Recently, Dr. Li Junshan, a distinguished research fellow at Chengdu University (CDU)'s Institute for Advanced Study, published a research paper titled "Boosting polysulfide conversion on Fe-doped nickel diselenide towards robust lithium-sulfur batteries" in the Advanced Functional Materials, a first-rate journal in the field of materials science (CAS Q1 journal, IF: 18.5). Dr. Li Junshan is the paper's first author, with CDU as the author's affiliation.

This paper reports the synthesis of NiSe₂ and Fe-doped NiSe₂ particles and investigates the impact of Fe doping on the electronic structure, catalytic activity, and performance of NiSe₂ as a coating on the cathode side of the Li–S battery (LSB) separator. Experimental analyses and first-principles calculations reveal that surface doping in NiSe₂ enhances the density of states at the Fermi level and introduces unpaired electrons, boosting LiPS adsorption and catalytic conversion. These synergistic effects significantly improve the catalytic performance, cycling stability, and overall performance of LSB cells.

This study was carried out in close collaboration with Lanzhou University, the Catalonia Institute for Energy Research in Spain, the University of California, and other institutions. It also received funding from the General Program of the Sichuan Natural Science Foundation, the Regional Special Support Program of the China Postdoctoral Science Foundation, and the European Regional Development Fund, among other sources.

Paper link: https://advanced.onlinelibrary.wiley.com/doi/full/10.1002/advs.202501485

Editor: Min Xiuling Executive Editor: Lyu Jia