Facile synthesis of Li3V2(PO4)3/C cathode material for lithium-ion battery via freeze-drying

Guo, Shuainan; Bai, Ying; Geng, Zhenfeng; Wu, Feng; Wu, Chuan

doi:10.1016/j.jechem.2018.07.011

Cited by 18 publications

(5 citation statements)

References 42 publications

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“…However, reaching the CoV of 4.8 V usually results in side reactions and irreversible chemical behaviors. Because of this, researchers have thus far focused primarily on the low-voltage range between 3.0 and 4.3 V. , Besides, only a minimal number of works considered the electrochemical mechanism at a high CoV of 4.8 V until now, − let alone to determine the phase evolution mechanism during battery operation. Thus, some controversy still exists regarding the reaction mechanism and capacity fading mechanism of Li 3 V 2 (PO 4 ) 3 cycled in the range of 3.0–4.8 V. , …”

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confidence: 99%

An Extremely Fast Charging Li₃V₂(PO₄)₃ Cathode at a 4.8 V Cutoff Voltage for Li-Ion Batteries

Zheng

Bai

et al. 2020

ACS Energy Lett.

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Extremely fast charging (XFC) is currently a crucial technology for lithium-ion batteries (LIBs) for addressing the concerns over the range and charging problems of electric vehicles. However, attaining both a high power density and a high energy density is a known challenge in electrochemical systems. Here, we report that Li3V2(PO4)3 can be an XFC cathode for high-voltage LIBs. Contrary to conventional belief, Li3V2(PO4)3 at a cutoff voltage (named CoV hereafter) of 4.8 V exhibits a rate performance and a cyclability that are better than those at a CoV of 4.3 V. The energy density based on an electrode can even exceed the theoretical value of LiFePO4, and the power density is comparable to that obtained from supercapacitors. Empirical characterizations are complemented with first-principles density functional theory calculations to determine the reaction mechanism and the diffusion pathways of the third Li+ in Li3V2(PO4)3. Moreover, the slow capacity decay mechanism of Li3V2(PO4)3 at a high CoV was elucidated by the differential capacity curve method.

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confidence: 99%

An Extremely Fast Charging Li₃V₂(PO₄)₃ Cathode at a 4.8 V Cutoff Voltage for Li-Ion Batteries

Zheng

Bai

et al. 2020

ACS Energy Lett.

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“…In the equivalent circuit (Figure a inset), Z re represents the diffusion behavior of Na ion at low frequency; R s represents the intercept; R ct represents the charge transfer resistance; controlled-potential electrolysis represents the capacity of the electrode surface layer and the double layer capacitance. Furthermore, the diffusion coefficient of sodium ion ( D Na + ) could be calculated by the following formulas, which have been popularly used for lithium-ion batteries − and SIBs …”

Section: Resultsmentioning

confidence: 74%

High-Capacity Interstitial Mn-Incorporated Mn_xFe_3–xO₄/Graphene Nanocomposite for Sodium-Ion Battery Anodes

Ren

Bai

Wang

et al. 2019

ACS Appl. Mater. Interfaces

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Sodium-ion batteries (SIBs) have attracted wide attention because of their prospects for grid-scale electrical regulation and cost effectiveness of sodium. In this regard, iron oxides (FeO x ) are considered as one of the most promising anode candidates due to their high theoretical capacity and low cost. Unfortunately, the utilization of FeO x anodes suffers from sluggish reaction kinetics and significant lattice variation, causing insufficient rate performance and fast capacity degradation during the sodiation/desodiation process. In this study, Mn ions are incorporated through interstitial sites into a Fe3O4 lattice to form the Mn-incorporated Fe3O4/graphene (M-Fe3O4/G) composites through a facile hydrothermal method. Confirmed by XRD Rietveld refinement and the first-principles calculation, Mn occupation into the body structure can effectively condense the electron density around the Fermi level and thus contributes to the increased electrical conductivity and improved electrochemical properties. Accordingly, the M0.1Fe2.9O4/G composite demonstrates a high reversible capacity of 439.8 mA h g–1 at a current density of 100 mA g–1 over 200 cycles. Even at a high current density of 1 A g–1, the M-Fe3O4/G composites remain stable for over 1200 cycles, delivering a capacity of 210 mA h g–1. Coupled with a Na3V2(PO4)3-type cathode, the Mn-incorporated Fe3O4/G composites demonstrate good suitability in full SIBs (161.2 mA h g–1 at the current density of 1 A g–1 after 100 cycles). The regulation of Mn ions in the Fe3O4 lattice provides insights into the optimization of metal oxide anode candidates for their application in SIBs.

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“…Rechargeable Li-ion batteries (LIBs) are widely used as the main power source for portable electronic devices such as smartphones, cameras, and laptops [1][2][3][4][5][6] . Consequently, the need to develop LIBs that can provide higher energy density, longer cycle life, and improved safety is urgent [7][8][9] . In the composition of LIBs, the nonaqueous electrolyte plays a crucial role in determining key performance parameters such as cycle life, power density, and efficiency [10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

Enhanced safety of sulfone-based electrolytes for lithium-ion batteries: broadening electrochemical window and enhancing thermal stability

Li,

Wu,

et al. 2023

Energy Materials and Devices

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Facile synthesis of Li3V2(PO4)3/C cathode material for lithium-ion battery via freeze-drying

Cited by 18 publications

References 42 publications

An Extremely Fast Charging Li₃V₂(PO₄)₃ Cathode at a 4.8 V Cutoff Voltage for Li-Ion Batteries

An Extremely Fast Charging Li₃V₂(PO₄)₃ Cathode at a 4.8 V Cutoff Voltage for Li-Ion Batteries

High-Capacity Interstitial Mn-Incorporated Mn_xFe_3–xO₄/Graphene Nanocomposite for Sodium-Ion Battery Anodes

Enhanced safety of sulfone-based electrolytes for lithium-ion batteries: broadening electrochemical window and enhancing thermal stability

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Facile synthesis of Li3V2(PO4)3/C cathode material for lithium-ion battery via freeze-drying

Cited by 18 publications

References 42 publications

An Extremely Fast Charging Li3V2(PO4)3 Cathode at a 4.8 V Cutoff Voltage for Li-Ion Batteries

An Extremely Fast Charging Li3V2(PO4)3 Cathode at a 4.8 V Cutoff Voltage for Li-Ion Batteries

High-Capacity Interstitial Mn-Incorporated MnxFe3–xO4/Graphene Nanocomposite for Sodium-Ion Battery Anodes

Enhanced safety of sulfone-based electrolytes for lithium-ion batteries: broadening electrochemical window and enhancing thermal stability

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An Extremely Fast Charging Li₃V₂(PO₄)₃ Cathode at a 4.8 V Cutoff Voltage for Li-Ion Batteries

An Extremely Fast Charging Li₃V₂(PO₄)₃ Cathode at a 4.8 V Cutoff Voltage for Li-Ion Batteries

High-Capacity Interstitial Mn-Incorporated Mn_xFe_3–xO₄/Graphene Nanocomposite for Sodium-Ion Battery Anodes