Electrospun V 2 MoO 8  as a cathode material for rechargeable batteries with Mg metal anode

Miao, Xiaowei; Chen, Zhenying; Wang, Nan; Nuli, Yanna; Wang, Jiulin; Yang, Jun; Hirano, Shin‐ichi

doi:10.1016/j.nanoen.2017.02.014

Cited by 82 publications

(44 citation statements)

References 58 publications

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“…Figure e highlights the exceptional cyclic stability and the admirable reversible capacity of this work in comparison with other reported hybrid batteries . The cycling performances of V 2 C‐10 electrodes at 0.05 A g −1 in 0.4 m APC electrolyte involving different amounts of LiCl are also carried out (Figure f).…”

Section: Resultsmentioning

confidence: 79%

“…It was demonstrated by Yury's group in 2016 that the free-standing and flexible Ti 3 C 2 T x /CNT composites delivered a reversible capacity of ≈100 mA h g −1 at 10 mA g −1 and maintained 80 mA h g −1 after 500 cycles in MLIBs. [35] Nevertheless, compared with the previous literatures concerning the above cathodes for hybrid Mg 2+ /Li + batteries, [9,[12][13][14][15][16][17][18][19][20] the reversible capacity and cycling performance of this MXene-based cathode remain to be further improved. V 2 C MXene, which consists of two V layers and one C layer, is thinner than Ti 3 C 2 that containing three Ti layers and two C layers, leading to a higher surface area with more active sites.…”

Section: Introductionmentioning

confidence: 95%

“…Until now, several studies on hybrid Mg 2+ /Li + ‐ion battery have been carried out. These designs employed H 2 V 3 O 8 nanowires, V 2 MoO 8 , TiS 2 , MoO 2 , MoS 2 , VO 2 nanoflakes, Li 4 Ti 5 O 12 , VS 4 and expanded MoS 2 /graphene as cathode materials. However, most host materials exhibit a low rate capability or a short cycle life.…”

Section: Introductionmentioning

confidence: 99%

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Prelithiated V₂C MXene: A High‐Performance Electrode for Hybrid Magnesium/Lithium‐Ion Batteries by Ion Cointercalation

Liu

Zhao

et al. 2020

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The pursuit of high reversible capacity and long cycle life for rechargeable batteries has gained extensive attention in recent years, and the development of applicable electrode materials is the key point. Herein, thanks to the preintercalation of lithium ions, a stable and highly conductive nanostructure of V2C MXene is successfully fabricated via a facile self‐discharge mechanism, which provides open spaces for rapid ion diffusion and guarantees fast electron transport. Taking the prelithiated V2C as electrode, an outstanding initial coulombic efficiency of 80% and an impressive capacity retention of ≈98% after 5000 charge/discharge cycles are achieved for lithium‐ion batteries. Especially, it demonstrates a fascinating reversible capacity of up to 230.3 mA h g−1 at 0.02 A g−1 and a long cycling life of 82% capacity retention over 480 cycles in the hybrid magnesium/lithium‐ion batteries. In addition, the Mg2+ and Li+ ions cointercalation mechanism of the prelithiated V2C is elucidated through ex situ X‐ray diffraction and X‐ray photoelectron spectroscopy characterizations. This work not only offers an effective approach to compensate the large initial lithium loss of high‐capacity anode materials but also opens up a new and viable avenue to develop promising hybrid Mg/Li‐storage materials with eminent electrochemical performance.

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Section: Resultsmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 95%

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Prelithiated V₂C MXene: A High‐Performance Electrode for Hybrid Magnesium/Lithium‐Ion Batteries by Ion Cointercalation

Liu

Zhao

et al. 2020

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124

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“…In addition, they are made with an abundant natural source (1.94 % for Mg and 0.006 % for Li) and Mg is deposited without the formation of dendrites . In spite of these highly attractive features, rechargeable batteries with Mg anode still face a series of challenges to improve the kinetically sluggish Mg diffusion in solid hosts, the incompatibility between the Mg anode and non‐aqueous electrolytes and the widening potential window . Therefore, it is necessary to find a suitable cathode with an excellent electrochemical performance.…”

Section: Introductionmentioning

confidence: 99%

Spinel Li₄Mn₅O₁₂ as 2.0 V Insertion Materials for Mg‐Based Hybrid Ion Batteries

et al. 2020

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With the increasing demand for electrical energy storage, a new Mg−Li hybrid battery with Mg anode is regarded as a promising candidate because of low cost, high volumetric capacity, and dendrite‐free nature of the Mg anode. Nevertheless, the characteristics of low operation voltage and low energy density for Mg−Li hybrid batteries hinders their widespread application, owing to limited reversible cathodes. To overcome these issues, a highly reversible fast Li+ insertion cathode with high voltage is an effective strategy to realize high‐energy‐density Mg−Li hybrid batteries. Herein, we develop the 2 V high‐voltage spinel Li4Mn5O12 cathode material with unique nano‐/microspheres, using a novel low‐temperature method, offering a short Li‐diffusion path and sufficient transport channels for electrolyte penetration into the electrode. For the first time, we demonstrate the feasibility of the spinel Li4Mn5O12 nano‐/microspheres with hierarchical architecture as a cathode for 2 V hybrid Mg−Li batteries. It exhibits a reversible specific capacity of 155 mAh g−1 and a long discharge voltage platform exceeding 2.0 V (vs. Mg/Mg2+) coupled with high energy density of 326 Wh kg−1 at a current density of 0.1 C (1 C=163 mA g−1). Our results pave the way of constructing new hybrid Mg−Li batteries with high voltage and high energy density.

