Activating and Stabilizing Lattice Oxygen in Cobalt Oxyhydroxide for Efficient Water Oxidation
Activating and Stabilizing Lattice Oxygen in Cobalt Oxyhydroxide for Efficient Water Oxidation
研究概述
研究内容请参见论文原文。
谱图与表征信息
Figure 2. Electronic environment investigation of VAl-CoOOH. (a) Co K-edge XANES spectra and (b) calculated Co oxidation states for VAl- CoOOH, CoOOH, Co3O4, and Co foil. (c) Co 2p XPS spectra of VAl-CoOOH and CoOOH. (d) FT-EXAFS of VAl-CoOOH, CoOOH, and Co foil. (e,f) Wavelet transform of Co K-edge EXAFS data for (e) CoOOH and (f) VAl-CoOOH.
Figure 5. Mechanistic insights into interfacial electric double layer structure and catalytic stability. (a,b) in situ ATR-SEIRAS spectra of (a) VAl- CoOOH and (b) CoOOH at different applied voltages in the 1.0 M KOH electrolyte; (c) K·H2O proportion in EDLs for VAl-CoOOH and CoOOH; (d) in situ XANES spectra of VAl-CoOOH at different applied potentials in 1.0 M KOH. (e) In situ Raman spectra of VAl-CoOOH at different applied potentials in 1.0 M KOH. (f) Schematic illustration of the interfacial environments of the CoOOH surface and VAl-CoOOH surface. (g) Schematic illustration of simplified OER mechanism modulation: activating and stabilizing lattice oxygen.