1 (14) | — | 1266 |
| Sulphurised steel AISI 316 | 136 (10; 14) | 147 mV dec−1 (14) | 100 (14) | 1262 |
| 280 (50; 14) | ||||
| Steel 316L | 340 (1.3; 4) | — | 91.4 (4) | 1249 |
| N,P-Doped AISI 304 steel mesh | 230 (12; 14) | 36 mV dec−1 (14) | 1263 | |
| N-Doped anodised AISI 304 steel mesh | 146 (10; 14) | 60.1 mV dec−1 (14) | 1264 | |
| Fe3C modified AISI 304 | 290 (10; 14) | 38 mV dec−1 (14) | 98 (14) | 1267 |
| Chem.- + electrochem oxidation | 550 (200; 14) | 90. mV dec−1 (14) | 1271 | |
| AISI 304 | 484 (100; 14) | |||
| NiFe LDH (pristine) on NF | 204 (10; 14) | 78.39 mV dec−1 (14) | 113 | |
| Aged–NiFe LDH on NF | 59 (10; 14) | 62.30 mV dec−1 (14) | 113 |