Exploration of Cr0.2Fe0.8Nb11O29 as an advanced anode material for lithium-ion batteries of electric vehicles

Lou, Xiaoming; Xu, Zhihao; Luo, Zhibin; Lin, Chunfu; Yang, Chao; Zhao, Hua; Zheng, Peng; Li, Jianbao; Wang, Ning; Chen, Yongjun; Wu, Hui

doi:10.1016/j.electacta.2017.05.168

Cited by 34 publications

(37 citation statements)

References 17 publications

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“…For instance, Cr 0.2 Fe 0.8 Nb 11 O 29 has a larger electrical conductivity of 1.60 × 10 −7 S cm −1 than pure FeNb 11 O 29 (1.62 × 10 −10 S cm −1 ). As a result, Cr 0.2 Fe 0.8 Nb 11 O 29 exhibits enhanced electrochemical energy storage performances compared with pure FeNb 11 O 29 …”

Section: Other Nb‐based Oxides Electrodesmentioning

confidence: 99%

Niobium‐Based Oxides Toward Advanced Electrochemical Energy Storage: Recent Advances and Challenges

Deng

Zhu

et al. 2019

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Niobium‐based oxides including Nb2O5, TiNbxO2+2.5x compounds, M–Nb–O (M = Cr, Ga, Fe, Zr, Mg, etc.) family, etc., as the unique structural merit (e.g., quasi‐2D network for Li‐ion incorporation, open and stable Wadsley– Roth shear crystal structure), are of great interest for applications in energy storage systems such as Li/Na‐ion batteries and hybrid supercapacitors. Most of these Nb‐based oxides show high operating voltage (>1.0 V vs Li+/Li) that can suppress the formation of solid electrolyte interface film and lithium dendrites, ensuring the safety of working batteries. Outstanding rate capability is impressive, which can be derived from their fast intercalation pseudocapacitive kinetics. However, the intrinsic poor electrical conductivity hinders their energy storage applications. Various strategies including structure optimization, surface engineering, and carbon modification are effectively used to overcome the issues. This review provides a comprehensive summary on the latest progress of Nb‐based oxides for advanced electrochemical energy storage applications. Major impactful work is outlined, promising research directions, and various performance‐optimizing strategies, as well as the energy storage mechanisms investigated by combining theoretical calculations and various electrochemical characterization techniques. In addition, challenges and perspectives for future research and commercial applications are also presented.

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Section: Other Nb‐based Oxides Electrodesmentioning

confidence: 99%

Niobium‐Based Oxides Toward Advanced Electrochemical Energy Storage: Recent Advances and Challenges

Deng

Zhu

et al. 2019

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115

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“…The voltammogram shape of doped samples does not change with respect to the pure orthorhombic phase (Fig. 2) and, by increasing the sweep rate, the peaks increase their intensities and broadening, with negligible shift of the redox peaks, as could be expected for an intrinsic pseudo‐capacitive behaviour …”

Section: Resultsmentioning

confidence: 73%

“…[7] The redox peaks of FeNb 11 O 29 have been attributed to Nb 3+ /Nb 4+ , Nb 4+ /Nb 5+ and Fe 2+ /Fe 3+ redox couples. In particular, the peaks are located at about 1.1 and 1.3 V for Nb 3+ /Nb 4+ , 1.7 (splitted in two components) and 2.0 V for Nb 4+ /Nb 5+ and 2.4 V for Fe 2+ /Fe 3+ . However, in most cases, for Nb 4+ /Nb 5+ couple only the main redox peak at about 1.7 V can be resolved.…”

Section: Resultsmentioning

confidence: 92%

“…In the literature, at our knowledge, there are very few papers regarding the doping of FeNb 11 O 29 . Recently, Cr and Mn and V doping were proposed, with the aim to improve the structural stability and the electrical conduction of the material. In all the cases, better electrochemical performances with respect to the undoped compound, but also interesting spectroscopic and magnetic features were observed.…”

Section: Introductionmentioning

confidence: 99%

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The Doping of FeNb₁₁O₂₉ as a Way to Improve Its Electrochemical Performances

