Synthesis and electrochemical performance of LiNi0.475Mn0.475Al0.05O2 as cathode material for lithium-ion battery from Ni–Mn–Al–O precursor

Dou, Shumei; Wang, Wen-lou; Li, Hong-Ju; Xin, Xiaodong

doi:10.1007/s10008-010-1151-4

Cited by 18 publications

(9 citation statements)

References 24 publications

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“…In the present work, the observed intensity ratio of I 003 /I 104 for the above compound (H950) was found to be 1.71. The degree of cation disorder obtained was found very less compared to literature reports [2,12,16,18,31].…”

Section: X-ray Diffraction Analysiscontrasting

confidence: 71%

Structure and electrical properties of lithium nickel manganese oxide (LiNi0.5Mn0.5O2) prepared by P123 assisted hydrothermal route

et al. 2014

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Section: X-ray Diffraction Analysiscontrasting

confidence: 71%

Structure and electrical properties of lithium nickel manganese oxide (LiNi0.5Mn0.5O2) prepared by P123 assisted hydrothermal route

et al. 2014

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“…Recently, interest in Al doping has been revived. [4][5][6] Croguennec et al found that aluminum substitution in a nickel manganese cobalt oxide induces a decrease in the reversible capacity, but also a major improvement in the thermal stability. 7 Li 1.2 (Al y Co 0.08Ày Mn 0.56 Ni 0.16 )O 2 was shown to display a high structural stability and a high energy density at low discharge rates.…”

Section: Introductionmentioning

confidence: 99%

Effects of Al-doping on the properties of Li–Mn–Ni–O cathode materials for Li-ion batteries: an ab initio study

et al. 2013

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The key properties of a successful cathode material, such as the structural stability during delithiation, the battery voltage, and the Li mobility, were investigated for Al-doped Li-Mn-Ni oxide structures, using density-functional theory and the nudged-elastic band method. The rhombohedral layered structure of LiMn 0.5 Ni 0.5 O 2 with zigzag and flower arrangements of transition metal atoms as well as the monoclinic structure of Li(Li 1/6 Ni 1/6 Mn 2/3 )O 2 were used as base structures. A stabilizing effect of Al-doping was found for all partially lithiated systems considered. The derived battery voltages at zero temperature are generally enhanced by Al-doping. The calculated activation energies for Li jumps suggest slower Li mobility. The Al-doped Li-rich monoclinic structure seems to be most promising as a cathode material because of a comparatively high battery voltage.

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“…When the binding energy between the substitution element and oxygen is greater than that of the TM and oxygen, the lattice oxygen can be stabilized and the structural change of the material can be effectively inhibited. − Substitution of Al in lithium-rich materials enhances the structural stability, reduces the charge transfer impedance, and improves the diffusion coefficient of lithium ions, because the bond dissociation energy of Al–O (512.0 kJ mol –1 ) is larger than that of Ni–O (382.0 kJ mol –1 ). Recent studies have shown that Al substitution can inhibit the phase transition at high voltage. ,, Wang et al have reported that LiNi 0.475 Mn 0.475 Al 0.05 O 2 prepared by substitution of Al-ion into LiNi 0.5 Mn 0.5 O 2 could reduce Li/Ni cation disorder and enhance the discharge capacity and cycle stability . Our previous study found that the Al-substitution sample LiNi 0.47 Al 0.03 Mn 0.5 O 2 could effectively restrain the oxygen-activating reaction .…”

Section: Introductionmentioning

confidence: 89%

“…Recent studies have shown that Al substitution can inhibit the phase transition at high voltage. 13,29,30 31 Our previous study found that the Al-substitution sample LiNi 0.47 Al 0.03 Mn 0.5 O 2 could effectively restrain the oxygenactivating reaction. 32 In summary, Al substitution can improve the thermal stability and structural stability of the cathode material and help to improve the cycling performance as well as high-temperature performance of the material.…”

Section: ■ Introductionmentioning

confidence: 98%

Dual Substitution Strategy in Co-Free Layered Cathode Materials for Superior Lithium Ion Batteries

Jia

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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A dual substitution strategy is introduced to Co-free layered material LiNi0.5Mn0.5O2 by partially replacing Li and Ni with Na and Al, respectively, to achieve a superior cathode material for lithium ion batteries. Na+ ion functions as a “pillar” and a “ cationic barrier” in the lithium layer while Al3+ ion plays an auxiliary role in stabilizing structure and lattice oxygen to improve the electrochemical performance and safety. The stability of lattice oxygen comes from the binding energy between the Ni and O, which is larger due to higher valences of Ni ions, along with a stronger Al–O bond in the crystal structure and the “cationic barrier” effect of Na+ ion at the high-charge. The more stable lattice oxygen reduces the cation disorder in cycling, and Na+ in the Li layer squeezes the pathway of the transition metal from the LiM2 (M = metal) layer to the Li layer, stabilizing the layered crystal structure by inhibiting the electrochemical-driven cation disorder. Moreover, the cathode with Na–Al dual-substitution displays a smaller volume change, yielding a more stable structure. This study unravels the influence of Na–Al dual-substitution on the discharge capacity, midpoint potential, and cyclic stability of Co-free layered cathode materials, which is crucial for the development of lithium ion batteries.

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Synthesis and electrochemical performance of LiNi0.475Mn0.475Al0.05O2 as cathode material for lithium-ion battery from Ni–Mn–Al–O precursor

Cited by 18 publications

References 24 publications

Structure and electrical properties of lithium nickel manganese oxide (LiNi0.5Mn0.5O2) prepared by P123 assisted hydrothermal route

Structure and electrical properties of lithium nickel manganese oxide (LiNi0.5Mn0.5O2) prepared by P123 assisted hydrothermal route

Effects of Al-doping on the properties of Li–Mn–Ni–O cathode materials for Li-ion batteries: an ab initio study

Dual Substitution Strategy in Co-Free Layered Cathode Materials for Superior Lithium Ion Batteries

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