Effect of titanium addition as nickel oxide formation inhibitor in nickel-rich cathode material for lithium-ion batteries

Nurpeissova, Arailym; Choi, Moon Ho; Kim, Jik-Soo; Myung, Seung‐Taek; Kim, Sung‐Soo; Sun, Yang‐Kook

doi:10.1016/j.jpowsour.2015.09.016

Cited by 56 publications

(32 citation statements)

References 37 publications

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“…The NCM sample exhibits a broad exothermal peak around 228.58 °C with a heat generation of 1141 J g −1 , while the LT1 sample shifts to a higher temperature (243.97 °C) and overall heat generation was reduced to 655.8 J g −1 . The six oxygen atoms around the substituted Ni and doped Ti are shown in Table S6 (Supporting Information), it clearly shows that the Ti doping share more electrons to the oxygen around, which agrees well with the charge difference analysis in Figure d, suggesting stronger bond strength of Ti–O than that of Ni–O . Owing to the stable structure, the modified sample shows an enhanced thermal stability at elevated temperature.…”

Section: Resultssupporting

confidence: 80%

“…For cation substitution, varieties of dopant ions have been employed to enhance the structural stability of Ni‐rich materials . Specifically, Ti substitution has been proven effective in improving the cyclic stability by reducing the cation mixing of Li + /Ni 2+ and alleviating the appearance of cracks in secondary particles induced by volumetric deformation . However, the Ti‐doped cathodes are still directly exposed to the electrolyte.…”

Section: Introductionmentioning

confidence: 99%

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Simultaneously Dual Modification of Ni‐Rich Layered Oxide Cathode for High‐Energy Lithium‐Ion Batteries

Yang

et al. 2019

Adv Funct Materials

484

274

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A critical challenge in the commercialization of layer-structured Ni-rich materials is the fast capacity drop and voltage fading due to the interfacial instability and bulk structural degradation of the cathodes during battery operation. Herein, with the guidance of theoretical calculations of migration energy difference between La and Ti from the surface to the inside of LiNi 0.8 Co 0.1 Mn 0.1 O 2 , for the first time, Ti-doped and La 4 NiLiO 8 -coated LiNi 0.8 Co 0.1 Mn 0.1 O 2 cathodes are rationally designed and prepared, via a simple and convenient dual-modification strategy of synchronous synthesis and in situ modification. Impressively, the dual modified materials show remarkably improved electrochemical performance and largely suppressed voltage fading, even under exertive operational conditions at elevated temperature and under extended cutoff voltage. Further studies reveal that the nanoscale structural degradation on material surfaces and the appearance of intergranular cracks associated with the inconsistent evolution of structural degradation at the particle level can be effectively suppressed by the synergetic effect of the conductive La 4 NiLiO 8 coating layer and the strong TiO bond. The present work demonstrates that our strategy can simultaneously address the two issues with respect to interfacial instability and bulk structural degradation, and it represents a significant progress in the development of advanced cathode materials for high-performance lithium-ion batteries.

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Section: Resultssupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Simultaneously Dual Modification of Ni‐Rich Layered Oxide Cathode for High‐Energy Lithium‐Ion Batteries

Yang

et al. 2019

Adv Funct Materials

484

274

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“…(iii.) Enhancing the capacity and electronic conductivity by coating the electroactive materials; TiO 2 , AlF 3 , Al 2 O 3 , SiO 2 , and AlPO 4 have been suggested as suitable coating materials for the layered cathodes [7][8][9][10][11][12][13][14][15][16]. The coating material mainly acts as an isolation layer to prevent side reactions and reduce the pH, which improved thermal stability and cycling stability of the cathode materials.…”

Section: Introductionmentioning

confidence: 99%

Improving the Electrochemical Performance of LiNi0.80Co0.15Al0.05O2 in Lithium Ion Batteries by LiAlO2 Surface Modification

Song¹,

Wang²,

Peng³

et al. 2018

Applied Sciences

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“…[9,10] The irreversible structural transformations of surface and bulk phase can reduce active-mass/lithium and increase the interface resistance. [11] To overcome the performance degradation of nickel-rich materials, several strategies including lattice doping (Na + , Mg 2 + , Al 3 + , Ti 4 + , Zr 4 + , Mo 6 + , W 6 + ), [12][13][14][15][16][17][18] surface coating (Graphene, ZrO 2 , CeO 2 , MoS 2 , LiZr (PO 4 ) 3 ), [19][20][21][22][23] and structure design [24,25] have been proposed and demonstrated. Among these approaches, fabricating a cation mixing pillar layer has recently been considered as a valid approach to obtain a stable surface structure.…”

Section: Introductionmentioning

confidence: 99%

New Insight into the Role of Mn Doping on the Bulk Structure Stability and Interfacial Stability of Ni‐Rich Layered Oxide

Zhuang

Gao

et al. 2020

ChemNanoMat

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Nickel‐rich layered oxides have developed into appealing cathode materials for lithium‐ion batteries in recent years for the sake of high energy density and low cost, but they suffer from severe capacity deterioration during long‐term cycling. Herein, Mn‐doped nickel‐rich Li(Ni0.88Co0.09Al0.03)1‐δMnδO2 (δ=0, 0.01, 0.02) cathode materials with a nanoscale NixMn1−xO‐type pillar layer are synthesized using a facile high‐shear dry mixing and high‐temperature calcination process in this study. The as‐fabricated M0.01−NCA electrode with a NixMn1−xO‐type layer about 20 nm exhibits excellent cycle performance compared with the pristine in coin‐cells and in pouch cells (the long‐term cycle number is four times that of the pristine). Detailed investigation of the fading mechanism is performed by HRTEM, ex‐situ XRD, XPS et al. The enhanced performance is directly related to the synergetic effects of bulk inactive Mn4+ doping and the increased nanoscale NixMn1−xO‐type pillar layer. The Mn dopants stabilize the lattice structure thus decreasing the microcracks, and the pillar layer protects the cathode from parasitic reactions with electrolytes during long‐term cycling. This work gives a new insight into the role of Mn doping on the enhanced structure of nickel‐rich layered oxides.

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Effect of titanium addition as nickel oxide formation inhibitor in nickel-rich cathode material for lithium-ion batteries

Cited by 56 publications

References 37 publications

Simultaneously Dual Modification of Ni‐Rich Layered Oxide Cathode for High‐Energy Lithium‐Ion Batteries

Simultaneously Dual Modification of Ni‐Rich Layered Oxide Cathode for High‐Energy Lithium‐Ion Batteries

Improving the Electrochemical Performance of LiNi0.80Co0.15Al0.05O2 in Lithium Ion Batteries by LiAlO2 Surface Modification

New Insight into the Role of Mn Doping on the Bulk Structure Stability and Interfacial Stability of Ni‐Rich Layered Oxide

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