2019

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FeNb11O29, with the possibility to exchange up to 23 electrons per formula unit and a theoretical capacity value of 400 mAh/g, is nowadays a very promising anode material for Li‐ion batteries. However, the improvement of its electrochemical performances is still an open challenge, and the doping is a well‐recognized method to obtain this goal. In this paper, orthorhombic Fe0.8Mn0.2Nb11O29 and Fe0.8V0.2Nb11O29 samples were prepared by solid state synthesis. The redox processes, as determined by cyclic voltammetry, involve only Fe and Nb ions as in the undoped compound. FeNb11O29 is a well‐known mixed oxide with pseudocapacitive behavior, which is increased with the Mn doping. The doped samples show better performances during long term cycling at 2 C, with capacities of 240 and 220 mAh/g and capacity retention of 100.9 and 98.7% for Mn and V doped respectively.

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“…The fitted plots consist of two depressed semicircles in the high and middle frequency regions, and a straight line in the low‐frequency region. According to the previous literatures, CPE1 and CPE2 correspond to constant phase element of interface reaction and charge transfer, respectively. The linearity at low‐frequency is caused by Na + diffusion process (W1).…”

Section: The Long Cycling Performance Comparison For the Published Sementioning

confidence: 99%

A Freestanding and Long‐Life Sodium–Selenium Cathode by Encapsulation of Selenium into Microporous Multichannel Carbon Nanofibers

Yuan

Sun

Zeng

et al. 2017

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Selenium cathode has attracted more and more attention because of its comparable volumetric capacity but much higher electrical conductivity than sulfur cathode. Compared to Li-Se batteries, Na-Se batteries show many advantages, including the low cost of sodium resources and high volumetric capacity. However, Na-Se batteries still suffer from the shuttle effect of polyselenides and high volumetric expansion, resulting in the poor electrochemical performance. Herein, Se is impregnated into microporous multichannel carbon nanofibers (Se@MCNFs) thin film with high flexibility as a binder-free cathode material for Na-Se batteries. The fibrous unique structure of the Se@MCNFs is beneficial to alleviate the volume change of Se during cycling, improve the utilization of active material, and suppress the dissolution of polyselenides into electrolyte. The freestanding Se@MCNF thin-film electrode exhibits high discharge capacity (596 mA h g at the 100th cycle at 0.1 A g ) and excellent rate capability (379 mA h g at 2 A g ) for Na-Se batteries. In addition, it also shows long cycle life with a negligible capacity decay of 0.067% per cycle over 300 cycles at 0.5 A g . This work demonstrates the possibility to develop high performance Na-Se batteries and flexible energy storage devices.

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Exploration of Cr0.2Fe0.8Nb11O29 as an advanced anode material for lithium-ion batteries of electric vehicles

Cited by 34 publications

References 17 publications

Niobium‐Based Oxides Toward Advanced Electrochemical Energy Storage: Recent Advances and Challenges

Niobium‐Based Oxides Toward Advanced Electrochemical Energy Storage: Recent Advances and Challenges

The Doping of FeNb₁₁O₂₉ as a Way to Improve Its Electrochemical Performances

A Freestanding and Long‐Life Sodium–Selenium Cathode by Encapsulation of Selenium into Microporous Multichannel Carbon Nanofibers

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Exploration of Cr0.2Fe0.8Nb11O29 as an advanced anode material for lithium-ion batteries of electric vehicles

Cited by 34 publications

References 17 publications

Niobium‐Based Oxides Toward Advanced Electrochemical Energy Storage: Recent Advances and Challenges

Niobium‐Based Oxides Toward Advanced Electrochemical Energy Storage: Recent Advances and Challenges

The Doping of FeNb11O29 as a Way to Improve Its Electrochemical Performances

A Freestanding and Long‐Life Sodium–Selenium Cathode by Encapsulation of Selenium into Microporous Multichannel Carbon Nanofibers

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The Doping of FeNb₁₁O₂₉ as a Way to Improve Its Electrochemical Performances