Chemical coupling constructs amorphous silica modified LiNi0.6Co0.2Mn0.2O2 cathode materials and its electrochemical performances

Chen, Yong-Xiang; Tang, Shuyun; Deng, Shiyi; Lei, Tongxing; Li, Yunjiao; Li, Wei; Cao, Guolin; Zhu, Jing; Zhang, Jinping

doi:10.1016/j.jpowsour.2019.05.042

Cited by 60 publications

(35 citation statements)

References 50 publications

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“…Coating electrochemical and chemically inert materials on the cathode surface to separate the electrolyte is an efficient method to prevent the rapid increase of interface resistance and electrochemical oxidation, shown by the oxide layer materials (Ce 2 O 3 , [63] Al 2 O 3 , [64] B 2 O 3 , [65] Nd 2 O 3 , [66] SiO 2 , [67] TiO 2 , [68] WO 3 , [69] ZrO 2 , [70] Sb 2 O 3 [71] ), fluoride layer (CaF 2 , [72] AlF 3 [73] ), and phosphate‐based (MnPO 4 , [74] MgHPO 4 , [75] ZrP 2 O 7 , [76] TNPP [77] ) materials reported in recent years. Wu et al [63] .…”

Section: Ni‐rich Ternary Cathode Materialsmentioning

confidence: 99%

Nickel‐Rich Layered Cathode Materials for Lithium‐Ion Batteries

Qiu

Yang

et al. 2021

Chemistry A European J

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Nickel‐rich layered transition metal oxides are considered as promising cathode candidates to construct next‐generation lithium‐ion batteries to satisfy the demands of electrical vehicles, because of the high energy density, low cost, and environment friendliness. However, some problems related to rate capability, structure stability, and safety still hamper their commercial application. In this Review, beginning with the relationships between the physicochemical properties and electrochemical performance, the underlying mechanisms of the capacity/voltage fade and the unstable structure of Ni‐rich cathodes are deeply analyzed. Furthermore, the recent research progress of Ni‐rich oxide cathode materials through element doping, surface modification, and structure tuning are summarized. Finally, this review concludes by discussing new insights to expand the field of Ni‐rich oxides and promote practical applications.

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Section: Ni‐rich Ternary Cathode Materialsmentioning

confidence: 99%

Nickel‐Rich Layered Cathode Materials for Lithium‐Ion Batteries

Qiu

Yang

et al. 2021

Chemistry A European J

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“…Figure 7 displays the EIS results of the three electrodes after 50 cycles at 0.2 C, which can be studied the magnitude of the impedance of Li + during insertion and extraction [31,32]. The intercept of the Z axis corresponds to the ohmic resistance (Rs) of electrolyte between the working electrode and the reference electrode, the semicircle in the high frequency range is associated with cathode interface film resistance (R SEI ), the second semicircle in the middle frequency is assigned to the charge transfer resistance (R ct ), and a oblique straight line in the low frequency is assigned to the Li + diffusion coefficient W z , the smaller the slope, the greater the impedance [33][34][35][36][37]. The impedance parameters simulated using the equivalent circuit are listed in Table 2, which were simulated by Zview software, it can be clearly seen that the minimum and maximum of resistance is G-622 and C-622, respectively, which can be determinate by the structural stability of C-622 is worst, the initial particle size of S-622 is largest, the structural stability of G-622 is best, among the three electrodes.…”

Section: Thermal Analysis Of the Self-propagating Combustion Productsmentioning

confidence: 99%

The effect of chelating agent on synthesis and electrochemical properties of LiNi0.6Co0.2Mn0.2O2

Zhang

et al. 2020

SN Appl. Sci.

