Combustion-synthesized LiNi0.6Mn0.2Co0.2O2 as cathode material for lithium ion batteries

Ahn, Wook; Lim, Sung Nam; Jung, Kyu Nam; Yeon, Sun Hwa; Kim, Kwang Bum; Song, Hanjung; Shin, Kyoung Hee

doi:10.1016/j.jallcom.2014.03.123

Cited by 77 publications

(41 citation statements)

References 31 publications

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“…The spectra of Ni 2p 3/2 widen due to the presence of Ni 2þ and Ni 3þ [15,31]. This result is consistent with the literature [21]. Obviously, the calcination temperatures almost do not lead to change of the Ni, Co, and Mn valence states in all samples because all of samples show similar binding energies.…”

Section: Physical and Electrochemical Properties Of The 850-st Samplesupporting

confidence: 90%

“…However, it also suffers from lower cycle-stability because Ni 4þ ions take the place of Li þ ions while charging, and more Ni 4þ ions more easily attack the electrolyte under high voltage [14e16]. Recently, various methods have been used to synthesize Ni-high LiNi 0.6 Co 0.2 Mn 0.2 O 2 , such as a coprecipitation method [17,18], a solid-state method [19], a spraydrying method [20] and a combustion method [21,22]. Many scholars [17] have used the co-precipitation method to synthesize spherical LiNi 0.6 Co 0.2 Mn 0.2 O 2 cathode materials.…”

Section: Introductionmentioning

confidence: 99%

“…All of the above factors can lead to the low utilization rate. Ahn et al [21] reported a LiNi 0.6 Co 0.2 Mn 0.2 O 2 material that was prepared by low-sintering-temperature combustion of acetate and NH 2 CONH 2 . The nanoscale material exhibited excellent cycling performance, but its capacity was only 170 mA h$g À1 at a constant 20 mA$g À1 and a voltage of 2.8e4.3 V, and its rate performance is unsatisfactory.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Single-crystal LiNi0.6Co0.2Mn0.2O2 as high performance cathode materials for Li-ion batteries

Wang

et al. 2016

Journal of Alloys and Compounds

116

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Section: Physical and Electrochemical Properties Of The 850-st Samplesupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Single-crystal LiNi0.6Co0.2Mn0.2O2 as high performance cathode materials for Li-ion batteries

Wang

et al. 2016

Journal of Alloys and Compounds

116

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“…These researchers also reported that if Ni 2+ was partially replaced by Li + , the remaining Ni existed as Ni 3+ , leading to capacity loss [154]. In addition, researchers have also reported that the atomization co-precipitation method can be used to obtain homogeneous spherical shaped primary NMC particles by forming an aerosol of precursors with an ultrasonic nebulizer [205] and that a similar effect can be achieved by using a self-combustion method, which produces massive heat flow to accelerate synthesis and therefore improve the uniformity of NMC particles [206]. Furthermore, nanoscale surface treatments utilizing Co and Li precursors combined with high-temperature sintering have been used to transform NMC622 surfaces into a Co-rich area with a NiO rocksalt phase that can act as a pillar layer to prevent inter-slab collapse [129].…”

Section: Advanced Preparation Methodsmentioning

confidence: 99%

Degradation Mechanisms and Mitigation Strategies of Nickel-Rich NMC-Based Lithium-Ion Batteries

Yuan

Zhang

et al. 2019

Electrochem. Energ. Rev.

