Volume 19, Issue 40 2303742
Research Article

Design of High-Capacity MoS3 Decorated Nitrogen Doped Carbon Coated Cu2S Electrode Structures with Dual Heterogenous Interfaces for Outstanding Sodium-Ion Storage

Yanli Zhou

Corresponding Author

Yanli Zhou

School of Environment and Material Engineering, Yantai University, Yantai, 264005 China

E-mail: [email protected]; [email protected]

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Qiming Li

Qiming Li

School of Environment and Material Engineering, Yantai University, Yantai, 264005 China

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Qi Han

Qi Han

School of Environment and Material Engineering, Yantai University, Yantai, 264005 China

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Lanling Zhao

Lanling Zhao

School of Physics, Shandong University, Jinan, 250100 China

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Yan Liu

Yan Liu

School of Environment and Material Engineering, Yantai University, Yantai, 264005 China

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Yifei Wang

Yifei Wang

School of Environment and Material Engineering, Yantai University, Yantai, 264005 China

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Zhiqi Li

Zhiqi Li

School of Environment and Material Engineering, Yantai University, Yantai, 264005 China

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Caifu Dong

Caifu Dong

School of Environment and Material Engineering, Yantai University, Yantai, 264005 China

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Xueqin Sun

Xueqin Sun

School of Environment and Material Engineering, Yantai University, Yantai, 264005 China

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Jian Yang

Jian Yang

School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100 China

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Xiaoyu Zhang

Xiaoyu Zhang

School of Environment and Material Engineering, Yantai University, Yantai, 264005 China

Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing, Yantai, Shandong, 265503 China

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Fuyi Jiang

Corresponding Author

Fuyi Jiang

School of Environment and Material Engineering, Yantai University, Yantai, 264005 China

E-mail: [email protected]; [email protected]

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First published: 02 June 2023
Citations: 11

Abstract

The hierarchical Cu2S@NC@MoS3 heterostructures have been firstly constructed by the high-capacity MoS3 and high-conductive N-doped carbon to co-decorate the Cu2S hollow nanospheres. During the heterostructure, the middle N-doped carbon layer as the linker facilitates the uniform deposition of MoS3 and enhances the structural stability and electronic conductivity. The popular hollow/porous structures largely restrain the big volume changes of active materials. Due to the cooperative effect of three components, the new Cu2S@NC@MoS3 heterostructures with dual heterogenous interfaces and small voltage hysteresis for sodium ion storage display a high charge capacity (545 mAh g−1 for 200 cycles at 0.5 A g−1), excellent rate capability (424 mAh g−1 at 15 A g−1) and ultra-long cyclic life (491 mAh g−1 for 2000 cycles at 3 A g−1). Except for the performance test, the reaction mechanism, kinetics analysis, and theoretical calculation have been performed to explain the reason of excellent electrochemical performance of Cu2S@NC@MoS3. The rich active sites and rapid Na+ diffusion kinetics of this ternary heterostructure is beneficial to the high efficient sodium storage. The assembled full cell matched with Na3V2(PO4)3@rGO cathode likewise displays remarkable electrochemical properties. The outstanding sodium storage performances of Cu2S@NC@MoS3 heterostructures indicate the potential applications in energy storage fields.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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