Stabilizing nickel-rich layered oxide cathodes by magnesium doping for rechargeable lithium-ion batteries

Li, Hang; Zhou, Pengfei; Liu, Fangming; Li, Haixia; Cheng, Peng; Chen, Jun

doi:10.1039/c8sc03385d

Cited by 230 publications

(125 citation statements)

References 55 publications

(24 reference statements)

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“…Among others, it was demonstrated that especially the properties of Ni-rich NCMs show strong correlations with those of LiNiO 2 (e.g., in terms of crystallographic changes and phase transformation behavior, eventually leading to material fatigue). [238] Improvements in performance can also be achieved by anionic fluorine doping. Future research should clearly be focused on enhancing the electronic stability of materials to better protect them from, e.g., lattice oxygen loss.…”

Section: Summary and Perspectivementioning

confidence: 99%

Chemical, Structural, and Electronic Aspects of Formation and Degradation Behavior on Different Length Scales of Ni‐Rich NCM and Li‐Rich HE‐NCM Cathode Materials in Li‐Ion Batteries

et al. 2019

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costs are required. Current state-of-theart LIBs using, e.g., well-established LiNi 1/3 Co 1/3 Mn 1/3 O 2 (NCM111) cathode material are yet not able to fulfill all these demands. In order to increase the energy density of LIBs, battery produ cers and researchers pursue various strategies. Substitution of expensive Co by Ni to achieve LiNi 1−x−y Co x Mn y O 2 compounds with x < 0.3 in order to increase the structural stability at high state-of-charge (SOC) is one possible approach. Another promising material class is represented by Li-rich high-energy NCM (HE-NCM) materials (cLi 2 MnO 3 ⋅[1 − c]LiTMO 2 [TM = Ni, Co, Mn, etc.]). All of these subgroups of layered oxides have in common a crystal structure that is prone to irreversible changes and fatigue during continuous Li (de-)intercalation. The relevant changes in electronic and crystal structure strongly depend on the particular cathode composition and micro/nanostructure. The development of a target-oriented roadmap to improved LIBs that meet the above requirements must address the underlying mechanisms on different cell levels, i.e., from the atomic level to the electrode level. A comprehensive summary of the properties and developments in the field of Ni-rich NCM [1][2][3][4][5][6][7][8][9] and Li-rich HE-NCM [10][11][12][13][14][15][16] has been presented recently In order to satisfy the energy demands of the electromobility market, both Ni-rich and Li-rich layered oxides of NCM type are receiving much attention as high-energy-density cathode materials for application in Li-ion batteries. However, due to different stability issues, their longevity is limited. During formation and continuous cycling, especially the electronic and crystal structure suffers from various changes, eventually leading to fatigue and mechanical degradation. In recent years, comprehensive battery research has been conducted at Karlsruhe Institute of Technology, mainly aiming at better understanding the primary degradation processes occurring in these layered transition metal oxides. The characteristic process of formation and mechanisms of fatigue are fundamentally characterized and the effect of chemical composition on cell chemistry, electrochemistry, and cycling stability is addressed on different length scales by use of state-of-the-art analytical techniques, ranging from "standard" characterization tools to combinations of advanced in situ and operando methods. Here, the results are presented and discussed within a broader scientific context. by several authors. Here, we focus on the detailed characterization of these materials on different length scales, including the processes during formation and fatigue.After a brief introduction of the different materials addressed here, their characteristic process of formation and mechanisms of fatigue are discussed with respect to cell chemistry, electrochemistry, and cycling stability. Based on the fundamental results of our experimental studies on the material level, the effect of formation and fatigue on different cell levels is evalu...

