High performance of Co-free LiNi Mn1-O2 cathodes realized by nonmagnetic ion substitution for Li-ion batteries

Yan, Honglin; Ha, Yuan; Ye, Tao; Gao, Xiaoya; Yue, Xiangting; Li, Zhimin

doi:10.1016/j.cej.2023.142926

Cited by 9 publications

(1 citation statement)

References 49 publications

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“…Exploring efficient Co-free Ni-rich layered oxide cathodes has attracted more attention, along with the continuously increasing demand for high-performance lithium-ion batteries. − As Ni-rich LiNi x Mn 1– x O 2 ( x ≥ 0.5) layered cathode materials suffer from thermal and chemomechanical instability, a number of metallic dopants involving metal cations Mo, Al, , Mg, Sn, Ge, Ca, In, Fe, , etc., as well as surface coatings including manganese pyrophosphate, phosphoric acid, Li 2 SnO 3 , Li 4 GeO 4 , LiNbO 3 , etc., have been reported to improve the electrochemical performance and stability of LiNi x Mn 1– x O 2 .…”

Section: Introductionmentioning

confidence: 99%

Fe Dopants Intensify the Electrochemical Performance of LiNi_0.60Mn_0.40O₂ Cathode Materials

Liao,

Wang,

Liu

et al. 2024

Ind. Eng. Chem. Res.

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Co-free Ni-rich layered oxide cathodes need urgent development due to the continuously increasing demand for highperformance lithium-ion batteries. Here, the cathode materials of LiNi 0.60 Mn 0.40 O 2 (NM) and Fe-doped LiNi 0.60 Mn 0.40−x Fe x O 2 (NMFe, x = 0.01−0.05) were prepared via a coprecipitation method associated with a high shear mixer, and the corresponding electrochemical performance was assessed. The optimal Fe-doped sample (NMFe-3) exhibits a discharge capacity of 185.3 mAh•g −1 (0.1C), higher than that of NM (182.5 mAh•g −1 ) at 2.8−4.5 V and 25 °C. Characterization based on XRD, XPS, HRTEM, EIS, CV, and GITT tests illustrates the presence of LiFeO 2 crystal planes inside the NMFe samples, the lower values of the electrode/electrolyte interface impedance of the Fe-doped samples, and the charge-transfer impedance of the electrodes, as well as higher Li + diffusion rate during charge/discharge processes. In situ XRD tests confirm that NMFe-3 exhibits excellent reversible phase transition during the charge/discharge process. DFT calculations disclose that Fe dopants would make Li layer spacings enlarged and lower the energy barrier of Li + diffusion. This work provides a facile route to synthesize Fe-substituted Co-free Ni-rich cathode materials with excellent electrochemical performance for lithium-ion batteries.

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Section: Introductionmentioning

confidence: 99%

Fe Dopants Intensify the Electrochemical Performance of LiNi_0.60Mn_0.40O₂ Cathode Materials

Liao,

Wang,

Liu

et al. 2024

Ind. Eng. Chem. Res.

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Enhanced high-rate and cyclic performance of Co-free and Ni-rich LiNi0.95Mn0.05O2 cathodes by coating electronic/Li+ conductive PANI-PEG layer

He,

Zhang,

Wang

et al. 2024

J Solid State Electrochem

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Cycling stability of LiNi0.80Co0.15Al0.05O2 cathode modified by solid-state electrolyte film

Yan

Gao

Yue

et al. 2023

Applied Surface Science

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High performance of Co-free LiNi Mn1-O2 cathodes realized by nonmagnetic ion substitution for Li-ion batteries

Cited by 9 publications

References 49 publications

Fe Dopants Intensify the Electrochemical Performance of LiNi_0.60Mn_0.40O₂ Cathode Materials

Fe Dopants Intensify the Electrochemical Performance of LiNi_0.60Mn_0.40O₂ Cathode Materials

Enhanced high-rate and cyclic performance of Co-free and Ni-rich LiNi0.95Mn0.05O2 cathodes by coating electronic/Li+ conductive PANI-PEG layer

Cycling stability of LiNi0.80Co0.15Al0.05O2 cathode modified by solid-state electrolyte film

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High performance of Co-free LiNi Mn1-O2 cathodes realized by nonmagnetic ion substitution for Li-ion batteries

Cited by 9 publications

References 49 publications

Fe Dopants Intensify the Electrochemical Performance of LiNi0.60Mn0.40O2 Cathode Materials

Fe Dopants Intensify the Electrochemical Performance of LiNi0.60Mn0.40O2 Cathode Materials

Enhanced high-rate and cyclic performance of Co-free and Ni-rich LiNi0.95Mn0.05O2 cathodes by coating electronic/Li+ conductive PANI-PEG layer

Cycling stability of LiNi0.80Co0.15Al0.05O2 cathode modified by solid-state electrolyte film

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Fe Dopants Intensify the Electrochemical Performance of LiNi_0.60Mn_0.40O₂ Cathode Materials

Fe Dopants Intensify the Electrochemical Performance of LiNi_0.60Mn_0.40O₂ Cathode Materials