The effect of cobalt doping on the morphology and electrochemical performance of high-voltage spinel LiNi0.5Mn1.5O4 cathode material

Mao, Jing; Ma, Mengze; Li, Panpan; Hu, Junhua; Shao, Guosheng; Battaglia, Vince; Dai, Kehua; Liu, Gao

doi:10.1016/j.ssi.2016.05.008

Cited by 34 publications

(15 citation statements)

References 44 publications

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“…Many metallic elements have been investigated to dope LNMO materials, including transition‐metal ions, such as Ti 4+ , [ 60 ] V 5+ , [ 61 ] Cr 3+ , [ 62 ] Fe 3+ , [ 63 ] Co 3+ , [ 64 ] Cu 2+ , [ 65 ] Zn 2+ , [ 66 ] Zr 4+ , [ 67 ] Nb 5+ , [ 68 ] Mo 6+ , [ 69 ] Ru 4+ , [ 70 ] and Sm 3+ , [ 71 ] and non‐transition‐metal ions, such as Na + , [ 72 ] Mg 2+ , [ 73 ] Sr 2+ , [ 74 ] Al 3+ , [ 75 ] and Ga 3+ . [ 76 ]…”

Section: Approaches To Improve the Cycling Stability Of Lnmomentioning

confidence: 99%

Section: Approaches To Improve the Cycling Stability Of Lnmomentioning

confidence: 99%

“…found that Co doping could reduce the particle size of LNMO, which could increase the Li‐diffusion coefficient and enhance the cycling stability of LNMO (Figure 7c). [ 64 ]…”

Section: Approaches To Improve the Cycling Stability Of Lnmomentioning

confidence: 99%

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Advances and Prospects of High‐Voltage Spinel Cathodes for Lithium‐Based Batteries

Manthiram

2021

Small Methods

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Insertion compounds have been dominating the cathodes in commercial lithium‐ion batteries. In contrast to layered oxides and polyanion compounds, the development of spinel‐structured cathodes is a little behind. Owing to a series of advantageous properties, such as high operating voltage (≈4.7 V), high capacity (≈135 mAh g−1), low environmental impact, and low fabrication cost, the high‐voltage spinel LiNi0.5Mn1.5O4 represents a high‐power cathode for advancing high‐energy‐density Li+‐ion batteries. However, the wide application and commercialization of this cathode are hampered by its poor cycling performance. Recent progress in both the fundamental understanding of the degradation mechanism and the exploration of strategies to enhance the cycling stability of high‐voltage spinel cathodes have drawn continuous attention toward this promising insertion cathode. In this review article, the structure–property correlations and the failure mode of high‐voltage spinel cathodes are first discussed. Then, the recent advances in mitigating the cycling stability issue of high‐voltage spinel cathodes are summarized, including the various approaches of structural design, doping, surface coating, and electrolyte modification. Finally, future perspectives and research directions are put forward, aiming at providing insightful information for the development of practical high‐voltage spinel cathodes.

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Section: Approaches To Improve the Cycling Stability Of Lnmomentioning

confidence: 99%

Section: Approaches To Improve the Cycling Stability Of Lnmomentioning

confidence: 99%

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Advances and Prospects of High‐Voltage Spinel Cathodes for Lithium‐Based Batteries

Manthiram

2021

Small Methods

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“…Previously, we reported a polyvinylpyrrolidone (PVP)-combustion method. With this method, we prepared some TMO materials for Li-ion and Na-ion batteries with high rate capability and cycling stability [26][27][28][29][30] . PVP can fix metal ion on the macromolecular chain via chelation, so the precursor is very uniform which benefits good electrochemical performance.…”

Section: P2-type Na 2/3 Ni 1/3 Mn 2/3 O 2 Is An Air-stable Compound Bmentioning

confidence: 99%

P2-type Na_2/3Ni_1/3Mn_2/3O₂ Cathode Material with Excellent Rate and Cycling Performance for Sodium-Ion Batteries

Mao

Liu

et al. 2019

J. Electrochem. Soc.

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P2-type Na 2/3 Ni 1/3 Mn 2/3 O 2 is an air-stable cathode material for sodium-ion batteries. However, it suffers irreversible P2-O2 phase transition in 4.2-V plateau and shows poor cycling stability and rate capability within this plateau. To evaluate the practicability of this material in 2.3-4.1 V voltage range, single-crystal micro-sized P2-type Na 2/3 Ni 1/3 Mn 2/3 O 2 with high rate capability and cycling stability is synthesized via polyvinylpyrrolidone (PVP)-combustion method. The electrochemical performance is evaluated by galvanostatic charge-discharge tests. The kinetics of Na + intercalation/ deintercalation is studied detailly with potential intermittent titration technique (PITT), galvanostatic intermittent titration technique (GITT) and cyclic voltammetry (CV). The discharge capacity at 0.1 C in 2.3-4.1 V is 87.6 mAh g-1. It can deliver 91.5% capacity at 40 C rate and keep 89% after 650 cycles at 5C. The calculated theoretical energy density of full cell with hard carbon anode is 210 Wh kg-1. The moderate energy density associated with high power density and long cycle life is acceptable for load adjustment of new-energy power, showing the prospect of practical application.

