Fig. 7: Free energy diagrams for pH-dependent and potential-dependent.
From: Synergy of dual-atom catalysts deviated from the scaling relationship for oxygen evolution reaction

Variation of Gibbs free energy with potential for a NiPd@NC, b CuPd@NC, and c CuPt@NC at pH = 1. Variation of Gibbs free energy with potential for d NiPd@NC, e CuPd@NC, and f CuPt@NC at pH = 13. Free energy diagrams of g NiPd@NC, h CuPd@NC, and i CuPt@NC at different potentials with pH = 1 and 13, and the corresponding ΔG*OH-*O→*O2 are labeled.