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“…The available experimental voltage for the full lithiation of VO 2 to LiVO 2 (~2.0 V [124]) was reasonably well matched by our computational model. The predicted convex hulls and voltage-composition curves for Mg and Al insertions (Figure 11) demonstrate that positive voltages can be maintained up to the concentrations of MgVO 2 and Al 0.5 VO 2 (beyond the expected Mg 0.5 VO 2 and Al 0.33 VO 2 , respectively, based on vanadium redox), resulting in specific capacities among the highest for existing Mg [144][145][146] and Al [126,147,148] one-electron vanadium reduction chemistry. This was confirmed in [34], where we explored effects of Li, Mg and Al concentration on insertion energetics in VO2(R).…”

Section: LI Na K Mg and Al Insertion Propertiesmentioning

confidence: 95%

Insertion of Mono- vs. Bi- vs. Trivalent Atoms in Prospective Active Electrode Materials for Electrochemical Batteries: An ab Initio Perspective

2017

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Rational design of active electrode materials is important for the development of advanced lithium and post-lithium batteries. Ab initio modeling can provide mechanistic understanding of the performance of prospective materials and guide design. We review our recent comparative ab initio studies of lithium, sodium, potassium, magnesium, and aluminum interactions with different phases of several actively experimentally studied electrode materials, including monoelemental materials carbon, silicon, tin, and germanium, oxides TiO 2 and V x O y as well as sulphur-based spinels MS 2 (M = transition metal). These studies are unique in that they provided reliable comparisons, i.e., at the same level of theory and using the same computational parameters, among different materials and among Li, Na, K, Mg, and Al. Specifically, insertion energetics (related to the electrode voltage) and diffusion barriers (related to rate capability), as well as phononic effects, are compared. These studies facilitate identification of phases most suitable as anode or cathode for different types of batteries. We highlight the possibility of increasing the voltage, or enabling electrochemical activity, by amorphization and p-doping, of rational choice of phases of oxides to maximize the insertion potential of Li, Na, K, Mg, Al, as well as of rational choice of the optimum sulfur-based spinel for Mg and Al insertion, based on ab initio calculations. Some methodological issues are also addressed, including construction of effective localized basis sets, applications of Hubbard correction, generation of amorphous structures, and the use of a posteriori dispersion corrections.

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Electrospun V 2 MoO 8 as a cathode material for rechargeable batteries with Mg metal anode

Cited by 82 publications

References 58 publications

Prelithiated V₂C MXene: A High‐Performance Electrode for Hybrid Magnesium/Lithium‐Ion Batteries by Ion Cointercalation

Prelithiated V₂C MXene: A High‐Performance Electrode for Hybrid Magnesium/Lithium‐Ion Batteries by Ion Cointercalation

Spinel Li₄Mn₅O₁₂ as 2.0 V Insertion Materials for Mg‐Based Hybrid Ion Batteries

Insertion of Mono- vs. Bi- vs. Trivalent Atoms in Prospective Active Electrode Materials for Electrochemical Batteries: An ab Initio Perspective

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Electrospun V 2 MoO 8 as a cathode material for rechargeable batteries with Mg metal anode

Cited by 82 publications

References 58 publications

Prelithiated V2C MXene: A High‐Performance Electrode for Hybrid Magnesium/Lithium‐Ion Batteries by Ion Cointercalation

Prelithiated V2C MXene: A High‐Performance Electrode for Hybrid Magnesium/Lithium‐Ion Batteries by Ion Cointercalation

Spinel Li4Mn5O12 as 2.0 V Insertion Materials for Mg‐Based Hybrid Ion Batteries

Insertion of Mono- vs. Bi- vs. Trivalent Atoms in Prospective Active Electrode Materials for Electrochemical Batteries: An ab Initio Perspective

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Product

Resources

About

Prelithiated V₂C MXene: A High‐Performance Electrode for Hybrid Magnesium/Lithium‐Ion Batteries by Ion Cointercalation

Prelithiated V₂C MXene: A High‐Performance Electrode for Hybrid Magnesium/Lithium‐Ion Batteries by Ion Cointercalation

Spinel Li₄Mn₅O₁₂ as 2.0 V Insertion Materials for Mg‐Based Hybrid Ion Batteries