Exploration of NbSe<sub>2</sub> Flakes as Reversible Host Materials for Sodium‐Ion and Potassium‐Ion Batteries

Luo, Yongping; Han, Jin; Ma, Qianru; Zhan, Renming; Zhang, Youquan; Xu, Qiyong; Xu, Maowen

doi:10.1002/slct.201801692

Cited by 21 publications

(21 citation statements)

References 15 publications

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“…The NbSe 2 flake electrode has ad ischarge capacity of 115mAh g À1 ,a nd the capacity retention is 91 %f rom the 2nd to the 50th cycle ( Figure 17 C). [177] Ex situ XRD measurementss how that NbSe 2 ,N a 0.5 NbSe 2 ,a nd NaNbSe 2 retain the same P63/mmc space group duringN a + intercalation, indicating that NbSe 2 possesses af avorable host structure for Na + storage. [17] Layered VS 2 has an intrinsic metallic conductivity with large interlayer distances (5.76 ).…”

Section: D Tmds For Sibsmentioning

confidence: 93%

“…The NbSe 2 sample shows excellent cycling stability and rate performance for Na storagew ith an initial reversible capacity of 116.6 mAh g À1 and retained capacity of 98.1 mAh g À1 after 100 cycles at 100 mA g À1 . [176] Moreover,acapacity of 78.6 mAh g À1 was observed at ah igh current density of 4000 mA g À1 ,s uggesting excellent rate capability.L uo et al [177] demonstrated that NbSe 2 has aclosed hexagonal and layered structure, in which each Nb atomic layer is sandwiched between two Se atomicl ayers and bonded by van der Waals forces betweent he layers (Figure 17 A). Thea s-synthesized layered NbSe 2 has an almost regularh exagon morphology with a thickness of 500 nm.…”

Section: D Tmds For Sibsmentioning

confidence: 99%

“…Moreover, a capacity of 78.6 mAh g −1 was observed at a high current density of 4000 mA g −1 , suggesting excellent rate capability. Luo et al demonstrated that NbSe 2 has a closed hexagonal and layered structure, in which each Nb atomic layer is sandwiched between two Se atomic layers and bonded by van der Waals forces between the layers (Figure A). The as‐synthesized layered NbSe 2 has an almost regular hexagon morphology with a thickness of 500 nm.…”

Section: D Tmds‐based Electrode Materials For Electrochemical Energymentioning

confidence: 99%

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Two‐Dimensional Transition Metal Chalcogenides for Alkali Metal Ions Storage

Zhang

Liao

et al. 2020

ChemSusChem

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On the heels of exacerbating environmental concerns and ever‐growing global energy demand, development of high‐performance renewable energy‐storage and ‐conversion devices has aroused great interest. The electrode materials, which are the critical components in electrochemical energy storage (EES) devices, largely determine the energy‐storage properties, and the development of suitable active electrode materials is crucial to achieve efficient and environmentally friendly EES technologies albeit the challenges. Two‐dimensional transition‐metal chalcogenides (2D TMDs) are promising electrode materials in alkali metal ion batteries and supercapacitors because of ample interlayer space, large specific surface areas, fast ion‐transfer kinetics, and large theoretical capacities achieved through intercalation and conversion reactions. However, they generally suffer from low electronic conductivities as well as substantial volume change and irreversible side reactions during the charge/discharge process, which result in poor cycling stability, poor rate performance, and low round‐trip efficiency. In this Review, recent advances of 2D TMDs‐based electrode materials for alkali metal‐ion energy‐storage devices with the focus on lithium‐ion batteries (LIBs), sodium‐ion batteries (SIBs), potassium‐ion batteries (PIBs), high‐energy lithium–sulfur (Li–S), and lithium–air (Li–O2) batteries are described. The challenges and future directions of 2D TMDs‐based electrode materials for high‐performance LIBs, SIBs, PIBs, Li–S, and Li–O2 batteries as well as emerging alkali metal‐ion capacitors are also discussed.

