Study of the electrochemical performance of highly Fe-doped SnO2 nanoparticles used as anode material for Li-ion batteries
Othmen W.B.H. Nasser R. Alahmari A.S. Tesfaye A.T. Djenizian T. Alshahrani M. Melhi S. Song J.-M. Elhouichet H.
July 2025Springer Science and Business Media Deutschland GmbH
Ionics
2025#31Issue 76753 - 6767 pp.
Iron (Fe)-doped SnO2 nanosized particles with various Fe amount were successfully elaborated to evaluate their performance as negative electrode for Li-ion battery. The XRD measurements reveal the rutile SnO2 structure for all doping concentrations together with the purity of the obtained phase. The NPs size for different Fe amounts as well as the lattice parameters and lattice volume are affected by Fe doping. HRTEM images further prove the nanoscale size of the obtained Fe-doped SnO2 particles. XPS measurements show the successful insertion of Fe as dopant in the SnO2 lattice without the formation of iron oxide phases and suggest that oxygen vacancies density is well affected by iron doping. Cyclic voltammetry results reveal an obvious dependence of the electrochemical activity on iron amount. These measurements suggest that Fe doping reduces the structural and textural changes undergone by SnO2 NPs during cycling. The galvanostatic charge/discharge curves shows that Fe doping improves the SnO2 cycling capability. This result is also demonstrated through the cycling performance test showing also that the optimal Fe concentration is around 10% for which the capacity reaches 555 mAh/g with a good cycling stability. Along with its effect on the specific area and the lattice parameters that affects the Li+ insertion/disinsertion rate, we suggested that the incorporation of Fe3+ ions stimulate the lithiation reactions which may increase the electrochemical property of SnO2 NPs. The measurements of the electrochemical impedance reveal that an optimal Fe amount for the electrochemical activity results from a competitiveness between the charge transfer resistance and the dielectric behavior of Fe-doped SnO2 NPs.
Charge transfer resistance , Cycling performance , Fe-doping , Li-ion battery , SnO2 nanoparticles
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Mediterranean Institute of Technology, South Mediterranean University, Tunis, Tunisia
Department of Physics, Sciences Faculty of Tunis, University of Tunis El Manar, Tunis, 2092, Tunisia
School of Materials Science and EngineeringAnhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized MaterialsKey Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Anhui University, Anhui, Hefei, 230601, China
Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia
Laboratoire Chimie Provence (UMR 6264, Electrochemistry of Materials, Universités d’Aix-Marseille I, III-CNRS, II, Marseille, France
Center of Microelectronics in Provence, Department of Flexible Electronics, F – 13541, Mines Saint-Etienne, Gardanne, France
Center of Physical-Chemical Methods of Research and Analysis, Al-Farabi Kazakh National University, Tole Bi Str, Almaty, 96 A, Kazakhstan
Department of Physics, College of Sciences, University of Bisha, P.B.551, Bisha, 61922, Saudi Arabia
Department of Chemistry, College of Sciences, University of Bisha, P.B.551, Bisha, 61922, Saudi Arabia
Mediterranean Institute of Technology
Department of Physics
School of Materials Science and EngineeringAnhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized MaterialsKey Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials
Department of Biology
Laboratoire Chimie Provence (UMR 6264
Center of Microelectronics in Provence
Center of Physical-Chemical Methods of Research and Analysis
Department of Physics
Department of Chemistry
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