489

383

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The demand for lithium-ion batteries (LIBs) with high mass-specific capacities, high rate capabilities and long-term cyclabilities is driving the research and development of LIBs with nickel-rich NMC (LiNi x Mn y Co 1−x−y O 2 , x ⩾ 0.5 ) cathodes and graphite (Li x C 6 ) anodes. Based on this, this review will summarize recently reported and widely recognized studies of the degradation mechanisms of Ni-rich NMC cathodes and graphite anodes. And with a broad collection of proposed mechanisms on both atomic and micrometer scales, this review can supplement previous degradation studies of Ni-rich NMC batteries. In addition, this review will categorize advanced mitigation strategies for both electrodes based on different modifications in which Ni-rich NMC cathode improvement strategies involve dopants, gradient layers, surface coatings, carbon matrixes and advanced synthesis methods, whereas graphite anode improvement strategies involve surface coatings, charge/discharge protocols and electrolyte volume estimations. Electrolyte components that can facilitate the stabilization of anodic solid electrolyte interfaces are also reviewed, and trade-offs between modification techniques as well as controversies are discussed for a deeper understanding of the mitigation strategies of Ni-rich NMC/graphite LIBs. Furthermore, this review will present various physical and electrochemical diagnostic tools that are vital in the elucidation of degradation mechanisms during operation to supplement future degradation studies. Finally, this review will summarize current research focuses and propose future research directions.

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“…Aside presenting only raw data sets and solely assigning expected oxidation states, simplifying approaches such as reducing the complex multiplet splitting to single Voigt peak shapes are often used, which, in consequence, could lead at least to uncertainties in the quantitative chemical information. To the best of our knowledge, only a few groups apply complex multiplet fitting procedures during XPS characterization of LIB active materials …”

Section: Introductionmentioning

confidence: 99%

Surface analytical approaches to reliably characterize lithium ion battery electrodes

Azmi

Trouillet

Strafela

et al. 2017

Surface & Interface Analysis

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Active Li-ion battery materials are typically characterized using X-ray photoelectron spectroscopy when regarding chemical state elucidation. This work presents a multiplet-splitting approach comprising in minimum 3 third-row transition metals, namely, Mn, Co, and Ni, to improve the results in comparison to peak barycenter or single symmetric Voigt profile approaches. The achieved X-ray photoelectron spectroscopy 2p templates in particular address the complex peak structures consisting of significant photoelectron multiplet splitting, shake-up and plasmon loss features, and additional Auger and photoelectron overlaps, inevitable also for a reliable quantification. To separate from topography effects and contributions of the electrode's binder and conductive carbon in powder electrodes, the developed procedure in a first attempt was successfully transferred to novel radio frequency magnetron sputtered Li-Ni-Co-Mn-O thin films, designed for all-solid-state Li-ion batteries. In all cases, special care was taken with respect to air sensitivity, contamination during sample handling, and probable method induced sample decomposition. Composition and origin of the anode's surface electrolyte interphase are rather complicated, and therefore, XPS and time-of-flight secondary ion mass spectrometry results are still controversially discussed. [5][6][7][8][9][10][11] However, in the case of the first-row transition metals, which are commonly used in LIB's cathodes, the analytical potential of XPS is not widely used in its entirety. Obviously, the major reason for this fact is mainly due to the complex multiplet splitting, peak overlaps, and additional shake-up and plasmon features in the respective 2p XP spectra, although fundamental studies are available mainly by the work of Biesinger et al, 12 who considered a semiempirical approach combining the analysis of high purity oxide/hydroxide reference samples and theoretically calculated free-ion multiplet structures of core 2p vacancy levels by Gupta and Sen. 13 Aside presenting only raw data sets and solely assigning expected oxidation states, [14][15][16][17][18][19][20] simplifying approaches such as reducing the complex multiplet splitting to single Voigt peak shapes are often used, which, in consequence, could lead at least to uncertainties in the quantitative chemical information. 17,[21][22][23][24] To the best of our knowledge, only a few groups apply complex multiplet fitting procedures during XPS characterization of LIB active materials. 25,26

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Combustion-synthesized LiNi0.6Mn0.2Co0.2O2 as cathode material for lithium ion batteries

Cited by 77 publications

References 31 publications

Single-crystal LiNi0.6Co0.2Mn0.2O2 as high performance cathode materials for Li-ion batteries

Single-crystal LiNi0.6Co0.2Mn0.2O2 as high performance cathode materials for Li-ion batteries

Degradation Mechanisms and Mitigation Strategies of Nickel-Rich NMC-Based Lithium-Ion Batteries

Surface analytical approaches to reliably characterize lithium ion battery electrodes

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