Table 1.
OER performance comparison between the samples synthesized in this work
| Samples | Over potential (mV) @10 mA cm−2 | Tafel slope (mV dec−1) | Rct (Ω) | Mass activity (A g−1) @310 mV | TOF (s−1) @310 mV |
|---|---|---|---|---|---|
| 2.27 nm La2O3@NP-NS | 310 | 43.1 | 38 | 6666.7 | 5.79 |
| 8.68 nm La2O3@NP-NS | 343 | 64.8 | 57 | 713 | 0.88 |
| 28.26 nm La2O3 | 429 | 125.7 | 143 | 51 | 0.055 |
| ILE synthesized La2O3 NPs | 580 | 157.7 | 272 | 17.4 | 0.012 |
| Commercial IrO2 powder | 343 | 70.4 | 25.4 | 4.4 | 0.0026 |
| Commercial RuO2 powder | 408 | 140.6 | 89.6 | 2.05 | 7.23 × 10−4 |
| Commercial La2O3 powder | 1330 | 743.1 | 47,598 | 0.048 | 4.87 × 10−5 |