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Section: D Tmds For Sibsmentioning

confidence: 93%

Section: D Tmds For Sibsmentioning

confidence: 99%

Section: D Tmds‐based Electrode Materials For Electrochemical Energymentioning

confidence: 99%

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Two‐Dimensional Transition Metal Chalcogenides for Alkali Metal Ions Storage

Zhang

Liao

et al. 2020

ChemSusChem

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“…During charging, K + can form K y X, and in the meantime the transition metal elements are reduced to zero valence. [39][40][41][42][43][44] Typical conversion anode materials encompass transition metal oxides (…”

Section: Potassium-ion Storage Mechanismmentioning

confidence: 99%

“…Anode candidates belonging to conversion type are usually transition metal compounds (TM a X b , TM: transition metal; X: O, S, F, P, N). During charging, K + can form K y X, and in the meantime the transition metal elements are reduced to zero valence 39‐44 . Typical conversion anode materials encompass transition metal oxides (Co 3 O 4 , Fe 2 O 3 ), 45,46 transition metal chalcogenides (MoS 2 , MoSe 2 ), 47,48 transition metal nitrides (VN, Fe 2 N), 49 and transition metal phosphides (CoP, MoP) 50,51 .…”

Section: Potassium‐ion Storage Mechanismmentioning

confidence: 99%

Promise and reality of practical potassium‐based energy storage systems

Zhao

Sun

2020

Engineering Reports

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The soaring demands for reliable, safe, and low-cost power grid request the rational development of innovative energy storage systems with cost-effectiveness and sustainability. In response, potassium-based energy storage systems have recently attracted considerable attentions as a promising alternative to lithium-ion batteries targeting applications in portable electronics and electric vehicles. Latest years have indeed witnessed excellent review articles summarizing research activities and technological advances in this realm. However, such a field is progressing so fast that many updates have not been fully caught up. In this review, recent advances in the designing strategies for the anode component of potassium-based energy storage devices, including potassium-ion batteries, potassium metal batteries, and potassium-ion hybrid capacitors, are extensively reviewed. The existing challenges are acknowledged in the beginning of each section pertaining to these systems, followed by presenting the fruitful progress achieved. A brief proposal for future directions in this emerging field is put forward at the end of the context.

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Enabling Electron Delocalization by Conductor Heterostructure for Highly Reversible Sodium Storage

Liu,

Wang,

Song

et al. 2023

Adv Funct Materials

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Niobium oxides have fascinated numerous interests for ultrafast sodium‐ion batteries due to their impressive stability, fast pseudocapacitive kinetics, and high safety features. However, the poor intrinsic electronic conductivity and unrevealed mechanisms largely limit their further applications. Here, inspired by density functional theory (DFT) calculations, the introduction of conductor heterostructure (Nb2O5/NbSe2) can largely decrease the bulk phase inserted energy of Na+ from 9.88 to −3.54 eV, as well as promote the delocalization of electron, greatly improving the electrical conductivity of Nb2O5. As expected, the as‐obtained orthorhombic niobium pentoxide (T‐Nb2O5‐x‐NbSe2@C) delivers a high conductivity of 3.69 S cm−1, exhibiting a great improvement of four orders magnitude than that of the parent Nb2O5 (1.87 × 10−4 S cm−1). Impressively, T‐Nb2O5‐x‐NbSe2@C possesses a high reversible capacity of 249 mAh g−1 at 0.1 A g−1, as well as excellent rate performance of 63 mAh g−1 at 5.0 A g−1, nearly twins the capacity of parent porous Nb2O5. Furthermore, the periodic evolutions of the main peaks for targeted electrodes during repeated charging/discharging processes have been further revealed by in situ XRD, demonstrating a highly reversible inserted/extracted storage mechanism of Na+. This work provides a novel method to improve the conductivity of materials by constructing conductor heterojunction.

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Exploration of NbSe₂ Flakes as Reversible Host Materials for Sodium‐Ion and Potassium‐Ion Batteries

Cited by 21 publications

References 15 publications

Two‐Dimensional Transition Metal Chalcogenides for Alkali Metal Ions Storage

Two‐Dimensional Transition Metal Chalcogenides for Alkali Metal Ions Storage

Promise and reality of practical potassium‐based energy storage systems

Enabling Electron Delocalization by Conductor Heterostructure for Highly Reversible Sodium Storage

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Exploration of NbSe2 Flakes as Reversible Host Materials for Sodium‐Ion and Potassium‐Ion Batteries

Cited by 21 publications

References 15 publications

Two‐Dimensional Transition Metal Chalcogenides for Alkali Metal Ions Storage

Two‐Dimensional Transition Metal Chalcogenides for Alkali Metal Ions Storage

Promise and reality of practical potassium‐based energy storage systems

Enabling Electron Delocalization by Conductor Heterostructure for Highly Reversible Sodium Storage

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Product

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Exploration of NbSe₂ Flakes as Reversible Host Materials for Sodium‐Ion and Potassium‐Ion Batteries