High-nickel and cobalt-free layered LiNi0.90Mn0.06Al0.04O2 cathode for lithium-ion batteries

Xi, Ruheng; Zhang, Jianru; Lan, Ziwei; Yuan, Yongxiang; Kang, Jianglong; Li, Yuanyuan; Wang, Jiatai; Zhang, Caihong; Hou, Xiaoyi

doi:10.1016/j.ceramint.2022.08.228

Cited by 7 publications

(6 citation statements)

References 35 publications

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“…The curves were fitted using NOVA 2.1 software, and the resulting values for R s , R f , and R ct are listed in Table 5. For uncycled samples, the comparable values of R s suggest a similar transport of Li + in the liquid electrolyte between the voids of the cathode material particles [72] . In Figure 10a, the inset images show that R ct values for all doped samples are comparable, which shows the significant influence of doping on improving charge transfer kinetics compared to pristine LNMC‐P cathode.…”

Section: Resultsmentioning

confidence: 79%

“…For uncycled samples, the comparable values of R s suggest a similar transport of Li + in the liquid electrolyte between the voids of the cathode material particles. [72] In Figure 10a, the inset images show that R ct values for all doped samples are comparable, which shows the significant influence of doping on improving charge transfer kinetics compared to pristine LNMC-P cathode. However, after cycling, all doped cathodes display two semi-circles corresponding to R f and R ct as shown in Figure 9b.…”

Section: Degradation Mechanism Analysismentioning

confidence: 83%

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Comprehensive Study of Ti and Ta Co‐Doping in Ni‐Rich Cathode Material LiNi_0.8Mn_0.1Co_0.1O₂ Towards Improving the Electrochemical Performance

Kumar,

Ramesha

2024

ChemPhysChem

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Layered Ni‐rich oxides (LiNi1‐x‐yCoxMnyO2) cathode materials are of current interest in high‐energy‐demanding applications, such as electric vehicles because of high discharge capacity and high intercalation potential. Here, the effect of co‐doping a small amount of Ti and Ta on the crystal structure, morphology, and electrochemical properties of high Ni‐rich cathode material LiNi0.8Mn0.1Co0.1‐x‐yTixTayO2 (0.0 ≤ x+y ≤ 0.2) was systematically investigated. This work demonstrates that an optimum level of Ti and Ta doping is beneficial towards enhancing electrochemical performance. The optimal Ti4+ and Ta5+ co‐doped cathode LiNi0.8Mn0.1Co0.09Ti0.005Ta0.005O2 exhibits a superior initial discharge capacity of 161.1 mAh g‐1 at 1C, and excellent capacity retention of 87.1% after 250 cycles, compared to the pristine sample that exhibits only 59.8% capacity retention. Moreover, the lithium‐ion diffusion coefficients for the co‐doped cathode after the 3rd and 50th cycles are 9.9×10‐10 cm2 s‐1 and 9.3×10‐10 cm2 s‐1 respectively, which is higher than that of the pristine cathode (3.3×10‐10 cm2 s‐1 and 2.5×10‐10 cm2 s‐1 respectively). Based on these studies, we conclude that Ti and Ta co‐doping enhances structural stability by mitigating irreversible phase transformation, improving Li‐ion kinetics by expanding interlayer spacing, and nanosizing primary particles, thereby stabilizing high‐nickel cathode materials and significantly enhancing cyclability.

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Section: Resultsmentioning

confidence: 79%

Section: Degradation Mechanism Analysismentioning

confidence: 83%

Comprehensive Study of Ti and Ta Co‐Doping in Ni‐Rich Cathode Material LiNi_0.8Mn_0.1Co_0.1O₂ Towards Improving the Electrochemical Performance

Kumar,

Ramesha

2024

ChemPhysChem

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“…31 Both samples exhibited c/a values exceeding 4.9, further affirming the ordered layered structure of the material. 5,22 Analysis of the refined cell parameters (Table 2) reveals that the S-NMA sample exhibits longer cell axis lengths (α and c) compared to P-NMA, with the cell volume increasing from 101.742 to 101.914 Å 3 . The extension of the c-axis facilitates the insertion/ extraction of Li + , as it corresponds to the metal-to-metal interplate distance.…”

Section: Figures 2i and S1mentioning

confidence: 99%

PVP-Assisted Hydrothermal Synthesis of Nickel-Rich Cobalt-Free Single-Crystal LiNi_0.9Mn_0.05Al_0.05O₂ for Lithium-Ion Batteries

He,

Liu,

Liu

et al. 2024

ACS Appl. Energy Mater.

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Given cobalt's scarcity and high toxicity, there is a considerable interest in nickel-rich materials with reduced or no cobalt content. However, the majority of such materials are polycrystalline particles, which are susceptible to mechanical breakage and structural deterioration during cycling, resulting in rapid capacity decay. Here, we synthesized dispersed and uniform precursors using a poly(vinylpyrrolidone) (PVP)-assisted hydrothermal approach, followed by calcination to produce nickel-rich, cobalt-free single-crystal LiNi 0.9 Mn 0.05 Al 0.05 O 2 (NMA) cathode materials. The single-crystal morphology effectively reduced intergranular cracking in the cathode material, preserving phase transition reversibility and cycle stability. At a current density of 0.5C, S-NMA exhibited a maximum discharge-specific capacity of 179.2 mAh g −1 with a capacity retention of 93.45% after 100 cycles. Additionally, at 55 °C and a current density of 1C, it reached 213.6 mAh g −1 with a capacity retention of 93.3% after 50 cycles. The single-crystal morphology of the cathode material exhibited an outstanding electrochemical performance. This study offers a novel approach to synthesizing nickel-rich single-crystal precursors for cathodes, which holds considerable promise for the advancement of high-performance cathode materials.