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Ni-rich cathode material is one of the most promising material for Li-ion batteries (LIBs) in portable power and electric vehicles. However, how to recycle waste LIBs cathode materials is very important for environmental protection and resource utilization. LiNi 0.6 Co 0.2 Mn 0.2 O 2 cathode materials were prepared by sol-gel combustion method Using waste LIBs cathode materials as raw materials. The effect of different gels on the crystal structure and morphology of LiNi 0.6 Co 0.2 Mn 0.2 O 2 were studied by X-ray diffraction and scanning electron macroscopy. The electrochemical properties were investigated by charge-discharge testing, cyclic voltammetry and electrochemical impedance spectroscopy. The results showed that the samples contained some residual C and primary crystals have been formed during combustion stage. When glucose was used as gel regent, the sample has the good electrochemical properties with the initial discharge capacity of 176.9 mAh g −1 , initial coulombic efficiency of 87.0% and discharge capacity retention rate of 95.8% after 50 cycles at 0.2 C rate. The results showed that the less the cation mixing, the more complete of hexagonal crystal structure, which induced the decrease of impedance resistance and good reversibility of redox reaction.

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“…Among the various cathode materials, layered transition metal oxides LiNi 1−x−y Mn x Co y O 2 (NMC) have attracted wide attention. Compared with LiCoO 2 , LiMn 2 O 4 , and LiNiO 2 , NMC materials have excellent electrochemical properties, such as high energy density, high reversibility, good environmental compatibility, and an excellent charge-discharge rate [5][6][7][8][9][10][11][12][13]. In previous studies, these electrochemical properties of NMC materials have been investigated for different transition metal (TM) ratios, including LiNi 1/3 Mn 1/3 Co 1/3 O 2 (333) [8], LiNi 0.4 Mn 0.4 Co 0.2 O 2 (442) [9], LiNi 0.5 Mn 0.3 Co 0.2 O 2 (532) [10], LiNi 0.6 Mn 0.2 Co 0.2 O 2 (622) [11], LiNi 0.7 Mn 0.15 Co 0.15 O 2 (71515), [12] and LiNi 0.8 Mn 0.1 Co 0.1 O 2 (811) [13].…”

Section: Introductionmentioning

confidence: 99%

“…Compared with LiCoO 2 , LiMn 2 O 4 , and LiNiO 2 , NMC materials have excellent electrochemical properties, such as high energy density, high reversibility, good environmental compatibility, and an excellent charge-discharge rate [5][6][7][8][9][10][11][12][13]. In previous studies, these electrochemical properties of NMC materials have been investigated for different transition metal (TM) ratios, including LiNi 1/3 Mn 1/3 Co 1/3 O 2 (333) [8], LiNi 0.4 Mn 0.4 Co 0.2 O 2 (442) [9], LiNi 0.5 Mn 0.3 Co 0.2 O 2 (532) [10], LiNi 0.6 Mn 0.2 Co 0.2 O 2 (622) [11], LiNi 0.7 Mn 0.15 Co 0.15 O 2 (71515), [12] and LiNi 0.8 Mn 0.1 Co 0.1 O 2 (811) [13]. Among these electrochemical properties, the Li-ion diffusion coefficient, which is an important parameter for LIB cathode materials, directly determines the charge and discharge rate capability [14].…”

Section: Introductionmentioning

confidence: 99%

Effect of Ni2+ on Lithium-Ion Diffusion in Layered LiNi1−x−yMnxCoyO2 Materials

Yuan-yuan

Huang

et al. 2021

Crystals

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LiNi1−x−yMnxCoyO2 materials are a typical class of layered cathode materials with excellent electrochemical performance in lithium-ion batteries. Molecular dynamics simulations are performed for LiNi1−x−yMnxCoyO2 materials with different transition metal ratios. The Li/Ni exchange ratio, ratio of anti-site Ni2+ to total Ni2+, and diffusion coefficient of Li ions in these materials are calculated. The results show that the Li-ion diffusion coefficient strongly depends on the ratio of anti-site Ni2+ to total Ni2+ because their variation tendencies are similar. In addition, the local coordination structure of the Li/Ni anti-site is analyzed.

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Chemical coupling constructs amorphous silica modified LiNi0.6Co0.2Mn0.2O2 cathode materials and its electrochemical performances

Cited by 60 publications

References 50 publications

Nickel‐Rich Layered Cathode Materials for Lithium‐Ion Batteries

Nickel‐Rich Layered Cathode Materials for Lithium‐Ion Batteries

The effect of chelating agent on synthesis and electrochemical properties of LiNi0.6Co0.2Mn0.2O2

Effect of Ni2+ on Lithium-Ion Diffusion in Layered LiNi1−x−yMnxCoyO2 Materials

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