Highly dispersive CoSe<sub>2</sub> nanoparticles encapsulated in carbon nanotube-grafted multichannel carbon fibers as advanced anodes for sodium-ion half/full batteries

Sui, Yangyang; Guo, Jia; Chen, Xiaoyu; Guan, Jinpeng; Chen, Xinhe; Wei, Huaixin; Liu, Quan; Wei, Bo; Geng, Hongbo

doi:10.1039/d2qi01453j

Cited by 16 publications

(1 citation statement)

References 47 publications

(59 reference statements)

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“…[17][18][19] Nevertheless, TMSs still have some unavoidable drawbacks that limit their large-scale applications, including volume expansion during charging and discharging, unsatisfactory cycling stability, and rapid capacity fading because of low conductivity. [20,21] To solve these problems, several strategies have been adopted in recent studies, such as exploring high-conductivity TMSs, designing rationally engineered nanostructures, and constructing TMS/carbon framework composites. [22][23][24][25][26] For example, Liu et al fabricated CoSe nanoparticles confined in nitrogen-doped carbon nanotubes, and CNT shell improves the conductivity and accommodates the volume changes.…”

Section: Introductionmentioning

confidence: 99%

Construction of Sugar‐Gourd‐Shaped Carbon Nanofibers Embedded with Heterostructured Zinc‐Cobalt Selenide Nanocages for Superior Potassium‐Ion Storage

Ding,

Zhang,

Gao

et al. 2023

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Transition metal selenides are considered as promising anode materials for potassium‐ion batteries (PIBs) due to their high theoretical capacities. However, their applications are limited by low conductivity and large volume expansion. Herein, sugar‐gourd‐shaped carbon nanofibers embedded with heterostructured ZnCo‐Se nanocages are prepared via a facile template‐engaged method combined with electrospinning and selenization process. In this hierarchical ZnCo‐Se@NC/CNF, abundant phase boundaries of CoSe2/ZnSe heterostructure can promote interfacial electron transfer and chemical reactivity. The interior porous ZnCo‐Se@NC nanocage structure relieves volume expansion and maintains structural integrity during K+ intercalation and deintercalation. The exterior spinning carbon nanofibers connect the granular nanocages in series, which prevents the agglomeration, shortens the electron transport distance and enhances the reaction kinetics. As a self‐supporting anode material, ZnCo‐Se@NC/CNF delivers a high capacity (362 mA h g−1 at 0.1 A g−1 after 100 cycles) with long‐term stability (95.9% capacity retention after 1000 cycles) and shows superior reaction kinetics with high‐rate K‐storage. Energy level analysis and DFT calculations illustrate heterostructure facilitates the adsorption of K+ and interfacial electron transfer. The K+ storage mechanism is revealed by ex situ XRD and EIS analyses. This work opens a novel avenue in designing high‐performance heterostructured anode materials with ingenious structure for PIBs.

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Section: Introductionmentioning

confidence: 99%

Construction of Sugar‐Gourd‐Shaped Carbon Nanofibers Embedded with Heterostructured Zinc‐Cobalt Selenide Nanocages for Superior Potassium‐Ion Storage

Ding,

Zhang,

Gao

et al. 2023

Small

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Electron‐Spin Regulation Driving Heterointerface Electron Distribution and Phase Transition toward Ultrafast and Durable Sodium Storage

Li,

Zhang

et al. 2024

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Phase engineering is an effective strategy for modulating the electronic structure and electron transfer mobility of cobalt selenide (CoSe2) with remarkable sodium storage. Nevertheless, it remains challenging to improve fast‐charging and cycling performance. Herein, a heterointerface coupling induces phase transformation from cubic CoSe2 to orthorhombic CoSe2 accompanied by the formation of MoSe2 to construct a CoSe2/MoSe2 heterostructure decorated with N‐doped carbon layer on a 3D graphene foam (CoSe2/MoSe2@NC/GF). The incorporated Mo cations in the bridged o‐CoSe2/MoSe2 not only act an electron donor to regulate charge‐spin configurations with more active electronic states but also trigger the upshift of d/p band centers and a decreased ∆d‐p band center gap, which greatly enhances ion adsorption capability and lowers the ion diffusion barrier. As expected, the CoSe2/MoSe2@NC/GF anode demonstrates a high‐rate capability of 447 mAh g−1 at 2 A g−1 and an excellent cyclability of 298 mAh g−1 at 1 A g−1 over 1000 cycles. The work deepens the understanding of the elaborate construction of heterostructured electrodes for high‐performance SIBs.

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Rational design of metal selenides nanomaterials for alkali metal ion (Li+/Na+/K+) batteries: current status and perspectives

Sun,

Xu,

Wang

et al. 2024

Rare Met.

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Highly dispersive CoSe₂ nanoparticles encapsulated in carbon nanotube-grafted multichannel carbon fibers as advanced anodes for sodium-ion half/full batteries

Abstract: Transition metal selenides hold great promise as anode materials for obtaining excellent sodium ion batteries. However, the volume expansion effect during charging and discharging severely affects its application. In response,...

Cited by 16 publications

References 47 publications

Construction of Sugar‐Gourd‐Shaped Carbon Nanofibers Embedded with Heterostructured Zinc‐Cobalt Selenide Nanocages for Superior Potassium‐Ion Storage

Construction of Sugar‐Gourd‐Shaped Carbon Nanofibers Embedded with Heterostructured Zinc‐Cobalt Selenide Nanocages for Superior Potassium‐Ion Storage

Electron‐Spin Regulation Driving Heterointerface Electron Distribution and Phase Transition toward Ultrafast and Durable Sodium Storage

Rational design of metal selenides nanomaterials for alkali metal ion (Li+/Na+/K+) batteries: current status and perspectives

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Highly dispersive CoSe2 nanoparticles encapsulated in carbon nanotube-grafted multichannel carbon fibers as advanced anodes for sodium-ion half/full batteries

Abstract: Transition metal selenides hold great promise as anode materials for obtaining excellent sodium ion batteries. However, the volume expansion effect during charging and discharging severely affects its application. In response,...

Cited by 16 publications

References 47 publications

Construction of Sugar‐Gourd‐Shaped Carbon Nanofibers Embedded with Heterostructured Zinc‐Cobalt Selenide Nanocages for Superior Potassium‐Ion Storage

Construction of Sugar‐Gourd‐Shaped Carbon Nanofibers Embedded with Heterostructured Zinc‐Cobalt Selenide Nanocages for Superior Potassium‐Ion Storage

Electron‐Spin Regulation Driving Heterointerface Electron Distribution and Phase Transition toward Ultrafast and Durable Sodium Storage

Rational design of metal selenides nanomaterials for alkali metal ion (Li+/Na+/K+) batteries: current status and perspectives

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Highly dispersive CoSe₂ nanoparticles encapsulated in carbon nanotube-grafted multichannel carbon fibers as advanced anodes for sodium-ion half/full batteries