Improved rate and cycle performance of nano-sized 5LiFePO 4 ·Li 3 V 2 (PO 4 ) 3 /C via high-energy ball milling assisted carbothermal reduction

Liu, Liying; Xiao, Wenxue; Chen, Mingzhe; Chen, Hua; Cui, Yanyan; Zeng, Guoxun; Chen, Yiming; Ke, Xi; Guo, Zaiping; Shi, Zhicong; Zhang, Haiyan; Chou, Shulei

doi:10.1016/j.jallcom.2017.05.189

Cited by 13 publications

(5 citation statements)

References 40 publications

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“…d Capacity retention of VS 2 electrode and VS 2 -TiS 2 electrode at 1000 mA g −1 . e Comparison of the VS 2 -TiS 2 electrode (starred) with other commonly used cathodes [7, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49] in Li-ion batteries. The y -axis on the plot gives the specific capacity achieved by the cathode material at the completion of a specified number of charge−discharge cycles given on the x -axis of the plot.…”

Section: Resultsmentioning

confidence: 99%

Vanadium disulfide flakes with nanolayered titanium disulfide coating as cathode materials in lithium-ion batteries

Yoshimura

et al. 2019

Nat Commun

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Unlike the vast majority of transition metal dichalcogenides which are semiconductors, vanadium disulfide is metallic and conductive. This makes it particularly promising as an electrode material in lithium-ion batteries. However, vanadium disulfide exhibits poor stability due to large Peierls distortion during cycling. Here we report that vanadium disulfide flakes can be rendered stable in the electrochemical environment of a lithium-ion battery by conformally coating them with a ~2.5 nm thick titanium disulfide layer. Density functional theory calculations indicate that the titanium disulfide coating is far less susceptible to Peierls distortion during the lithiation-delithiation process, enabling it to stabilize the underlying vanadium disulfide material. The titanium disulfide coated vanadium disulfide cathode exhibits an operating voltage of ~2 V, high specific capacity (~180 mAh g −1 @200 mA g −1 current density) and rate capability (~70 mAh g −1 @1000 mA g −1 ), while achieving capacity retention close to 100% after 400 charge−discharge steps.

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Section: Resultsmentioning

confidence: 99%

Vanadium disulfide flakes with nanolayered titanium disulfide coating as cathode materials in lithium-ion batteries

Yoshimura

et al. 2019

Nat Commun

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“…The rechargeable SIBs have attracted a great many studies due to the almost unlimited sources of sodium both in the Earth's crust and in the ocean. Also, SIBs possess similar reaction mechanisms to LIBs, which provide great convenience for researchers trying to develop novel cathodes based on the experience established on LIBs . The intrinsic nature of SIBs, however, means that they will exhibit lower energy density and sluggish Na + ion mobility .…”

Section: The Importance Of Developing High‐abundance and Low‐cost Catmentioning

confidence: 99%

High‐Abundance and Low‐Cost Metal‐Based Cathode Materials for Sodium‐Ion Batteries: Problems, Progress, and Key Technologies

Chen

Liu

Wang

et al. 2019

Advanced Energy Materials

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224

149

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Recently, room-temperature stationary sodium-ion batteries (SIBs) have received extensive investigations for large-scale energy storage systems (EESs) and smart grids due to the huge natural abundance and low cost of sodium. The SIBs share a similar "rocking-chair" sodium storage mechanism with lithium-ion batteries; thus, selecting appropriate electrodes with a low cost, satisfactory electrochemical performance, and high reliability is the key point for the development for SIBs. On the other hand, the carefully chosen elements in the electrodes also largely determine the cost of SIBs. Therefore, earth-abundantmetal-based compounds are ideal candidates for reducing the cost of electrodes. Among all the high-abundance and low-cost metal elements, cathodes containing iron and/or manganese are the most representative ones that have attracted numerous studies up till now. Herein, recent advances on both ironand manganese-based cathodes of various types, such as polyanionic, layered oxide, MXene, and spinel, are highlighted. The structure-function property for the iron-and manganese-based compounds is summarized and analyzed in detail. With the participation of iron and manganese in sodium-based cathode materials, real applications of room-temperature SIBs in large-scale EESs will be greatly promoted and accelerated in the near future.

