Co-precipitation of Mg-doped Ni0.8Co0.1Mn0.1(OH)2: effect of magnesium doping and washing on the battery cell performance

Laine, Petteri; Hietaniemi, Marianna; Välikangas, Juho; Kauppinen, Toni; Tynjälä, Pekka; Hu, Tao; Wang, Shubo; Singh, Harishchandra; Lassi, Ulla

doi:10.1039/d2dt02246j

Cited by 5 publications

(5 citation statements)

References 39 publications

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“…These results are consistent with the SEM observations in Figure 2a-d. Based on our extensive previous research, we have found that different particle distributions can result in distinct packing densities and that optimal particle distribution can lead to higher tap densities and an increased number of active sites, ultimately resulting in improved electrochemical performance [10,11,30].…”

Section: Resultsmentioning

confidence: 99%

Optimized Morphology and Tuning the Mn3+ Content of LiNi0.5Mn1.5O4 Cathode Material for Li-Ion Batteries

et al. 2023

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The advantages of cobalt-free, high specific capacity, high operating voltage, low cost, and environmental friendliness of spinel LiNi0.5Mn1.5O4 (LNMO) material make it one of the most promising cathode materials for next-generation lithium-ion batteries. The disproportionation reaction of Mn3+ leads to Jahn–Teller distortion, which is the key issue in reducing the crystal structure stability and limiting the electrochemical stability of the material. In this work, single-crystal LNMO was synthesized successfully by the sol-gel method. The morphology and the Mn3+ content of the as-prepared LNMO were tuned by altering the synthesis temperature. The results demonstrated that the LNMO_110 material exhibited the most uniform particle distribution as well as the presence of the lowest concentration of Mn3+, which was beneficial to ion diffusion and electronic conductivity. As a result, this LNMO cathode material had an optimized electrochemical rate performance of 105.6 mAh g−1 at 1 C and cycling stability of 116.8 mAh g−1 at 0.1 C after 100 cycles.

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Section: Resultsmentioning

confidence: 99%

Optimized Morphology and Tuning the Mn3+ Content of LiNi0.5Mn1.5O4 Cathode Material for Li-Ion Batteries

et al. 2023

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“…The surface morphology of the cathode materials made of V and Zn co-doped LiNi0.80ZnxVyO2 (x = 0.18, 0.16, and 0.14, and y = 0.02, 0.04, and 0.06) is shown in Figure 3(a-c). The formation of well-shaped particles is seen by the scanning electron micrographs [38]. The increased doping rate during synthesis may be responsible for the growth that is also seen [39].…”

Section: Morphological Analysismentioning

confidence: 87%

Synthesis, characterization, and evaluation of improved electrochemical performance of vanadium and zinc co-doped Ni-rich oxide cathode materials: Experimental and first-principles study

Usman,

Murtaza,

Ayyaz

2024

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Ni-rich transition metal-based oxide materials have excellent electrochemical properties that make their specific discharge capacity and voltages suitable as cathodes in Li-ion batteries. This current investigation uses solid-state synthesis to create a variety of Ni-rich metal oxide cathode materials, including vanadium (V) and zinc (Zn) co-doped LiNiO2. XRD analysis demonstrates that the synthesized materials exhibit a stable hexagonal structure with an R3m space group. Scanning electron micrographs (SEM) reveal the production of well-shaped particles with different doping concentrations, while Energy Dispersive Spectroscopy (EDS) mapping validates the presence of Ni, V, Zn, and O with the correct compositions. Selected area electron diffraction (SEAD) and transmission electron microscopy (TEM) confirm that the synthesized polycrystalline LiNi0.80Zn0.06V0.14O2 cathode material has crystals organized in a hexagonal phase. Structural properties are calculated by Wien2K code forms the hexagonal supercell structure using density functional theory (DFT). The spin-polarised electronic band structures and density of states (DOS) are calculated for all given compounds showing the ferromagnetic nature. The theoretical discharge capacity and intercalation voltages are determined by adding up the total energies of the optimized compounds. Theoretical calculations and experimental results both examined Ni-rich co-doped Zn and V transition metal oxides as potential materials for fabricating coin cells in next-generation batteries.

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“…Co-precipitated magnesium was observed evenly distributed in the samples. [11] Use of calcium in a Li 1 À 2x Ca x CoO 2 cathode materials has also been reported in literature. According to the studies of W.S.…”

Section: Introductionmentioning

confidence: 86%

“…Mg‐doping was also performing better while higher C‐rates were applied in the cycling. Co‐precipitated magnesium was observed evenly distributed in the samples [11] …”

Section: Introductionmentioning

confidence: 90%

“…Weng et al [7] concluded that if the concentration of Mg stays under 360 mg/L in the feed solution, the presence of Mg 2 + in the final cathode materials stays under acceptable concentration (x � 0.01) and does not have significant impact on the overall performance of the cathode materials. Laine et al [11] also investigated effect of magnesium doping to NCM811 cathode material. Mg was added to the metal sulfate solution with concentration targets of 0, 0.5 and 1 wt-% in the solution.…”

Section: Introductionmentioning

confidence: 99%

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Co‐precipitation of NCM 811 Using Recycled and Purified Manganese: Effect of Impurities on the Battery Cell Performance

et al. 2023

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Co‐precipitation of NCM811 precursors and cathodes for lithium‐ion batteries was carried out using recycled and purified manganese solution. In this paper, the aim is to study the role of the impurities in the co‐precipitation step of NMC811 and further in the battery cell performance. Based on the results, cationic impurities (Ca, Zn, Mg, and Fe) are co‐precipitated in the NMC811 precursors, as expected based on the thermodynamic considerations. The presence of these impurities was confirmed by several characterizations. Impurities did not affect the particle morphology or tap density of NMC811. Impurities had surprisingly minor effect on the cell performance. During the cycling, these cells provided good cyclability and high‐capacity retention after 1100 cycles compared to reference samples.

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Co-precipitation of Mg-doped Ni_0.8Co_0.1Mn_0.1(OH)₂: effect of magnesium doping and washing on the battery cell performance

Abstract: Co-precipitation of Ni0.8Co0.1Mn0.1(OH)2 (NCM811) and Mg-doped (0.25 wt% and 0.5 wt%) NCM811 precursors are carried from concentrated metal sulphate solutions. In this paper, the aim is to study the role...

Cited by 5 publications

References 39 publications

Optimized Morphology and Tuning the Mn3+ Content of LiNi0.5Mn1.5O4 Cathode Material for Li-Ion Batteries

Optimized Morphology and Tuning the Mn3+ Content of LiNi0.5Mn1.5O4 Cathode Material for Li-Ion Batteries

Synthesis, characterization, and evaluation of improved electrochemical performance of vanadium and zinc co-doped Ni-rich oxide cathode materials: Experimental and first-principles study

Co‐precipitation of NCM 811 Using Recycled and Purified Manganese: Effect of Impurities on the Battery Cell Performance

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