The Effect of Elemental Doping on Nickel-Rich NCM Cathode Materials of Lithium Ion Batteries

Dang, Rongxin; Qu, Yuanduo; Ma, Zongkai; Yu, Lijie; Duan, Lianfeng; Lü, Wei

doi:10.1021/acs.jpcc.1c09691

Cited by 35 publications

(17 citation statements)

References 38 publications

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“…The deconvoluted peak Mn2p 1/2 core shows only the Mn 4+ state for all the materials in the series with binding energies of 653.98, 654.78, 654.56, 654.71, and 654.45 eV for MNFA811, MNFA712, MNFA721, MNFA622, and MNFA52525, respectively. These values are close to the reported values of Dang et al, Peng et al, and Xu et al, − which clarifies the reason for the appearance of a tiny peak for Mn 3+ /Mn 4+ redox behavior at the ∼4 V range in the cyclic voltammograms, which is evident for the minimal existence of Mn 3+ in the material. The peak intensity and peak area of Mn 4+ are more than those of Mn 3+ in the deconvoluted Mn2p 3/2 spectrum of all the materials, which gives a clear representation of substituent elements, and Ni, Fe, and Al significantly reduced the Mn 3+ ratio in all materials.…”

Section: Resultssupporting

confidence: 91%

Formation of the Secondary Phase Domain by Multi-Cation Substitution for the Superior Electrochemical Performance of Spinel Cathodes for High-Voltage Li-Ion Batteries

Shivamurthy

Thripuranthaka

Shelke

et al. 2022

ACS Appl. Energy Mater.

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Disorder-structured spinel oxides are opening frontiers for high-capacity/high-voltage cathodes to meet the challenges of independence on cobalt-containing cathodes toward cheap and sustainable energy storage sources in Li-ion batteries (LIBs). In the present work, a series of Co-free materials: LiMn 2-x-y-z Ni x Fe y Al z O 4 (x = 0.8−0.5, y = 0.1−0.25, and z = 0.1−0.25) with spinel/rock salt disordered structures are reported. The refinement studies confirmed that the materials synthesized are of mixed phase, and the I 311 /I 400 peaks ratio confirms that the synthesized materials are stable enough for electrochemical applications. This article addresses the influence of the secondary phase on the electrochemical activity and the reduction of the Mn 3+ ratio to alleviate the Mn dissolution issue for bettered stability. The optimized LiMnNi 0.7 Fe 0.1 Al 0.2 O 4 is appraised as a cathode material in the voltage range between 3.5 and 5 V (vs. Li + /Li) with an initial discharge capacity of 148.7 mA h g −1 at a rate of 1 C. This material showed very good cycling stability with a capacity retention of 79.5% after 1000 cycles. The cyclic voltammetry studies showed that the material can be a potential candidate for 5 V applications.

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Section: Resultssupporting

confidence: 91%

Formation of the Secondary Phase Domain by Multi-Cation Substitution for the Superior Electrochemical Performance of Spinel Cathodes for High-Voltage Li-Ion Batteries

Shivamurthy

Thripuranthaka

Shelke

et al. 2022

ACS Appl. Energy Mater.

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“…To overcome these effects, efforts are underway by utilising various strategies such as doping, coating, composite formation and change in morphology (Jiang et al, 2021a;Park et al, 2022b). Doping is considered as an important and effective way to control these factors in Ni-rich cathode oxides (Dang et al, 2022;Guo et al, 2022b;Park et al, 2023).…”

Section: Co Free Ni Rich Oxidesmentioning

confidence: 99%

Materials Towards the Development of Li Rechargeable Thin Film Battery

Singh

2023

Prabha Materials Science Letters

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The present work gives an overview of materials towards the development of Li rechargeable thin film batteries. Conventional Li rechargeable battery faces issues related with large volume, safety issues due to the presence of liquid electrolyte. These issues are proposed to resolve by developing these batteries in thin film form. The main drawback of these batteries is finding an appropriate inorganic material to be used as electrolytes. Other issue is related with design of appropriate cathode material which should be cost effective and is able to provide better electrochemical performance compared to competitive counterparts. In this review, a brief description of lithium lanthanum zirconate as a solid-state electrolyte and Co free Ni rich layered oxide has been provided to overcome these issues. Strategies for optimizing these materials for designing a stable, safe and cost-effective thin film batteries are also elaborated.

