Nb-doping in LiNi0.8Co0.1Mn0.1O2 cathode material: Effect on the cycling stability and voltage decay at high rates

Lei, Yike; Ai, Jinjin; Yang, Shuai; Lai, Chunyan; Xu, Qing

doi:10.1016/j.jtice.2019.02.006

Cited by 44 publications

(23 citation statements)

References 45 publications

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“…Therefore, it is very necessary to develop clean, safe, and renewable energy. [1][2][3] Lithium-ion batteries, with the advantages of cost, high operating voltage, and high discharge capacity, have been paid great attention. [4][5][6] As an indispensable and important part of lithium-ion batteries, cathode materials are also closely concerned by many researchers, hoping to provide cathode materials with excellent performance to meet the requirement from the customers.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, environmental and energy issues have increasingly become the focus of attention of the whole society. Therefore, it is very necessary to develop clean, safe, and renewable energy 1‐3 . Lithium‐ion batteries, with the advantages of cost, high operating voltage, and high discharge capacity, have been paid great attention 4‐6 .…”

Section: Introductionmentioning

confidence: 99%

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Feasible synthesis of NCM811 cathodes with controllable Li/Ni cationic mixing for enhanced electrochemical performance via a nano grinding assisted solid‐state approach

Dong

Zhang

et al. 2020

Int J Energy Res

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This paper reports a feasible approach to offer LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) layered cathode materials with enhanced lattice ordering and improved electrochemical performance through a nano grinding assisted solid-state reaction. Different from the commercial precursor method, oxide raw materials, NiO, CoO and MnO 2 , rather than the hydroxides, was employed as the starting raw material which was milled into submicron size, pressed into pellets and crushed into granular powder. After calcination under oxygen atmosphere under different temperature, such a simple approach provides layered cathode materials with controllable Li/Ni disordering. Powder XRD results show that when sintered at 800 C, a largest I(003)/I (104) ratio is observed, indicating that the cationic disordering is the lowest, as been confirmed by the XRD refinement data, showing that only 1.08% Ni is misplaced at 3b site. For the electrochemical test, the pNCM800 sample presented an initial specific discharge capacity of 203 mAh/g at 0.1C, together with a capacity retention of 91.77% after 100 cycles at 0.5C. Compared to the value of the sample obtained at normal routine (163.8 mAh/g and 74.85%), the improvement in electrochemical behavior is obvious. Furthermore, the rate performance is also improved, with a specific capacity of 144.1 mAh/g even at 5C rate. The reason for such enhancement could be ascribed to the better kinetic process with low interfacial resistance and fast Li diffusion contributed from the promoted lattice ordering. The results obtained in the experiments greatly indicate the significance of the approach in controlling the Li/Ni disordering, and thus offer an alternative routine for the mass production of layered cathode materials besides the so-called precursor method.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Feasible synthesis of NCM811 cathodes with controllable Li/Ni cationic mixing for enhanced electrochemical performance via a nano grinding assisted solid‐state approach

Dong

Zhang

et al. 2020

Int J Energy Res

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“…Although Li + batteries and their compositions, coatings, and dopants continue to be extensively explored, they must be assessed in terms of their practicality toward industrial-scale usage in large-scale energy storage systems. Although elements such as Nb, [226] Y, [229] and Ta [228] improve the electrochemical c) the presence of microsphere and microcubic morphologies within the bulk material. [252] d) TEM image of K 0.48 Ni 0.2 Co 0.2 Mn 0.6 O 2 .…”

Section: Discussionmentioning

confidence: 99%

“…[151] Furthermore, Lei et al used Nb-doping to facilitate an increase of the upper cut-off voltage to 4.6 V, resulting in a 10.7% increase in capacity retention. [226] At a low charge rate of 0.5C, the capacity retention of a Modoped LiNi 0.5 Co 0.2 Mn 0.3 O 2 was 152 mAh g −1 , with a capacity retention of 97.1% over 50 cycles. [227] Even at a higher charge rate of 8C, a capacity of 125 mAh g −1 is achieved.…”

Section: Ternary Metal Oxides and Beyondmentioning

confidence: 94%

Electrochemical Overview: A Summary of ACo_xMn_yNi_zO₂ and Metal Oxides as Versatile Cathode Materials for Metal‐Ion Batteries

