Author Correction: Heuristic solution for achieving long-term cycle stability for Ni-rich layered cathodes at full depth of discharge

Kim, Un Hyuck; Park, Geon Tae; Son, Byoung Ki; Nam, Gyeong Won; Liu, Jun; Kuo, Liang Yin; Kaghazchi, Payam; Yoon, Chong Seung; Sun, Yang Kook

doi:10.1038/s41560-020-00760-y

Cited by 4 publications

(12 citation statements)

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“…Various doping elements, such as Sb, W, Nb, and Mo, can modify the surface energy of the (003) plane. 33 The energetic favor for the (003) plane promotes the maximization of the (003) facet, endowing the formation of elongated particles enclosed on the sides by the (003) plane. To explicitly investigate the effect of element addition on the microstructure, the morphologies of the cathodes modified by single Ti or B are obtained (Figure S6).…”

Section: Resultssupporting

confidence: 81%

“…38,39 However, the occupation of B on tetrahedral interstices in TM and Li layers has larger effects because of the smaller ionic radius of B (r = 0.41 Å). 33,40 In addition, the content of Li + /Ni 2+ mixed in NCM92-TB1 and NCM92-TB2 is slightly higher than that in NCM92. The higher the amount of titanium is, the higher the Li + /Ni 2+ mixing will be.…”

Section: Resultsmentioning

confidence: 80%

“…49 For NCM92, the intensity of H2-H3 oxidation peak decreases continually, indicating the poor reversibility of H2-H3 phase transition and structure degradation, which is consistent with aggravated capacity fading. 33 For NCM92-TB2, the intensity of the H2-H3 oxidation peak decreases slowly from 1st to 25th cycles, while that peak almost disappears at the 50th cycle. However, for NCM92-TB1, the intensity of the H2-H3 phase transition decreases more slowly, and the peak can be still found at the 50th cycle.…”

Section: Resultsmentioning

confidence: 99%

“…30−32 The strategy of using radially assembled primary particles has been confirmed by a W/Ta/B-doped cathode to improve the cycling stability. 18,33,34 Thus, microstructure engineering combined with protective coatings and composition modification would be a long-sought method for maximizing the cycling stability without harnessing the high capacity of Ni-rich cathodes. However, as recently reported results of multidoped (Ga, B) LiNi 0.885 Co 0.1 Al 0.015 O 2 by Sun et al, 35 the simultaneous incorporation of improper dopants would sacrifice the development of a radial crystallographic texture endowed by element doping induced surface energy modification.…”

Section: Introductionmentioning

confidence: 99%

“…Since the degradation of cycling performance originates from the microcracks, the effective approaches enhancing the structural integrity should at least increase the uniformity of strain distribution by crystallographic text. Because the internal strain occurs mainly in the c direction, the crystallographic texture with radially oriented primary crystalline grains can enable the cathode to uniformly contract and expand, alleviating the non-uniform strain distribution and intergranular microcracking during cycling. − The strategy of using radially assembled primary particles has been confirmed by a W/Ta/B-doped cathode to improve the cycling stability. ,, Thus, microstructure engineering combined with protective coatings and composition modification would be a long-sought method for maximizing the cycling stability without harnessing the high capacity of Ni-rich cathodes.…”

Section: Introductionmentioning

confidence: 99%

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Synergistic Effect of Microstructure Engineering and Local Crystal Structure Tuning to Improve the Cycling Stability of Ni-Rich Cathodes

Zhu

Cao

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

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Ultrahigh Ni-rich layered oxides have been regarded as one of the most promising cathode candidates. However, cycling instability induced by interfacial reactions and irreversible H2-H3 lattice distortion is yet to be demonstrated by an effective strategy that could construct a stable grain interface and microstructure. Here, Ni-rich cathode LiNi 0.92 Co 0.05 Mn 0.03 O 2 is modified by B and Ti to realize the synchronous regulation of a microstructure and the oxygen framework robustness. Compared with the large equiaxed crystalline grains for the pristine cathode, highly elongated grains with a strong radially oriented crystallographic texture in which the (003) facet is maximized are produced for Ti and B-modified Li-Ni 0.92 Co 0.05 Mn 0.03 O 2 . With the suppressed H2-H3 phase transition and cation mixing provided by radially oriented grains and turned local crystal oxygen framework robustness during cycling, the co-modified cathode exhibits enhanced Li + diffusion kinetics and a capacity retention of 78.3% after 100 cycles, which outperformed the 38.5% for the pristine cathode. The improved cycling performance suggests the significance of the turned microstructure and local crystal structure in suppressing internal strain and crystal structure degradation. The synchronous realization of microstructure engineering and local crystal structure turning by optimal element combination would provide a heuristic solution for the construction of high perform Ni-rich cathodes.