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Section: Summary and Perspectivementioning

confidence: 99%

Chemical, Structural, and Electronic Aspects of Formation and Degradation Behavior on Different Length Scales of Ni‐Rich NCM and Li‐Rich HE‐NCM Cathode Materials in Li‐Ion Batteries

et al. 2019

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“…It's well-known that the specic surface area, pore diameter, and pore volume all inuence the electrochemical performance of the active electrode materials. [58][59][60] The specic surface area and pore size distribution of the synthesized (Mg 0.2 Ti 0.2 Zn 0.2 Cu 0.2 Fe 0.2 ) 3 O 4 particles were measured via nitrogen adsorption-desorption isotherm analysis ( Fig. S2(a) †).…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

A new spinel high-entropy oxide (Mg_0.2Ti_0.2Zn_0.2Cu_0.2Fe_0.2)₃O₄ with fast reaction kinetics and excellent stability as an anode material for lithium ion batteries

et al. 2020

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“…Rechargeable lithium-ion batteries (LIBs), as one of the energy storage technologies, are the key part of the contemporary energy system which is closely coupled with renewable energy generation, transmission and utilization [1][2][3][4]. Meanwhile, due to the high energy density, long lifespan and environmental friendliness, LIBs have been highly developed over the past decades and widely used in our daily life including portable electronics, electrical transportation, and even grid energy storage [5][6][7]. However, the current most mature LIBs cannot ever meet the ever-increasing demands [8][9].…”

Section: Introductionmentioning

confidence: 99%

Structure design and mechanism analysis of silicon anode for lithium-ion batteries

Chen

Yan

et al. 2019

Sci. China Mater.

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Silicon-based material is one of the most promising substitutes of widely used graphite anodes for the next generation Li-ion batteries due to its high theoretical capacity, low working potential, environmental friendliness, and abundant natural resource. However, the huge volume expansion and serious interfacial side reactions during lithiation and delithiation progresses of the silicon anode are the key issues which impede their further practical applications. Rational designs of silicon nanostructures are effective ways to address these problems. In this progress report, we firstly highlight the fundamental scientific problems, and then focus on recent progresses in design, preparation, in-situ characterization methods and failure mechanism of nanostructured silicon anode for high capacity lithium battery. We also summarize the key lessons from the successes so far and offer perspectives and future challenges to promote the applications of silicon anode in practical lithium batteries.

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Stabilizing nickel-rich layered oxide cathodes by magnesium doping for rechargeable lithium-ion batteries

Abstract: Magnesium doping in a high-capacity Ni-rich cathode suppresses cation mixing and transition-metal migration, leading to remarkable structural stability and cycling performance.

Cited by 230 publications

References 55 publications

Chemical, Structural, and Electronic Aspects of Formation and Degradation Behavior on Different Length Scales of Ni‐Rich NCM and Li‐Rich HE‐NCM Cathode Materials in Li‐Ion Batteries

Chemical, Structural, and Electronic Aspects of Formation and Degradation Behavior on Different Length Scales of Ni‐Rich NCM and Li‐Rich HE‐NCM Cathode Materials in Li‐Ion Batteries

A new spinel high-entropy oxide (Mg_0.2Ti_0.2Zn_0.2Cu_0.2Fe_0.2)₃O₄ with fast reaction kinetics and excellent stability as an anode material for lithium ion batteries

Structure design and mechanism analysis of silicon anode for lithium-ion batteries

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Stabilizing nickel-rich layered oxide cathodes by magnesium doping for rechargeable lithium-ion batteries

Abstract: Magnesium doping in a high-capacity Ni-rich cathode suppresses cation mixing and transition-metal migration, leading to remarkable structural stability and cycling performance.

Cited by 230 publications

References 55 publications

Chemical, Structural, and Electronic Aspects of Formation and Degradation Behavior on Different Length Scales of Ni‐Rich NCM and Li‐Rich HE‐NCM Cathode Materials in Li‐Ion Batteries

Chemical, Structural, and Electronic Aspects of Formation and Degradation Behavior on Different Length Scales of Ni‐Rich NCM and Li‐Rich HE‐NCM Cathode Materials in Li‐Ion Batteries

A new spinel high-entropy oxide (Mg0.2Ti0.2Zn0.2Cu0.2Fe0.2)3O4 with fast reaction kinetics and excellent stability as an anode material for lithium ion batteries

Structure design and mechanism analysis of silicon anode for lithium-ion batteries

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A new spinel high-entropy oxide (Mg_0.2Ti_0.2Zn_0.2Cu_0.2Fe_0.2)₃O₄ with fast reaction kinetics and excellent stability as an anode material for lithium ion batteries