Fig. 6: Synergistic mechanism of the organic-inorganic dual dopants.
From: Microbial-vulcanized organic-inorganic dual-modulated cobalt hydroxide for oxygen evolution reaction
Optimal conformations of a Co(OH)2 and, b MV-S/Co(OH)2/MI for key intermediates in the reaction pathways of OPM (green arrow) and AEM (blue arrow). c Comparisons of the energy barriers at the OPM pathway for the catalysts. d Quantitative relation between ΔGO*−O* and the d-band center of Co in different catalysts. The area of the circle represents the current density of different catalysts at an overpotential of 0.3 V. e Electron density difference fields for the S doped, MI doped, and S, MI co-doped Co(OH)2. The yellow and blue regions indicate electron depletion and accumulation, respectively, isovalue = 0.04. f The interatomic Co−Co distances in Co(OH)2 (I), MV-Co(OH)2/MI (II), MV-S/Co(OH)2 (III), and MV-S/Co(OH)2/MI (IV). Color codes: dark blue, Co; pink, O; yellow, S; gray, C; green, N; white, H. Source data are provided as a Source Data file.
