Electrospun VSe<sub>1.5</sub>/CNF composite with excellent performance for alkali metal ion batteries

Xu, Lihong; Xiong, Peixun; Ling, Zeng; Fang, Yixing; Liu, Renpin; Liu, Junbin; Luo, Fenqiang; Chen, Qinghua; Wei, Mingdeng; Qian, Qingrong

doi:10.1039/c9nr03574e

Cited by 58 publications

(36 citation statements)

References 77 publications

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“…There are four main approaches to enhance the ionic and electrical conductivity, buffer or accommodate the volume changes, increase the structural integrity and stability, and boost the reaction kinetics of metal chalcogenides (Figure ): limitation of discharge depth, nanostructure engineering, confinement by carbon nanophases, or ternary alloying. The majority of these modification methods described above have already been verified to be effective for potassium‐based energy storage according to the results reported previously . Furthermore, the interface between the anode and electrolyte in PIBs has drawn recent attention and is another non‐negligible factor for stabilizing these energy‐storage systems.…”

Section: Introductionmentioning

confidence: 85%

“…Hence, in the following sections, we illustrate recently developed metal‐chalcogenide‐based composites anode materials for PIBs, focusing on the aspects of potassium storage mechanisms, design, synthesis methods, measurements, modification strategies, and corresponding performances. To provide a more comprehensive and systematic report, several representative examples are summarized in Table before discussing the details …”

Section: Metal Chalcogenide Anodes For Pibsmentioning

confidence: 99%

“…Illustration of the classification and dominant modification strategies that have been reported for metal chalcogenides‐based PIB anodes. Some of the inset pictures are reproduced with permission from Wiley‐VCH, American Chemical Society, The Royal Society of Chemistry and Elsevier …”

Section: Introductionmentioning

confidence: 99%

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Metal chalcogenides for potassium storage

Zhou

Liu

Zhang

et al. 2020

InfoMat

173

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Potassium-based energy storage technologies, especially potassium ion batteries (PIBs), have received great interest over the past decade. A pivotal challenge facing high-performance PIBs is to identify advanced electrode materials that can store the large-radius K + ions, as well as to tailor the various thermodynamic parameters. Metal chalcogenides are one of the most promising anode materials, having a high theoretical specific capacity, high in-plane electrical conductivity, and relatively small volume change on charge/discharge. However, the development of metal chalcogenides for PIBs is still in its infancy because of the limited choice of high-performance electrode materials. However, numerous efforts have been made to conquer this challenge. In this article, we overview potassium storage mechanisms, the technical hurdles, and the optimization strategies for metal chalcogenides and highlight how the adjustment of the crystalline structure and choice of the electrolyte affect the electrochemical performance of metal-chalcogenide-based electrode materials. Other potential potassium-based energy storage systems to which metal chalcogenides can be applied are also discussed. Finally, future research directions focusing on metal chalcogenides for potassium storage are proposed. K E Y W O R D Senergy storage, metal chalcogenides, modification strategies, nanocomposites, potassium ion batteries

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Section: Introductionmentioning

confidence: 85%

Section: Metal Chalcogenide Anodes For Pibsmentioning

confidence: 99%

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Metal chalcogenides for potassium storage

Zhou

Liu

Zhang

et al. 2020

InfoMat

173

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“…All along, developing low‐cost energy storage devices to store intermittent renewable energy (e.g., solar energy, water energy, and wind energy) on a large scale has been a research hotspot. Compared with LIBs, SIBs are more suitable for large‐scale storage of renewable energy on account of the fact that the sodium reserve is abundant, widely spread, and cheap . Furthermore, sodium has electrochemical properties similar to lithium.…”

Section: Introductionmentioning

confidence: 99%

“…Compared with LIBs, SIBs are more suitable for large-scale storage of renewable energy on account of the fact that the sodium reserve is abundant, widely spread, and cheap. [14,15] Furthermore, sodium has electrochemical properties similar to lithium. Nevertheless, not all electrode materials suitable for LIBs are propitious to SIBs, mainly because of the larger ionic radius of sodium (1.02 Å) as compared with lithium (0.76 Å).…”

Section: Introductionmentioning

confidence: 99%

Plant Oil–Inspired 3D Flower‐Like Zn₃V₃O₈ Nanospheres Coupled with N‐Doped Carbon as Anode Material for Li‐/Na‐Ion Batteries

