Wang, HuaHashem, Ahmed M.Abdel-Ghany, Ashraf E.Abbas, Somia M.El-Tawil, Rasha S.Li, TianyiLi, XintongEl-Mounayri, HazimTovar, AndresZhu, LikunMauger, AlainJulien, Christian M.2023-07-032023-07-032022-06-17Wang H, Hashem AM, Abdel-Ghany AE, et al. Effect of Cationic (Na+) and Anionic (F-) Co-Doping on the Structural and Electrochemical Properties of LiNi1/3Mn1/3Co1/3O2 Cathode Material for Lithium-Ion Batteries. Int J Mol Sci. 2022;23(12):6755. Published 2022 Jun 17. doi:10.3390/ijms23126755https://hdl.handle.net/1805/34087Elemental doping for substituting lithium or oxygen sites has become a simple and effective technique to improve the electrochemical performance of layered cathode materials. Compared with single-element doping, this work presents an unprecedented contribution to the study of the effect of Na+/F- co-doping on the structure and electrochemical performance of LiNi1/3Mn1/3Co1/3O2. The co-doped Li1-zNazNi1/3Mn1/3Co1/3O2-zFz (z = 0.025) and pristine LiNi1/3Co1/3Mn1/3O2 materials were synthesized via the sol-gel method using EDTA as a chelating agent. Structural analyses, carried out by X-ray diffraction, Raman spectroscopy, and X-ray photoelectron spectroscopy, revealed that the Na+ and F- dopants were successfully incorporated into the Li and O sites, respectively. The co-doping resulted in larger Li-slab spacing, a lower degree of cation mixing, and the stabilization of the surface structure, which substantially enhanced the cycling stability and rate capability of the cathode material. The Na/F co-doped LiNi1/3Mn1/3Co1/3O2 electrode delivered an initial specific capacity of 142 mAh g-1 at a 1C rate (178 mAh g-1 at 0.1C), and it maintained 50% of its initial capacity after 1000 charge-discharge cycles at a 1C rate.en-USAttribution 4.0 InternationalLayered oxideCathode materialLong-life cyclingLithium-ion batteriesArticle