Metal

Adsorption

Intercalation (chemistry)

Electrochemistry

Metallurgy

Materials science

Center (category theory)

Inorganic chemistry

Zinc

Physical chemistry

Organic chemistry

Oxygen

Aqueous solution

Desorption

Crystallography

Chemistry

Electrode

Angewandte Chemie International Edition

In aqueous zinc ion batteries (ZIBs), the H+ intercalation possesses superior electrochemical kinetics with excellent rate capability, however, precisely modulating H+ intercalation has been still challenging. Herein, a critical modification of pre-intercalating metal ions in the MnO2 interlayer (M-MnO2 ) with controllable p-band center (ϵp ) of O is reported to modulate the H+ intercalation. The modulation of metal-O bond type and covalency degree on the average charge of O atom results in optimized ϵp and H+ adsorption energy for M-MnO2 , thus promoting the balance between H+ adsorption and desorption, which plays a determinant role on H+ intercalation. The optimized Cu-MnO2 delivers superior rate capability with the capacity of 153 mAh g-1 at a high rate of 3 A g-1 after 1000 cycles. This work demonstrates that ϵp could be a significant descriptor for H+ intercalation, and tuning ϵp effectively increases H+ intercalation contribution with excellent rate capability in ZIBs.

Engineering p‐Band Center of Oxygen Boosting H<sup>+</sup> Intercalation in δ‐MnO<sub>2</sub> for Aqueous Zinc Ion Batteries

Engineering p‐Band Center of Oxygen Boosting H+ Intercalation in δ‐MnO2 for Aqueous Zinc Ion Batteries

Engineering p‐Band Center of Oxygen Boosting H⁺ Intercalation in δ‐MnO₂ for Aqueous Zinc Ion Batteries