Cheng

Shi

et al. 2019

Energy Tech

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Plant oil–inspired 3D flower‐like Zn3V3O8 nanospheres coupled with nitrogen doped (N‐doped) carbon synthesized via the microemulsion/calcination strategy are used as anodes for lithium‐/sodium‐ion batteries (LIBs/SIBs). The synergistic interaction between the unique 3D flower‐like structure and the existence of N‐doped carbon can provide enough space to buffer volume expansion during the Li+/Na+ intake/outlet process and enhance conductivity, respectively. Thus, the material delivers progressive electrochemical performance. Specifically, the Zn3V3O8 nanospheres exhibit a reversible specific capacity of 1140.6 mAh g−1 after 200 cycles for LIBs and 113.0 mAh g−1 after 400 cycles for SIBs at a current density of 200 mA g−1. Furthermore, the Zn3V3O8 nanospheres electrode owns rate capability for LIBs such as 933.8, 847.9, 780.8, and 664.1 mAh g−1 at elevated current densities of 200, 400, 800, and 1600 mAh g−1, respectively. In addition, it delivers reversible capacities of 207.5, 119.2, 74.1, and 42.7 mAh g−1 at 100, 200, 500, 1000, and 2000 mA g−1 for SIBs, respectively.

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Surface Redox Pseudocapacitance Boosting Vanadium Nitride for High‐Power and Ultra‐Stable Potassium‐Ion Capacitors

Zhou

et al. 2022

Adv Funct Materials

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Developing a high‐rate and stable battery‐type anode to match the capacitor‐type cathode is a critical issue for potassium ion capacitors (PICs). Surface‐redox pseudocapacitive materials can meet this demand due to their fast surface Faradaic reaction kinetics and superior structure stability during charging–discharging. Herein, a free‐standing anode by growing VN particle‐composed nanosheets on carbon fibers (VN@CFs) is developed. The VN@CFs is endowed with high reversible capacity of 245.8 mA h g–1 at 0.05 A g–1, high rate performance of 102.7 mA h g–1 at 6.0 A g–1, and long‐term stability. Based on the in situ XRD, ex situ XPS and TEM characterizations, and density functional theory calculations, it is proved that the potassium storage of VN derives from a surface‐redox pseudocapacitive mechanism between VN and K+, rather than an intercalation or conversion reaction. As expected, the as‐assembled PICs based on the VN@CFs anode show an ultrahigh power output of 10.9 kW kg–1 when keeping an energy density of 49.2 Wh kg–1 and excellent capacity retention of 86.8% after 15000 cycles.

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Electrospun VSe_1.5/CNF composite with excellent performance for alkali metal ion batteries

Abstract: The VSe1.5/CNF composite was fabricated as a superior performance anode material for alkali metal ion batteries.

Cited by 58 publications

References 77 publications

Metal chalcogenides for potassium storage

Metal chalcogenides for potassium storage

Plant Oil–Inspired 3D Flower‐Like Zn₃V₃O₈ Nanospheres Coupled with N‐Doped Carbon as Anode Material for Li‐/Na‐Ion Batteries

Surface Redox Pseudocapacitance Boosting Vanadium Nitride for High‐Power and Ultra‐Stable Potassium‐Ion Capacitors

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Electrospun VSe1.5/CNF composite with excellent performance for alkali metal ion batteries

Abstract: The VSe1.5/CNF composite was fabricated as a superior performance anode material for alkali metal ion batteries.

Cited by 58 publications

References 77 publications

Metal chalcogenides for potassium storage

Metal chalcogenides for potassium storage

Plant Oil–Inspired 3D Flower‐Like Zn3V3O8 Nanospheres Coupled with N‐Doped Carbon as Anode Material for Li‐/Na‐Ion Batteries

Surface Redox Pseudocapacitance Boosting Vanadium Nitride for High‐Power and Ultra‐Stable Potassium‐Ion Capacitors

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Electrospun VSe_1.5/CNF composite with excellent performance for alkali metal ion batteries

Plant Oil–Inspired 3D Flower‐Like Zn₃V₃O₈ Nanospheres Coupled with N‐Doped Carbon as Anode Material for Li‐/Na‐Ion Batteries