@article{Wang2025, 
author = {Haiyan Wang and Zefeng Teng and Chenxi Liu and Xu Liu and Rui Zhang and Jingqi Chi and Yuhang Zhang and Junfeng Qin and Guiru Sun and Zexing Wu and Xiaobin Liu and Lei Wang},
title = {Tailoring efficient and chlorine-resistant oxygen reduction electrocatalyst based on 4f-2p-5d gradient orbital coupling},
year = {2025},
journal = {Nano Research},
volume = {18},
number = {9},
pages = {94907669},
keywords = {oxygen reduction reaction, Er2O3, seawater battery, chlorine-resistant},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94907669},
doi = {10.26599/NR.2025.94907669},
abstract = {The development of efficient oxygen reduction reaction (ORR) electrocatalysts that utilize seawater as an electrolyte is crucial for harnessing marine resources and advancing the application of zinc-air batteries (ZABs). Here, Er2O3-Pt electrocatalysts enriched oxygen vacancies were constructed by a one-step microwave method. Theoretical calculations indicate that the unique 4f orbitals of Er, in conjunction with the Pt 5d and O 2p orbitals, allow the 4f electrons to demonstrate a degree of mobility. This behavior provides flexible electronic states and optimizes the binding strength of oxygen intermediates in the ORR. In addition, quasi in-situ characterization has proven that the addition of Er and the mediation of the oxygen vacancies have enriched the electrons at Pt, effectively reducing the adsorption of Cl− and preventing the poisoning of the active site of Pt. As a result, Er2O3-Pt with half-wave potentials (E1/2) of 0.85 and 0.67 V in alkaline seawater and pure seawater, respectively, was used as a cathodic catalyst in alkaline seawater-based ZABs to obtain a maximum power density of 184.6 mW·cm-2 and remarkable stability in pure seawater.}
}