Citation: | Dawei Wang, Fangxu Lin, Shaojun Guo. Operando-captured O-529 eV signal: an indicator of active phase formation below OER potential[J]. Energy Lab, 2024, 2(3): 240021. doi: 10.54227/elab.20240021 |
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a Comparison of the TFY intensity at the maximum of the pre-edge feature (528.7 eV) as a function of the applied potential during CV, with its first derivative and the corresponding CV for NiFe LDH. b Comparison of the TFY signal at 528.7 eV and at 856.2 eV for NiFe LDH. The measurements were conducted in 0.1 M KOH at room temperature. c Average O K-edge (normalized) of all oxygen atoms at the hollow sites of α- and γ-phases, with the combination of various α/(α+γ) ratios of 0.1, 0.3, 0.5, 0.7 and 0.9. d Polarization curves of CCM-based AEMWE single cells with 1.0±0.2 mgNiFe-LDH cm−2 and 0.5±0.1 mgPt cm−2 in 1 M KOH. The magenta line represents the state-of-art PEMWE polarization [8]. Shaded areas show 95% confidence intervals (n=3; individual cells). Dashed lines denote high frequency resistance (HFR)-corrected curves.