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“…Bulk doping can be generally divided into cation and anion doping. Metal elements, such as Al 3+ [94][95][96][97][98][99][100][101], Gd 3+ [102], Zr 4+ [103][104][105][106][107], Ti 4+ [108][109][110], Ge 4+ [111], Nb 5+ [112][113][114][115][116], Ta 5+ [117][118][119], Mo 6+ [120][121][122][123], W 6+ [124][125][126][127], Mg 2+ [128][129][130][131][132][133][134][135][136], Ca 2+ [137], Sr 2+ [138], Zn 2+ [139], and Na + [140][141][142], are commonly used, as well as non-metallic elements,...…”

Section: Structural Modification By Bulk Phase Dopingmentioning

confidence: 99%

“…The performance of NMA, such as rate capability, cycling stability, and thermal stability, is comparable to that of commercialized NMC and NCA, providing a cost-effective cathode material for the development of the next generation of high-performance cobalt-free LIBs. Hou et al [100] synthesized the Al-doped high-nickel cobalt-free cathode material LiNi 0.90 Mn 0.06 Al 0.04 O 2 (NMA9064) using the organic amine co-precipitation method and compared it with NC9010 and NMC9064 cathode materials. The results showed that the initial discharge specific capacity of the NMA cathode is 223.1 mAh•g −1 (0.1 C, 2.5-4.3 V), which is lower than that of NC9010 and NMC9064, but its average discharge voltage is 47 and 17 mV higher, respectively.…”

Section: Structural Modification By Bulk Phase Dopingmentioning

confidence: 99%

High-Performance High-Nickel Multi-Element Cathode Materials for Lithium-Ion Batteries

Tian,

Guo,

Bai

et al. 2023

Batteries

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With the rapid increase in demand for high-energy-density lithium-ion batteries in electric vehicles, smart homes, electric-powered tools, intelligent transportation, and other markets, high-nickel multi-element materials are considered to be one of the most promising cathode candidates for large-scale industrial applications due to their advantages of high capacity, low cost, and good cycle performance. In response to the competitive pressure of the low-cost lithium iron phosphate battery, high-nickel multi-element cathode materials need to continuously increase their nickel content and reduce their cobalt content or even be cobalt-free and also need to solve a series of problems, such as crystal structure stability, particle microcracks and breakage, cycle life, thermal stability, and safety. In this regard, the research progress of high-nickel multi-element cathode materials in recent years is reviewed and analyzed, and the progress of performance optimization is summarized from the aspects of precursor orientational growth, bulk phase doping, surface coating, interface modification, crystal morphology optimization, composite structure design, etc. Finally, according to the industrialization demand of high-energy-density lithium-ion batteries and the challenges faced by high-nickel multi-element cathode materials, the performance optimization direction of high-nickel multi-element cathode materials in the future is proposed.

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High-nickel and cobalt-free layered LiNi0.90Mn0.06Al0.04O2 cathode for lithium-ion batteries

Cited by 7 publications

References 35 publications

Comprehensive Study of Ti and Ta Co‐Doping in Ni‐Rich Cathode Material LiNi_0.8Mn_0.1Co_0.1O₂ Towards Improving the Electrochemical Performance

Comprehensive Study of Ti and Ta Co‐Doping in Ni‐Rich Cathode Material LiNi_0.8Mn_0.1Co_0.1O₂ Towards Improving the Electrochemical Performance

PVP-Assisted Hydrothermal Synthesis of Nickel-Rich Cobalt-Free Single-Crystal LiNi_0.9Mn_0.05Al_0.05O₂ for Lithium-Ion Batteries

High-Performance High-Nickel Multi-Element Cathode Materials for Lithium-Ion Batteries

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High-nickel and cobalt-free layered LiNi0.90Mn0.06Al0.04O2 cathode for lithium-ion batteries

Cited by 7 publications

References 35 publications

Comprehensive Study of Ti and Ta Co‐Doping in Ni‐Rich Cathode Material LiNi0.8Mn0.1Co0.1O2 Towards Improving the Electrochemical Performance

Comprehensive Study of Ti and Ta Co‐Doping in Ni‐Rich Cathode Material LiNi0.8Mn0.1Co0.1O2 Towards Improving the Electrochemical Performance

PVP-Assisted Hydrothermal Synthesis of Nickel-Rich Cobalt-Free Single-Crystal LiNi0.9Mn0.05Al0.05O2 for Lithium-Ion Batteries

High-Performance High-Nickel Multi-Element Cathode Materials for Lithium-Ion Batteries

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Comprehensive Study of Ti and Ta Co‐Doping in Ni‐Rich Cathode Material LiNi_0.8Mn_0.1Co_0.1O₂ Towards Improving the Electrochemical Performance

Comprehensive Study of Ti and Ta Co‐Doping in Ni‐Rich Cathode Material LiNi_0.8Mn_0.1Co_0.1O₂ Towards Improving the Electrochemical Performance

PVP-Assisted Hydrothermal Synthesis of Nickel-Rich Cobalt-Free Single-Crystal LiNi_0.9Mn_0.05Al_0.05O₂ for Lithium-Ion Batteries