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“…It is necessary to calculate lithium-ion diffusion coefficients ( D Li ) to further explore the electrochemical kinetics. , However, the D Li of C@V–Ti cannot be calculated in the absence of the accurate number of electrons per molecule during reduction ( n ) and the concentration of lithium ions ( C ) in C@V–Ti according to eq S1 . The A σ value (the value of σ can be obtained from the slope of the lines between Z ′ and ω –1/2 according to eq S2 ) of C@V–Ti is similar to that of C@V 2 O 3 below 2.0 V (Figure f), which suggests that the D Li of C@V–Ti was not decreased according to eq S1.…”

Section: Resultsmentioning

confidence: 99%

Interconnected Ultrasmall V₂O₃ and Li₄Ti₅O₁₂ Particles Construct Robust Interfaces for Long-Cycling Anodes of Lithium-Ion Batteries

Lei

Cheng

et al. 2019

ACS Appl. Mater. Interfaces

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Designing composite structures of active materials is critical for high-performance lithium-ion batteries, as it determines the reversibility of lithium-ion insertion and extraction of the electrodes. The V2O3 anode has a high specific capacity but presents poor cycling stability due to a large volume change. Herein, a novel C@V2O3–Li4Ti5O12 composite with ultrastable cycling stability is constructed. In this composite structure, the interconnected ultrasmall V2O3 and Li4Ti5O12 nanoparticles (5–10 nm) construct robust interfaces in the carbon matrix. The Li4Ti5O12 nanoparticles with excellent cycling stability and a minor volume change act as fixtures that effectively restrict the volume change of V2O3 nanoparticles and improve the cycling stability of the C@V2O3–Li4Ti5O12 composite. The C@V2O3–Li4Ti5O12 composite maintains no degradation during 500 cycles under a current density of 100 mA g–1. The results demonstrate that constructing a highly stable interface between the active nanoparticles with smaller and larger volume changes is of great significance to suppress their pulverization and achieve high reversibility. This work contributes to a new strategy to design the structure of long-cycling anode materials for highly stable lithium-ion batteries.

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Improved rate and cycle performance of nano-sized 5LiFePO 4 ·Li 3 V 2 (PO 4 ) 3 /C via high-energy ball milling assisted carbothermal reduction

Cited by 13 publications

References 40 publications

Vanadium disulfide flakes with nanolayered titanium disulfide coating as cathode materials in lithium-ion batteries

Vanadium disulfide flakes with nanolayered titanium disulfide coating as cathode materials in lithium-ion batteries

High‐Abundance and Low‐Cost Metal‐Based Cathode Materials for Sodium‐Ion Batteries: Problems, Progress, and Key Technologies

Interconnected Ultrasmall V₂O₃ and Li₄Ti₅O₁₂ Particles Construct Robust Interfaces for Long-Cycling Anodes of Lithium-Ion Batteries

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Improved rate and cycle performance of nano-sized 5LiFePO 4 ·Li 3 V 2 (PO 4 ) 3 /C via high-energy ball milling assisted carbothermal reduction

Cited by 13 publications

References 40 publications

Vanadium disulfide flakes with nanolayered titanium disulfide coating as cathode materials in lithium-ion batteries

Vanadium disulfide flakes with nanolayered titanium disulfide coating as cathode materials in lithium-ion batteries

High‐Abundance and Low‐Cost Metal‐Based Cathode Materials for Sodium‐Ion Batteries: Problems, Progress, and Key Technologies

Interconnected Ultrasmall V2O3 and Li4Ti5O12 Particles Construct Robust Interfaces for Long-Cycling Anodes of Lithium-Ion Batteries

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Interconnected Ultrasmall V₂O₃ and Li₄Ti₅O₁₂ Particles Construct Robust Interfaces for Long-Cycling Anodes of Lithium-Ion Batteries