Table 2.
Electrocatalytic activity of LiMn2O4–carbon composite electrodes.
| Metric | j | E [V versus RHE][a] | j at 1.68 V versus RHE[a] |
|---|---|---|---|
| disk area | 10 mA cm | 1.749(2) | 2.1(1) mA cm |
| mass | 10 A g−1 | 1.705(3) | 5.3(4) A g−1 |
| oxide area | 100 μA cm | 1.714(3) | 42(3) μA cm−2 ox |
| TOF‐s[b] | – | – | 0.07(1) O2 Mn−1 s−1 |
| TOF‐b[c] | – | – | 0.0025(2) O2 Mn−1 s−1 |
[a] Uncertainties indicate the propagated standard deviation (1σ) of 3 electrodes per pH value. [b] Turnover frequency assuming that all Mn on the oxide surface are active. [c] Turnover frequency assuming that all Mn on the electrode is active; evaluation based on the capacitance‐corrected disk current during the 5th cycle of all investigated pH values; the oxide loading was 50(1) μg with an oxide surface area of 6.1(2) cm2.