LiNi0.5Mn1.5O4 Spinel and Its Derivatives as Cathodes for Li-Ion Batteries

Liu, Guoqiang

doi:10.5772/25968

Cited by 7 publications

(6 citation statements)

References 99 publications

(113 reference statements)

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“…This is a desired result and much better than the previous results with 14 to 20 % 4-V plateau. [23,36] Discharge capacity reaches 130 mA h at 0.2 C, which is 8 % greater than the already reported results. [23] With cycling, a slight decrease in the discharge capacity is observed, which is common owing to the reaction of the product with electrolyte.…”

Section: Discharge Behaviourcontrasting

confidence: 66%

“…[23,36] Discharge capacity reaches 130 mA h at 0.2 C, which is 8 % greater than the already reported results. [23] With cycling, a slight decrease in the discharge capacity is observed, which is common owing to the reaction of the product with electrolyte. [4] The cell delivers more than 94 % capacity after 50 cycles.…”

Section: Discharge Behaviourcontrasting

confidence: 66%

“…[21] Various efforts have been made to dope lithium manganates with transition metals such as cobalt, nickel, chromium, and copper to get high-voltage material that will lead to improved power density. [22,23] Among these, nickeldoped lithium manganates have gathered the most interest due to a high cell potential of 4.8 V, better electrical conductivity, and good cyclability. Coupling of nanoscale synthesis with nickel doping has resulted in a remarkable increase in the energy and power densities.…”

Section: Introductionmentioning

confidence: 99%

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Low-temperature Synthesis of Nanocrystalline LiNi0.5Mn1.5O4 and its Application as Cathode Material in High-power Li-ion Batteries

et al. 2014

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Nickel-doped lithium manganate spinels are a potential material for future energy storage owing to high cell potential and low price. Phase-pure spinels are difficult to prepare by conventional solid-state synthesis methods owing to loss of oxygen from the crystal lattice at high temperature (,8008C). Loss of oxygen causes Jahn-Teller distortion and Mn 4þ is converted into Mn 3þ , which results in undesired double-plateau discharge and reduction in capacity and stability of the material. In this study, nanocrystalline phase-pure LiNi 0.5 Mn 1.5 O 4 was prepared by co-precipitation with cyclohexylamine followed by calcination at a low temperature of 5008C. X-ray diffraction studies confirmed that a highly crystalline face-centred cubic product is formed with F-d3m space group. Scanning electron microscopy and transmission electron microscope studies confirmed that the particles are in the nano range with a porous structure. The as-prepared LiNi 0.5 Mn 1.5 O 4 showed a high initial specific capacity (up to 130 mA h g À1 ) and retained up to 120 mA h g À1 up to 50 cycles. The material has high conductivity and remains stable up to a 20-C discharge rate.

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Section: Discharge Behaviourcontrasting

confidence: 66%

Section: Discharge Behaviourcontrasting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

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Low-temperature Synthesis of Nanocrystalline LiNi0.5Mn1.5O4 and its Application as Cathode Material in High-power Li-ion Batteries

et al. 2014

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“…Several reasons have been proposed for this capacity fading, and safety concerns include degradation of the electrolyte at higher cutoff voltages (>4.5 V), structural instability, and metal ion dissolution in the electrolyte due to HF generation. ,− Among the developed materials for lithium-ion batteries, the spinel LiNi 0.5 Mn 1.5 O 4 (LNMO) is a promising cathode material because of its high energy and power density, which results from the high theoretical capacity (∼147 mAh g –1 ) and operating voltage (∼4.7 V vs Li + /Li). However, it still suffers from poor cycling performance due to the decomposition of electrolytes at a high operating voltage and temperature (>45 °C), which results in parasitic reactions on the surface of the materials and causes in a rapid fade in the capacity. − …”

Section: Introductionmentioning

confidence: 99%

Understanding the Origin of the Ultrahigh Rate Performance of a SiO₂-Modified LiNi_0.5Mn_1.5O₄ Cathode for Lithium-Ion Batteries

Nisar

Al-Hail

Kumar

et al. 2019

ACS Appl. Energy Mater.