Pimlott

Street

Down

et al. 2021

Adv Funct Materials

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Early LiCoO 2 research provided the basis for the tremendous commercial success of Li + batteries since their invention in the early 1990s. Today, LiN-iMnCoO 2 (Li-NMC) is one of the most widely used batteries in the rapidly evolving electronic vehicle industry. Li-NMC batteries continue to receive significant interest as research efforts aim to partially, or entirely, replace the use of scarcely available and toxic Co with elemental doping to form binary, ternary, and quaternary layered oxides. Furthermore, safety concerns and rising uncertainty for the future of Li supplies have resulted in growing curiosity toward non-Li + rechargeable batteries such as Na + and K + . Unfortunately, the success of Li + host materials does not always directly transfer to Na + and K + batteries due to the difficulty of reversibly intercalating larger ions without irreparably distorting the host structure. Consequently, this report provides an overview of the Li-based materials surrounding the success of commercial Li-NMC and the subsequent progress of their lesser studied Na and K counterparts. The challenges for current cathode materials are highlighted, and the opportunities for progression are suggested. The summary presented in this review can be consulted to steer new and unique research avenues for layered oxide materials as metal-ion battery cathodes.

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“…As one of the widely used commercial materials, LiNi 0.8 Mn 0.1 Co 0.1 O 2 (NCM811) has many disadvantages, such as poor cycle performance and bad thermal stability due to structural instability [15,16]. At present, these problems are solved by surface coating (SiO 2 [17], TiO 2 [18], Li 3 PO 4 [19], Al 2 O 3 [20], LiF [21], ZrO 2 [22], LiAlO 2 [23], MoS 2 [24], CoPO 4 [25], FePO 4 [26]) and element doping (Na [27], F [28], Zr [29], Nb [30], W [31], Ca [32], Al [33]), which promises to improve the thermal stability and enhance the cycle stability.…”

Section: Introductionmentioning

confidence: 99%

Improving cycle stability of Ni-rich LiNi0.8Mn0.1Co0.1O2 cathode materials by Li4Ti5O12 coating

Zha

Song

et al. 2021

Ionics

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The surface of LiNi 0.8 Mn 0.1 Co 0.1 O 2 (NCM811) cathode is coated with Li 4 Ti 5 O 12 with a thickness of 10-12 nm by the solvent evaporated calcination method to generate T2-NCM811 cathode, which significantly reduces the particle cracking. The cyclic stability of the T2-NCM811 cathode is greatly improved by particle-stabilized structure. After 500 cycles between 2.8 and 4.3 V, its capacity retention rate is 83%, which is higher than that of NCM811 (67%). This cyclic stability is attributed to the inhibition of secondary crystal cracking by the coating, which the structure of the particles is kept stable in a long period and protects the internal particles from harmful electrolytes. The discharge capacity of NCM811 cathode at 10C is 92.6 mAh g −1 , while that for T2-NCM811 cathode raises to 111.5 mAh g −1 . This is because a certain amount of Ti 3+ /Ti 4+ doping to the surface of NCM811 reduces Li/Ni mixing and increases the lattice parameters on the surface of material; this helps to accelerate the electronic conductivity and enhance the transport of Li + .

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Nb-doping in LiNi0.8Co0.1Mn0.1O2 cathode material: Effect on the cycling stability and voltage decay at high rates

Cited by 44 publications

References 45 publications

Feasible synthesis of NCM811 cathodes with controllable Li/Ni cationic mixing for enhanced electrochemical performance via a nano grinding assisted solid‐state approach

Feasible synthesis of NCM811 cathodes with controllable Li/Ni cationic mixing for enhanced electrochemical performance via a nano grinding assisted solid‐state approach

Electrochemical Overview: A Summary of ACo_xMn_yNi_zO₂ and Metal Oxides as Versatile Cathode Materials for Metal‐Ion Batteries

Improving cycle stability of Ni-rich LiNi0.8Mn0.1Co0.1O2 cathode materials by Li4Ti5O12 coating

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Nb-doping in LiNi0.8Co0.1Mn0.1O2 cathode material: Effect on the cycling stability and voltage decay at high rates

Cited by 44 publications

References 45 publications

Feasible synthesis of NCM811 cathodes with controllable Li/Ni cationic mixing for enhanced electrochemical performance via a nano grinding assisted solid‐state approach

Feasible synthesis of NCM811 cathodes with controllable Li/Ni cationic mixing for enhanced electrochemical performance via a nano grinding assisted solid‐state approach

Electrochemical Overview: A Summary of ACoxMnyNizO2 and Metal Oxides as Versatile Cathode Materials for Metal‐Ion Batteries

Improving cycle stability of Ni-rich LiNi0.8Mn0.1Co0.1O2 cathode materials by Li4Ti5O12 coating

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Product

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Electrochemical Overview: A Summary of ACo_xMn_yNi_zO₂ and Metal Oxides as Versatile Cathode Materials for Metal‐Ion Batteries