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Section: Resultssupporting

confidence: 81%

Section: Resultsmentioning

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Synergistic Effect of Microstructure Engineering and Local Crystal Structure Tuning to Improve the Cycling Stability of Ni-Rich Cathodes

Zhu

Cao

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

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Isotropic Microstrain Relaxation in Ni-Rich Cathodes for Long Cycling Lithium Ion Batteries

Wang,

Wei,

Han

et al. 2023

ACS Nano

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Developing isotropic-dominated microstrain relaxation is a vital step toward the enhancement of cyclic performance and thermal stability for high-energydensity Ni-rich cathodes. Here, a microstructure engineering strategy is employed for synthesizing the elongated primary particles radially aligned Ni-rich cathodes only by regulating the precipitation rates of cations and the distributions of flow field. The asobtained cathode also exhibits an enlarged lattice distance and highly exposed (003) plane. The high aspect ratio and favorable atomic arrangement of primary particles not only enable isotropic strain relaxation for effectively suppressing microcrack formation and propagation, but also facilitate Li-ion diffusion with greatly reduced Li/Ni mixing. Consequently, it shows obvious superiority in the high-rate, long-cycle life, and thermal stability compared with the conventional counterparts. After modification, an exceptionally long life is achieved with a capacity retention of 90.1% at 1C and 84.3% at 5C after 1500 cycles within 3.0−4.3 V in a 1.5-Ah pouch cell. This work offers a universal strategy to achieve isotropic strain distribution for conveniently enhancing the durability of Ni-rich cathodes.

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Architecting Robust Full Concentration Gradient NCM712 Cathodes for High-Energy Li-Ion Batteries

Zhao,

Sedlacik,

Saha

et al. 2024

ACS Sustainable Chem. Eng.

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Full concentration gradient ternary oxide cathodes, with a Ni-rich core and a Mn-rich surface, have been identified to effectively enhance their interfacial and structural stability for longlife Li-ion batteries. Nevertheless, a big challenge is to address the degradient effect during high-temperature lithiation. Herein, we demonstrate the synthesis of gradient LiNi 0.70 Co 0.10 Mn 0.20 O 2 cathodes by F-doping and intergranular Li x W y O z coating. The coating layer served as a physical barrier to mitigate the interdiffusion of transition metal ions during grain boundary merging. Meanwhile, the doped F ions, occupying the O sites, can further restrict ion transfer to inner primary particles by the formation of extremely strong M−F bonds. Accordingly, the resultant gradient cathodes deliver a high reversible capacity of 211.2 mAh g −1 at 0.1C in coin-type half-cells. A superior cycling stability is achieved with a high capacity retention of 93.0% at 1C after 500 cycles within 2.7−4.5 V in pouch-type full cells. This work provides a reliable technical route to obtain high-energy Li-ion batteries by the design of high-voltage concentration gradient Ni-rich cathodes.

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Author Correction: Heuristic solution for achieving long-term cycle stability for Ni-rich layered cathodes at full depth of discharge

Cited by 4 publications

References 0 publications

Synergistic Effect of Microstructure Engineering and Local Crystal Structure Tuning to Improve the Cycling Stability of Ni-Rich Cathodes

Synergistic Effect of Microstructure Engineering and Local Crystal Structure Tuning to Improve the Cycling Stability of Ni-Rich Cathodes

Isotropic Microstrain Relaxation in Ni-Rich Cathodes for Long Cycling Lithium Ion Batteries

Architecting Robust Full Concentration Gradient NCM712 Cathodes for High-Energy Li-Ion Batteries

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