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Related Experiment Video

Updated: Jan 11, 2026

Protocol of Electrochemical Test and Characterization of Aprotic Li-O2 Battery
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Unlocking the Orbital Interaction Mode in Li-O2 Batteries.

Yicheng Zeng1, Yin Zhou2, Fangze Liu3

  • 1Experimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China.

Angewandte Chemie (International Ed. in English)
|November 13, 2025
PubMed
Summary

Designing lithium-oxygen batteries requires understanding electrocatalyst-intermediate orbital interactions in oxygen evolution reactions (OER). A CdSe/ZnS heterojunction catalyst enhances OER activity by modifying orbital interactions, reducing activation energy.

Keywords:
CdSe/ZnS heterojunctionElectrocatalyst‐intermediate interactionLithium–oxygen batteriesOrbital electronic statesOxygen evolution reactions

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Quantum Chemistry

Background:

  • Optimizing oxygen evolution reactions (OER) in lithium-oxygen (Li-O2) batteries hinges on understanding electrocatalyst-intermediate orbital interactions.
  • This interaction is crucial for designing high-performance Li-O2 batteries but remains a complex challenge.

Purpose of the Study:

  • To investigate the catalyst-intermediate interaction and its impact on OER activity using a CdSe-based catalyst as a model.
  • To elucidate how orbital electronic states influence OER performance in Li-O2 batteries.

Main Methods:

  • Utilized a CdSe-based catalyst and a CdSe/ZnS heterojunction for OER studies.
  • Analyzed the electronic states of Cadmium (Cd) 4d orbitals and their interaction with the LiO2 intermediate.
  • Investigated the orbital interaction modes (e.g., Cd 4dxy-O 2Px/y and Cd 4dz2-O 2Py) and their effect on activation energy.

Main Results:

  • Electron transfer in the CdSe/ZnS heterojunction shifted Cd 4d suborbital energy levels downward compared to CdSe.
  • Distinct orbital interaction modes between the catalysts and the LiO2 intermediate were observed.
  • A weaker orbital interaction mode (Cd 4dz2-O 2Py) in CdSe/ZnS significantly reduced the activation energy for the rate-determining step, enhancing OER activity.

Conclusions:

  • The orbital electronic states of electrocatalysts critically influence OER activity in Li-O2 batteries.
  • Modulating orbital interactions, as demonstrated with the CdSe/ZnS heterojunction, offers a viable strategy for enhancing OER performance.
  • This study provides theoretical insights for designing advanced OER electrocatalysts for next-generation Li-O2 batteries.