Doping strategies for enhancing the performance of lithium nickel manganese cobalt oxide cathode materials in lithium-ion batteries

Ko, Gyeongbin; Jeong, Seongdeock; Park, Sanghyuk; Lee, Jimin; Kim, Seoa; Shin, Youngjun; Kim, Woo Seok; Kwon, Kyungjung

doi:10.1016/j.ensm.2023.102840

Cited by 13 publications

(9 citation statements)

References 383 publications

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“…Doping refers to an impurity effect, which influences the defect structure but not the ground structure and is hence usually limited to low concentrations [204]. The phenomenon has been reviewed in great detail in the recent scientific literature [173,[204][205][206].…”

Section: Dopingmentioning

confidence: 99%

A review of the degradation mechanisms of NCM cathodes and corresponding mitigation strategies

Britala,

Marinaro,

Kucinskis

2023

Journal of Energy Storage

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Section: Dopingmentioning

confidence: 99%

A review of the degradation mechanisms of NCM cathodes and corresponding mitigation strategies

Britala,

Marinaro,

Kucinskis

2023

Journal of Energy Storage

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“…[151] Dopant ions are typically categorized based on their chemical nature: large metallic ions, such as Cd, Cs, and Rb widen ionic diffusion pathways, while smaller metallic ions such as K and Na prevent unwanted phase transformations; metalloids, such as B, Si, Ge and Sb increase lattice volumes and protect electrode materials from HF attack; and non-metals such as F, Cl, Br, P and S forming strong bonds with active intercalating ion to form stronger crystallographic structures and prevent the release of oxygen. [154] Despite these generalizations, the dopant ion can have a dramatically different effect depending on the active electrode material and actively intercalating ion used. This variability means the literature is rich with reviews on the effect of different ion dopants on different active materials: Lithium Titanium Oxides, [155] Li-rich layered oxides, [156] Ni-rich cathodes, [157] Ni-rich layered oxides, [158] and NMC.…”

Section: Elemental Dopingmentioning

confidence: 99%

“…This variability means the literature is rich with reviews on the effect of different ion dopants on different active materials: Lithium Titanium Oxides, [155] Li-rich layered oxides, [156] Ni-rich cathodes, [157] Ni-rich layered oxides, [158] and NMC. [154] From a practical point of view, elemental doping of active electrode material can be difficult due to the energetic and technical methods required: co-precipitation, spray pyrolysis, combustion, solid state reaction and complex chemical pathways for synthesis such as the sol-gel method and hydrothermal synthesis. In addition, purification and thorough material characterization are required to determine if the desired product was formed, inhibiting possible upscaling of the material synthesis.…”

Section: Elemental Dopingmentioning

confidence: 99%

Crystallography of Active Particles Defining Battery Electrochemistry

Morley,

George,

Hadler

et al. 2023

Advanced Energy Materials

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Crystallographic features of battery active particles impose an inherent limitation on their electrochemical figures of merit namely capacity, roundtrip efficiency, longevity, safety, and recyclability. Therefore, crystallographic properties of these particles are increasingly measured not only to clarify the principal pathways by which they store and release charge but to realize the full potential of batteries. Here, state‐of‐the‐art advances in Li+, K+, and Na+ chemistries are reviewed to reiterate the links between crystallography variations and battery electrochemical trends. These manifest at different length scales and are accompanied by a multiplicity of processes such as doping, cation disorder, directional crystal growth and extra redox. In light of this, an emphasis is placed on the need for more accurate correlations between crystallographic structure and battery electrochemistry in order to harness crystallographic beneficiation into electrode material design and manufacture, translating into high‐performance and safe energy storage solutions.

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“…Ionic and electronic conductors with good chemical stability tend to be the preferred coating materials. Some key elements in these coating materials may gradually penetrate into surface or even subsurface of the crystal during coating or electrode reactions. − …”

Section: Introductionmentioning

confidence: 99%

Improved Cycling Stability of Ni-Rich Cathode Material by In Situ Introduced TM-B-O Amorphous Surface Structure

Yang,

Lai

et al. 2024

ACS Appl. Mater. Interfaces

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Current research has found the amorphous/crystal interface has some unexpected electrochemical behaviors. This work designed a surface modification strategy using NaBH 4 to induce in situ conversion of the surface structure of Ni-rich LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) into TM-B-O amorphous interface layer. Oxidizing the surface from transition metals (TM) with high valence and reductive BH 4 − in a weak polar medium of ethanol results in an easy redox reacton. A TM-B-O amorphous structure is formed on NCM811 surface. The action of reactive wetting ensures a complete and uniform structure evolution of the surface crystals. The complete coverage protects the outer crystal and the heterogeneous interface impedance between the modified layer and bulk is reduced. More importantly, this amorphous interface layer through in situ conversion enhances the heterogeneous link at interface and its own structural stability. The modified NCM811 (TB2@NCM) treated with 1 wt % NaBH 4 shows excellent electrochemical performance, especially cyclic stability. At a high cutoff voltage of 4.5 V, the capacity retention was 72.5% at 1 C after 500 cycles. The electrode achieves 173.7 mAh•g −1 at 10 C. This work creates a modifying strategy with potential application prospect due to simple technology with low-cost raw material under mild operating conditions.

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Doping strategies for enhancing the performance of lithium nickel manganese cobalt oxide cathode materials in lithium-ion batteries

Cited by 13 publications

References 383 publications

A review of the degradation mechanisms of NCM cathodes and corresponding mitigation strategies

A review of the degradation mechanisms of NCM cathodes and corresponding mitigation strategies

Crystallography of Active Particles Defining Battery Electrochemistry

Improved Cycling Stability of Ni-Rich Cathode Material by In Situ Introduced TM-B-O Amorphous Surface Structure

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