Sonodynamic-enhanced programming of semi-metallic networks to trigger spin state renormalization for efficient acidic...

The specific atom array can effectively improve the oxygen evolution reaction (OER) performance in acid, but often limited by the uncontrollable synthesis details. Herein, we suggest an innovative sonodynamic-enhanced strategy to breakthrough the traditional nano-constructing limits, two kinds of Ru/Er units can be intentionally programmed onto the acid-stable α-MnO₂ substrate to construct the fantastic semi-metallic networks, in which the generated radicals and the electron-phonon coupling effects under the extreme cavitation condition make the active sites programming become easier. The spatial symmetry is broken in this configurational-differentiated network, which can renormalize the spin-related electronic occupations and tend to the high-spin state from the low-spin state. Then, the spintronic wave functions of active sites and reactants are overlapped appropriately to construct the compact inner Helmholtz plane, in which the stronger interfacial polarization induced by the orderly adsorbates population lead to the faster charge transfer and reactants evolution. Resultly, the spin-related OER kinetic is accelerated, which displays a high current density of 1.0 a cm^-2 at 1.77 V and 200 h of stability in a proton exchange membrane water electrolyzer. This work provides a new insight for designing the new spintro-catalysts with the magical units coupling.