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<p>This study explores and throws more light on a new cobalt-free, nickel-rich LiNi<sub>0.8</sub>Mn<sub>0.1</sub>Fe<sub>0.1</sub>O<sub>2</sub> cathode material for lithium-ion batteries. New technique was used to synthesize cobalt-free cathode material by replacing cobalt with iron in the NMC structure. The material is synthesized using a two-step process: first, an oxalate precursor is formed via co-precipitation, followed by a solid-state reaction with lithium hydroxide and iron citrate. The physico-chemical properties of LiNi<sub>0.8</sub>Mn<sub>0.1</sub>Fe<sub>0.1</sub>O<sub>2</sub> are analyzed using various techniques, including X-ray diffraction, Raman spectroscopy, scanning electron microscopy, thermal gravimetric analysis, energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy (XPS). Electrochemical performance of the LiNi<sub>0.8</sub>Mn<sub>0.1</sub>Fe<sub>0.1</sub>O<sub>2</sub> electrode is evaluated at a C/2 rate within a voltage range of 3.0–4.4&#xa0;V vs. Li<sup>+</sup>/Li and delivers a specific capacity of approximately 80 mAh g<sup>−1</sup>. The capacity increases to 120 mAh/g after decreasing the current density to C/10 rate within the same voltage range of 3.0–4.4&#xa0;V vs. Li<sup>+</sup>/Li. This relatively new cathode material also shows a good rate capability.</p>

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An overview on the structure and electrochemical properties of Co-free Ni-rich LiNi0.8Mn0.1Fe0.1O2 as a cathode material for lithium-ion batteries

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年8月21日

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  • Rasha S. El-Tawil,
  • Somia M. Abbas,
  • Ashraf E. Abdel-Ghany,
  • Ahmed M. Hashem,
  • Luca Bargnesi,
  • Catia Arbizzani

摘要

This study explores and throws more light on a new cobalt-free, nickel-rich LiNi0.8Mn0.1Fe0.1O2 cathode material for lithium-ion batteries. New technique was used to synthesize cobalt-free cathode material by replacing cobalt with iron in the NMC structure. The material is synthesized using a two-step process: first, an oxalate precursor is formed via co-precipitation, followed by a solid-state reaction with lithium hydroxide and iron citrate. The physico-chemical properties of LiNi0.8Mn0.1Fe0.1O2 are analyzed using various techniques, including X-ray diffraction, Raman spectroscopy, scanning electron microscopy, thermal gravimetric analysis, energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy (XPS). Electrochemical performance of the LiNi0.8Mn0.1Fe0.1O2 electrode is evaluated at a C/2 rate within a voltage range of 3.0–4.4 V vs. Li+/Li and delivers a specific capacity of approximately 80 mAh g−1. The capacity increases to 120 mAh/g after decreasing the current density to C/10 rate within the same voltage range of 3.0–4.4 V vs. Li+/Li. This relatively new cathode material also shows a good rate capability.