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“…The issues facilitate the formation of the cathode–electrolyte interphase (CEI). , The cracks formed during cycling provide new active surfaces, which can provide the reaction sites, making the CEI layer thicker. The thick CEI layer acts as a resistance, and the diffusion rate of Li + ions decreases over several cycles. , Research studies have been conducted to ameliorate the structural stability and electrochemical performances from many perspectives such as atom doping, − surface coating, , and morphology designs. , …”

Section: Introductionmentioning

confidence: 99%

Fundamental Understanding of the Effect of a Polyaniline Coating Layer on Cation Mixing and Chemical States of LiNi_0.9Co_0.085Mn_0.015O₂ for Li-Ion Batteries

Yoon

Shin

Park

2023

ACS Appl. Polym. Mater.

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A high nickel content of the cathode usually results in a large discharge capacity but causes structural collapse. Ni 2+ ions move to the Li layer when Li + ions are deintercalated during discharge, resulting in irreversible phase transition, cation mixing, dissolution of transition metal ions, and side reactions. A protective barrier is essential for maintaining the layered structures of cathode materials, even after several charge/discharge cycles of Li-ion batteries. Polyaniline (PANi) is an organic coating material with high conductivity and flexibility. PANi-coated cathodes have been widely reported for improving electrochemical performances. However, it is insufficient to prove the correlation between the PANi coating layer and structural stability through further analysis after an electrochemical test. Therefore, we focused on the structural stability and chemical states of the PANi-coated cathode after a cycle test by observing the morphology, lattice patterns, and chemical states of the surface. PANi-coated LiNi 0.9 Co 0.085 Mn 0.015 O 2 (NCM; PANi@NCM) exhibited an initial discharge capacity of 221 mAh g −1 and a capacity retention of 81% after 50 cycles at 45 °C, which corresponded to an improved performance compared to pristine NCM. The cycled PANi@NCM showed an identical morphology to that of the cathode before the test. The R3̅ m layered structure of PANi@NCM was maintained even after 50 cycles, as confirmed by transmission electron microscopy analysis with fast Fourier transform patterns and high-angle annular dark-field images. In addition, PANi@NCM maintains a thinner passivation layer (8 nm) compared with that of pristine NCM (27 nm). According to the X-ray photoelectron spectroscopy results, the surface chemical state of PANi@NCM showed that side reactions between the cathode and the electrolyte were suppressed during the cycle test. Therefore, it is demonstrated that the PANi coating layer prevents cation mixing and side reactions.

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The Effect of Elemental Doping on Nickel-Rich NCM Cathode Materials of Lithium Ion Batteries

Cited by 35 publications

References 38 publications

Formation of the Secondary Phase Domain by Multi-Cation Substitution for the Superior Electrochemical Performance of Spinel Cathodes for High-Voltage Li-Ion Batteries

Formation of the Secondary Phase Domain by Multi-Cation Substitution for the Superior Electrochemical Performance of Spinel Cathodes for High-Voltage Li-Ion Batteries

Materials Towards the Development of Li Rechargeable Thin Film Battery

Fundamental Understanding of the Effect of a Polyaniline Coating Layer on Cation Mixing and Chemical States of LiNi_0.9Co_0.085Mn_0.015O₂ for Li-Ion Batteries

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The Effect of Elemental Doping on Nickel-Rich NCM Cathode Materials of Lithium Ion Batteries

Cited by 35 publications

References 38 publications

Formation of the Secondary Phase Domain by Multi-Cation Substitution for the Superior Electrochemical Performance of Spinel Cathodes for High-Voltage Li-Ion Batteries

Formation of the Secondary Phase Domain by Multi-Cation Substitution for the Superior Electrochemical Performance of Spinel Cathodes for High-Voltage Li-Ion Batteries

Materials Towards the Development of Li Rechargeable Thin Film Battery

Fundamental Understanding of the Effect of a Polyaniline Coating Layer on Cation Mixing and Chemical States of LiNi0.9Co0.085Mn0.015O2 for Li-Ion Batteries

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Product

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Fundamental Understanding of the Effect of a Polyaniline Coating Layer on Cation Mixing and Chemical States of LiNi_0.9Co_0.085Mn_0.015O₂ for Li-Ion Batteries