Synthesis of Copper‐Substituted CoS2@CuxS Double‐Shelled Nanoboxes by Sequential Ion Exchange for Efficient Sodium Storage

The construction of hybrid architectures for electrode materials has been demonstrated as an efficient strategy to boost sodium‐storage properties because of the synergetic effect of each component. However, the fabrication of hybrid nanostructures with a rational structure and desired composition f...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2020-02, Vol.59 (7), p.2644-2648
Main Authors: Fang, Yongjin, Luan, Deyan, Chen, Ye, Gao, Shuyan, Lou, Xiong Wen (David)
Format: Article
Language:English
Subjects:
Cobalt sulfide
Composition effects
Copper
Electrochemical analysis
Electrochemistry
Electrode materials
Fabrication
Ion exchange
metal sulfides
Metal-organic frameworks
nanoboxes
Nanostructure
Sodium
sodium-ion batteries
Storage
Substitutes
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Summary:The construction of hybrid architectures for electrode materials has been demonstrated as an efficient strategy to boost sodium‐storage properties because of the synergetic effect of each component. However, the fabrication of hybrid nanostructures with a rational structure and desired composition for effective sodium storage is still challenging. In this study, an integrated nanostructure composed of copper‐substituted CoS2@CuxS double‐shelled nanoboxes (denoted as Cu‐CoS2@CuxS DSNBs) was synthesized through a rational metal–organic framework (MOF)‐based templating strategy. The unique shell configuration and complex composition endow the Cu‐CoS2@CuxS DSNBs with enhanced electrochemical performance in terms of superior rate capability and stable cyclability. Storage boxes: Copper‐substituted CoS2@CuxS double‐shelled nanoboxes were synthesized through a multistep metal–organic framework (MOF)‐based templating strategy (see picture). With their unique shell architecture and complex composition, these double‐shelled nanoboxes exhibited enhanced sodium‐storage performance in terms of high reversible capacity, superior rate capability, and long cycle life.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201912924