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LiNi0.5Mn1.5O4 (LNMO) is one of the most promising cathode materials for next-generation lithium-ion batteries for rapid charging–discharging applications. The surfaces of LNMO samples are coated with different amounts (0.5–2.0 wt %) of silica (SiO2) using a cost-effective and scalable ball milling process, and the surface-modified samples shows excellent electrochemical stability with conventional liquid electrolyte. The advantages of this coating are demonstrated by the improved electrochemical performances at ambient and elevated temperatures (25 and 55 °C) using half- and full-cell configurations. The solid electrolyte interface (SEI) and coating properties have been highlighted by ex situ TEM analysis, which indicates the close attachment and good wetting of the SiO2 layer with the LNMO active particles. Importantly, the 1 wt % SiO2-coated material cycled at 10, 40, and 80 C rates for 400 cycles exhibits excellent cycling stability with capacity retentions of 96.7, 87.9, and 82.4%, respectively. The 1 wt % SiO2-coated material also shows excellent cycling stability when charged at 6 C (10 min.) and discharged at C/3 for 500 cycles. The interfacial resistances of the SiO2-coated LiNi0.5Mn1.5O4 is found to be much lower compared to bare material and does not considerably increase with the amount of coating. Overall, the scalable and cost-effective strategy of SiO2 coating applied to LiNi0.5Mn1.5O4 lowers the interfacial charge transfer resistance and enables the materials to be suitable for extremely fast-charging electric vehicle battery applications.

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“…Developing cathode materials with high voltage or high capacity is a key strategy to achieve high energy densities in lithium-ion batteries (LIBs) . One very promising high-voltage cathode is spinel lithium manganese nickel oxide (LiMn 1.5 Ni 0.5 O 4 , LMNO), which offers operating voltage of 4.7 V vs Li/Li + , high theoretical capacity (147 mAh g –1 ), low-cost, and environmentally benign properties . However, its unsatisfactory cycling performance must be addressed before it can be commercially viable in LIBs.…”

Section: Introductionmentioning

confidence: 99%

Stabilizing High-Voltage Cathodes via Ball-Mill Coating with Flame-Made Nanopowder Electrolytes

Brandt

Temeche

et al. 2022

ACS Appl. Mater. Interfaces

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LiMn1.5Ni0.5O4 (LMNO) spinel has recently been the subject of intense research as a cathode material because it is cheap, cobalt-free, and has a high discharge voltage (4.7 V). However, the decomposition of conventional liquid electrolytes on the cathode surface at this high oxidation state and the dissolution of Mn2+ have hindered its practical utility. We report here that simply ball-mill coating LMNO using flame-made nanopowder (NPs, 5–20 wt %, e.g., LiAlO2, LATSP, LLZO) electrolytes generates coated composites that mitigate these well-recognized issues. As-synthesized composite cathodes maintain a single P4332 cubic spinel phase. Transmission electron microscopy (TEM) and X-ray photoelectron spectra (XPS) show island-type NP coatings on LMNO surfaces. Different NPs show various effects on LMNO composite cathode performance compared to pristine LMNO (120 mAh g–1, 93% capacity retention after 50 cycles at C/3, ∼67 mAh g–1 at 8C, and ∼540 Wh kg–1 energy density). For example, the LMNO + 20 wt % LiAlO2 composite cathodes exhibit Li+ diffusivities improved by two orders of magnitude over pristine LMNO and discharge capacities up to ∼136 mAh g–1 after 100 cycles at C/3 (98% retention), while 10 wt % LiAlO2 shows ∼110 mAh g–1 at 10C and an average discharge energy density of ∼640 Wh kg–1. Detailed postmortem analyses on cycled composite electrodes demonstrate that NP coatings form protective layers. In addition, preliminary studies suggest potential utility in all-solid-state batteries (ASSBs).

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LiNi0.5Mn1.5O4 Spinel and Its Derivatives as Cathodes for Li-Ion Batteries

Cited by 7 publications

References 99 publications

Low-temperature Synthesis of Nanocrystalline LiNi0.5Mn1.5O4 and its Application as Cathode Material in High-power Li-ion Batteries

Low-temperature Synthesis of Nanocrystalline LiNi0.5Mn1.5O4 and its Application as Cathode Material in High-power Li-ion Batteries

Understanding the Origin of the Ultrahigh Rate Performance of a SiO₂-Modified LiNi_0.5Mn_1.5O₄ Cathode for Lithium-Ion Batteries

Stabilizing High-Voltage Cathodes via Ball-Mill Coating with Flame-Made Nanopowder Electrolytes

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LiNi0.5Mn1.5O4 Spinel and Its Derivatives as Cathodes for Li-Ion Batteries

Cited by 7 publications

References 99 publications

Low-temperature Synthesis of Nanocrystalline LiNi0.5Mn1.5O4 and its Application as Cathode Material in High-power Li-ion Batteries

Low-temperature Synthesis of Nanocrystalline LiNi0.5Mn1.5O4 and its Application as Cathode Material in High-power Li-ion Batteries

Understanding the Origin of the Ultrahigh Rate Performance of a SiO2-Modified LiNi0.5Mn1.5O4 Cathode for Lithium-Ion Batteries

Stabilizing High-Voltage Cathodes via Ball-Mill Coating with Flame-Made Nanopowder Electrolytes

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Understanding the Origin of the Ultrahigh Rate Performance of a SiO₂-Modified LiNi_0.5Mn_1.5O₄ Cathode for Lithium-Ion Batteries