Flexible H2V3O8 nanobelts/reduced graphene oxide electrodes with high mass loading for lithium ion batteries

Liu, Zuowei; Xu, Renxin; Wei, Wei; Jing, Peng; Li, Xin; Zhu, Quanyao; Sun, Huajun; Dong, Yueyang; Захарова, Г. С.

doi:10.1016/j.ssi.2018.11.017

Cited by 19 publications

(17 citation statements)

References 39 publications

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“…In order to investigate the influence of Mo substitution and/or prelithiation on the electrochemical properties of HVO, phase‐pure P‐HVO and modified HVO compounds were tested electrochemically in a half‐cell setup with Li metal as reference electrode. Even though HVO contains crystal water bonded to vanadium ions, no HF formation during cycling using LiPF 6 containing electrolytes was reported [3,18] . All materials were first discharged to 1.7 V vs. Li/Li + and afterwards charged to 3.9 V vs. Li/Li + with a constant current of 100 mA g −1 for 30 cycles.…”

Section: Resultsmentioning

confidence: 99%

“…In this context, efficient energy storage is a key element for the successful realization of the energy turn. Furthermore, the growth‐rate of electronic devices demands the development of flexible and wearable energy storage devices [3,4] . One of the most promising electrochemical energy storage concepts relies on rechargeable batteries such as Li‐ion batteries (LIB), as a very prominent example [4,5] …”

Section: Introductionmentioning

confidence: 99%

“…However, VO can be used as starting material to synthesize hydrated vanadium oxides frequently exhibiting mixed vanadium valence states [3,18,19] . H 2 V 3 O 8 (also written as V 3 O 7 ⋅ H 2 O, HVO) is another promising cathode material belonging to the layered vanadium oxide class for LIB [3,20,21] . HVO has an orthorhombic crystal structure (space group Pnam , No.…”

Section: Introductionmentioning

confidence: 99%

“…Electrochemical intercalation of four lithium ions per formula unit into the structure in the voltage window between 1.5–4.2 V vs. Li/Li + leads to a theoretical capacity of 380–400 mAh g −1 , which is almost twice the amount of current commercially available cathode materials [8,29] . The reaction for Li‐intercalation/deintercalation into HVO/HVO modifications is generally described by the following Equation : [3,30–32]

true normalH_{2} normalV_{3} normalO_{8} + x Li^{+} + x normale^{-} \vec{\leftarrow} Li_{x} normalH_{2} normalV_{3} normalO_{8}; (0 < x \leq 4)

…”

Section: Introductionmentioning

confidence: 99%

“…However, the full theoretical capacity of HVO has not been reached so far. In addition, cycling stability in HVO is still a challenge that needs to be addressed, to guarantee feasible long‐living LIB [3,8,21] . Modifying the intrinsic composition and stabilizing the structure of electrode materials have proven to be successful approaches to overcome these problems, as demonstrated for VO [12,17,37] .…”

Section: Introductionmentioning

confidence: 99%

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Modified H₂V₃O₈ to Enhance the Electrochemical Performance for Li‐ion Insertion: The Influence of Prelithiation and Mo‐Substitution

et al. 2021

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Nanostructured H2V3O8 is a promising high‐capacity cathode material, suitable not only for Li+ but also for Na+, Mg2+, and Zn2+ insertion. However, the full theoretical capacity for Li+ insertion has not been demonstrated experimentally so far. In addition, improvement of cycling stability is desirable. Modifications like substitution or prelithiation are possibilities to enhance the electrochemical performance of electrode materials. Here, for the first time, the substitution of vanadium sites in H2V3O8 with molybdenum was achieved while preserving the nanostructure by combining a soft chemical synthesis approach with a hydrothermal process. The obtained Mo‐substituted vanadate nanofibers were further modified by prelithiation. While pristine H2V3O8 showed an initial capacity of 223 mAh g−1 and a retention of 79 % over 30 cycles, combining Mo substitution and prelithiation led to a superior initial capacity of 312 mAh g−1 and a capacity retention of 94 % after 30 cycles.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

true normalH_{2} normalV_{3} normalO_{8} + x Li^{+} + x normale^{-} \vec{\leftarrow} Li_{x} normalH_{2} normalV_{3} normalO_{8}; (0 < x \leq 4)

…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modified H₂V₃O₈ to Enhance the Electrochemical Performance for Li‐ion Insertion: The Influence of Prelithiation and Mo‐Substitution

et al. 2021

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Toward High‐Areal‐Capacity Electrodes for Lithium and Sodium Ion Batteries

