As known, finding suitable descriptors to describe the chose conformation and exploring the correlation between these descriptors and adsorption free energies of every intermediate is an effective method to develop high performance electrocatalysts. To gain insights into the catalytic activity of TMP4 catalysts, the correlations between adsorption free energies of each intermediate containing oxygen were studied. As shown in Figure , the linear relationship is existing between the adsorption free energies of *OH (∆𝐺 𝑂𝐻 * ), *O (∆𝐺 𝑂 * ) and *OOH (∆𝐺 𝑂𝑂𝐻 * ) with ∆𝐺 𝑂𝐻 * , detailly, ∆𝐺 𝑂 * and ∆𝐺 𝑂𝑂𝐻 * would be expressed via equations of ∆GO*=1.36∆GOH*+1.18, ∆GOOH*=0.9∆GOH*+3.25, respectively, revealing a strong correlation between ∆𝐺 𝑂 * and ∆𝐺 𝑂𝑂𝐻 * .