Understanding electrochemical performance improvement with Nb doping in lithium-rich manganese-based cathode materials

Dong, Shengde; Zhou, Yuan; Hai, Chunxi; Zeng, Jinbo; Sun, Yuhan; Shen, Yue; Li, Xiang; Ren, Xiaopeng; Sun, Cheng; Zhang, Guotai; Wu, Zhaowei

doi:10.1016/j.jpowsour.2020.228185

Cited by 87 publications

(39 citation statements)

References 39 publications

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“…Moreover, Nb is often used as doped atoms to modify and optimize other materials as well as the main energy storage material. For example, Zhou and co-workers [56] doped Nb into lithium manganese based anode material to improve its electrochemical performance. Herein, compared with Mn, the higher binding energy of Nb-O and larger Nb ion size can well inhibit O separation during lithium inset and expand ion transport channels.…”

Section: Othermentioning

confidence: 99%

Optimization Design and Application of Niobium‐Based Materials in Electrochemical Energy Storage

Lian

Yang

Wang

et al. 2020

Adv Energy and Sustain Res

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In various energy storage devices, the development and research of electrode materials has always been a key factor. Nb‐based materials are one choice of energy storage materials because of the good ion‐diffusion channels and high theoretical capacity. More importantly, their advantages, such as safe potential range, high structural stability, and highly reversible redox reaction with small strain, are conducive to efficient, safe, and stable energy storage development. Based on aforementioned superiority, much of the research is to further optimize performance of Nb‐based materials by unique nano‐morphology design, lattice regulation, and functional additives composition, showing good electrochemical performance in many kinds of devices. This review mainly introduces the classification of Nb‐based materials used for energy storage, their application in different battery systems, and common optimization methods. Accordingly, the deficiencies and prospects of Nb‐based materials are also discussed in detail.

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Section: Othermentioning

confidence: 99%

Optimization Design and Application of Niobium‐Based Materials in Electrochemical Energy Storage

Lian

Yang

Wang

et al. 2020

Adv Energy and Sustain Res

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“…(It is also a common feature of ion conductors, such as pomegranate and NASICON type.) In recent research, a new type of lithium ion conductor LiTa 2 PO 8 was prepared by solid-phase synthesis of Li 2 CO 3 , Ta 2 O 5 , (NH 4 ) 2 HPO 4 [74]. In this new structure, TaO 6 and PO 4 are connected through corner sharing to form a new anion skeleton, which provides a 3D diffusion channel for the conduc-tion of lithium ions.…”

Section: Improve the Ionic Conductivity Of The Buffer Layermentioning

confidence: 99%

Solid electrolyte-electrode interface based on buffer therapy in solid-state lithium batteries

Wang

et al. 2021

Int J Miner Metall Mater

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In the past few years, the all-solid lithium battery has attracted worldwide attentions, the ionic conductivity of some all-solid lithiumion batteries has reached 10 −3 -10 −2 S/cm, indicating that the transport of lithium ions in solid electrolytes is no longer a major problem. However, some interface issues become research hotspots. Examples of these interfacial issues include the electrochemical decomposition reaction at the electrode-electrolyte interface; the low effective contact area between the solid electrolyte and the electrode etc. In order to solve the issues, researchers have pursued many different approaches. The addition of a buffer layer between the electrode and the solid electrolyte has been at the center of this endeavor. In this review paper, we provide a systematic summarization of the problems on the electrode-solid electrolyte interface and detailed reflection on the latest works of buffer-based therapies, and the review will end with a personal perspective on the improvement of buffer-based therapies.

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“…Cation doping has been recommended to reduce the number of trivalent Mn 3+ which can undergo a disproportionation reaction. Various dopants were previously explored, which includes Al (Ding et al, 2011;Xiong et al, 2012), Ti (Lu et al, 2014), Ni (Amarilla et al, 2007), Nb (Dong et al, 2020), Co (Xu et al, 2020), etc. Among most, Nb is considered as a potential substitute element for Mn due to the stronger binding energy of Nb-O than Mn-O; which is beneficial for suppressing surface Mn dissolution during intercalation (Zhao et al, 2011;Dong et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Various dopants were previously explored, which includes Al (Ding et al, 2011;Xiong et al, 2012), Ti (Lu et al, 2014), Ni (Amarilla et al, 2007), Nb (Dong et al, 2020), Co (Xu et al, 2020), etc. Among most, Nb is considered as a potential substitute element for Mn due to the stronger binding energy of Nb-O than Mn-O; which is beneficial for suppressing surface Mn dissolution during intercalation (Zhao et al, 2011;Dong et al, 2020). Li and coworkers (Li et al, 2012) reported that a small amount of niobium (Nb 5+ ) doping on the Li 1.02 Mn 2 O 4 can increase the conductivity and improve the cycling performance of the material.…”

Section: Introductionmentioning

confidence: 99%

The effect of niobium doping on lithium manganese oxide surfaces, LiMn2-xNbxO4: DFT study

Ramogayana

Maenetja

Ngoepe

2022

SATNT

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Lithium manganese oxide (LiMn2O4) is one of the promising cathode material for lithium-ion batteries (LIBs), however, it suffers from capacity fading mainly due to surface manganese (Mn2+) ion dissolution during Charge/discharge processes. Although many studies focused on reducing Mn-dissolution, surface modification has proven to be an ideal method of reducing Mn2+ ion dissolution in secondary Li-ion batteries. In this study, the density functional theory calculations were carried out to study the bulk properties and investigate the effect of Nb surface doping on major LiMn2O4 spinel surfaces. Upon surface Nb doping, we observed a decrease in surface free energy as compared to the surface energies of pure surfaces, indicating that the surface stabilizes upon doping. However, the (001) surface remained the most stable facet, with a similar trend of increasing energies and decreasing stability, i.e. (001) < (011) < (111). Due to the stronger binding energy of Nb-O as compared to Mn-O, doping with Nb can suppress the Mn dissolution during intercalation and hence improve the electrochemical performance.

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Understanding electrochemical performance improvement with Nb doping in lithium-rich manganese-based cathode materials

Cited by 87 publications

References 39 publications

Optimization Design and Application of Niobium‐Based Materials in Electrochemical Energy Storage

Optimization Design and Application of Niobium‐Based Materials in Electrochemical Energy Storage

Solid electrolyte-electrode interface based on buffer therapy in solid-state lithium batteries

The effect of niobium doping on lithium manganese oxide surfaces, LiMn2-xNbxO4: DFT study

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