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“…Co doping is an effective way to eliminate the Li x Ni 1– x O impurity and provide a more stable spinel structure with enhanced disorder of the cations in the octahedral sites. − It has also been reported that the amount of Co doping can significantly affect the electrochemical performance. ,,, Co-doped LiNi x Co y Mn z O 4 cathode materials exhibit excellent electrochemical performances when the amount of Co doping is appropriate ( y ≈ 0.1). ,, However, the electrochemical performances of Co-doped LiNi x Co y Mn z O 4 are not significantly different from those of LiN i0.5 Mn 1.5 O 4 when the amount of Co doping is reduce to a low degree ( y ≤ 0.05). , Therefore, in this study, spherical agglomerations of octahedral single-crystalline LiNi 0.5 Co 4 x Mn 1.5–3 x O 4 cathode materials ( x = 0.02 and 0.03) with exposed planes were prepared by hydroxide coprecipitation in an 8-L continuous reaction device (Figure ) using a combinational postannealing method. The electrochemical performances of conventional spherical LiNi 0.5 Mn 1.5 O 4 particles and spherical agglomerations of octahedral Co-doped LiNi 0.5 Co 4 x Mn 1.5–3 x O 4 cathode materials prepared by the same method were compared.…”

Section: Introductionmentioning

confidence: 99%

Spherical Agglomeration of Octahedral LiNi_0.5Co_4xMn_1.5–3xO₄ Cathode Material Prepared by a Continuous Coprecipitation Method for 5 V Lithium-Ion Batteries

Yang

Zhang

et al. 2016

Ind. Eng. Chem. Res.

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Octahedral LiNi 0.5 Mn 1.5 O 4 with excellent electrochemical properties prepared by the solvothermal or sol−gel method under harsh conditions is expensive. Therefore, preparing octahedral LiNi 0.5 Mn 1.5 O 4 with good granularity by a more cost-effective and large-scale method is significant for its industrial applications. In this study, spherical agglomerations of octahedral Co-doped LiNi 0.5 Co 4x Mn 1.5−3x O 4 with micrometer sizes were synthesized by a continuous coprecipitation process. Compared to conventional spherical LiNi 0.5 Mn 1.5 O 4 , the spherical agglomeration of octahedral LiNi 0.5 Co 0.08 Mn 1.44 O 4 with a larger specific surface area and pore volume was well crystallized without any impurities and exhibited a high discharge capacity of about 110 mAh•g −1 at a rate of 2C and a high reversible capacity of 99.9% after the rate test (in which rates of 0.1C, 0.5C, 1C, and 2C were tested sequentially for 10 cycles). Remarkably, the discharge capacity of the prepared LiNi 0.5 Co 0.08 Mn 1.46 O 4 exhibited a negligible decrement after 100 cycles at 1C, displaying great potential industrial application for 5 V lithium-ion batteries.

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The effect of cobalt doping on the morphology and electrochemical performance of high-voltage spinel LiNi0.5Mn1.5O4 cathode material

Cited by 34 publications

References 44 publications

Advances and Prospects of High‐Voltage Spinel Cathodes for Lithium‐Based Batteries

Advances and Prospects of High‐Voltage Spinel Cathodes for Lithium‐Based Batteries

P2-type Na_2/3Ni_1/3Mn_2/3O₂ Cathode Material with Excellent Rate and Cycling Performance for Sodium-Ion Batteries

Spherical Agglomeration of Octahedral LiNi_0.5Co_4xMn_1.5–3xO₄ Cathode Material Prepared by a Continuous Coprecipitation Method for 5 V Lithium-Ion Batteries

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The effect of cobalt doping on the morphology and electrochemical performance of high-voltage spinel LiNi0.5Mn1.5O4 cathode material

Cited by 34 publications

References 44 publications

Advances and Prospects of High‐Voltage Spinel Cathodes for Lithium‐Based Batteries

Advances and Prospects of High‐Voltage Spinel Cathodes for Lithium‐Based Batteries

P2-type Na2/3Ni1/3Mn2/3O2 Cathode Material with Excellent Rate and Cycling Performance for Sodium-Ion Batteries

Spherical Agglomeration of Octahedral LiNi0.5Co4xMn1.5–3xO4 Cathode Material Prepared by a Continuous Coprecipitation Method for 5 V Lithium-Ion Batteries

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Product

Resources

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P2-type Na_2/3Ni_1/3Mn_2/3O₂ Cathode Material with Excellent Rate and Cycling Performance for Sodium-Ion Batteries

Spherical Agglomeration of Octahedral LiNi_0.5Co_4xMn_1.5–3xO₄ Cathode Material Prepared by a Continuous Coprecipitation Method for 5 V Lithium-Ion Batteries