Chen

Zhao

Yang

et al. 2022

Advanced Energy Materials

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In recent decades, extensive nanomaterials and related techniques have been proposed to achieve high capacities surpassing conventional battery electrodes. Nevertheless, most of them show low mass loadings and areal capacities, which deteriorates the cell‐level energy densities and increases cost after the consideration of inactive components in batteries. Achieving high‐areal‐capacity is essential for those advanced materials to move out of laboratories and into practical applications, yet remains challenging due to the decreased mechanical properties and sluggish electrochemical kinetics at elevated mass loadings. In this paper, the previously reported strategies for promoting areal lithium storage performance, including material‐level designs, electrode‐level architecture optimization, and novel manufacturing techniques are reviewed. Sodium‐ion battery electrodes are discussed subsequently, emphatically on its difference with those for lithium storage. Pouch‐cell‐level energy densities based on high‐areal‐capacity electrodes with different thicknesses are also estimated. For each category of these strategies, working principles, advantages, and possible problems are analyzed, with typical examples presented in detail and a summary table comparing the structures and achieved performance. Finally, the features of the high‐areal‐capacity electrodes demonstrated in this review are concluded, and overlooked issues and potential research directions in this field are summarized.

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Chemical Preintercalation of H₂V₃O₈‐reduced Graphene Oxide Composites for Improved Na‐ and Li‐ion Battery Cathodes

et al. 2021

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Due to a growing demand for sustainable electrical energy storage alternatives to Li‐ion batteries (LIBs), Na‐ion batteries (SIBs) are of great interest because of the abundance of Na+. By modifying layered H2V3O8 by preintercalation and composite formation, improved electrochemical properties were obtained in LIBs. In analogy, a scalable soft chemistry synthesis is developed, to chemically presodiate H2V3O8 for the first time, in addition to a composite formation reaction with reduced graphene oxide (rGO). Crystal structure and morphology of all compounds are determined and their electrochemical properties as cathode are evaluated with respect to both Na+ and Li+ intercalation. The combination of preintercalation and composite formation leads to excellent initial capacities of 96 mAh ⋅ g−1 for SIBs and 371 mAh ⋅ g−1 for LIBs (58 % and 48 % higher than unmodified H2V3O8) at a practical current density of 100 mA ⋅ g−1, demonstrating that H2V3O8 is a promising cathode material for SIBs and LIBs.

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Flexible H2V3O8 nanobelts/reduced graphene oxide electrodes with high mass loading for lithium ion batteries

Cited by 19 publications

References 39 publications

Modified H₂V₃O₈ to Enhance the Electrochemical Performance for Li‐ion Insertion: The Influence of Prelithiation and Mo‐Substitution

Modified H₂V₃O₈ to Enhance the Electrochemical Performance for Li‐ion Insertion: The Influence of Prelithiation and Mo‐Substitution

Toward High‐Areal‐Capacity Electrodes for Lithium and Sodium Ion Batteries

Chemical Preintercalation of H₂V₃O₈‐reduced Graphene Oxide Composites for Improved Na‐ and Li‐ion Battery Cathodes

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Flexible H2V3O8 nanobelts/reduced graphene oxide electrodes with high mass loading for lithium ion batteries

Cited by 19 publications

References 39 publications

Modified H2V3O8 to Enhance the Electrochemical Performance for Li‐ion Insertion: The Influence of Prelithiation and Mo‐Substitution

Modified H2V3O8 to Enhance the Electrochemical Performance for Li‐ion Insertion: The Influence of Prelithiation and Mo‐Substitution

Toward High‐Areal‐Capacity Electrodes for Lithium and Sodium Ion Batteries

Chemical Preintercalation of H2V3O8‐reduced Graphene Oxide Composites for Improved Na‐ and Li‐ion Battery Cathodes

Contact Info

Product

Resources

About

Modified H₂V₃O₈ to Enhance the Electrochemical Performance for Li‐ion Insertion: The Influence of Prelithiation and Mo‐Substitution

Modified H₂V₃O₈ to Enhance the Electrochemical Performance for Li‐ion Insertion: The Influence of Prelithiation and Mo‐Substitution

Chemical Preintercalation of H₂V₃O₈‐reduced Graphene Oxide Composites for Improved Na‐ and Li‐ion Battery Cathodes