Volume 19, Issue 14 2206563
Research Article

Terminal Group-Oriented Self-Assembly to Controllably Synthesize a Layer-by-Layer SnSe2 and MXene Heterostructure for Ultrastable Lithium Storage

Xianglong Kong

Xianglong Kong

College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin, 150001 P. R. China

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Xiaohan Zhao

Xiaohan Zhao

College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin, 150001 P. R. China

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Chen Li

Chen Li

College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin, 150001 P. R. China

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Zhuoming Jia

Zhuoming Jia

College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin, 150001 P. R. China

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Chengkai Yang

Corresponding Author

Chengkai Yang

College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108 P. R. China

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

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Zhuoyan Wu

Zhuoyan Wu

Comprehensive Energy Research Center, Institute of Science and Technology, China Three Gorges Corporation, Beijing, 100038 P. R. China

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Xudong Zhao

Xudong Zhao

College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin, 150001 P. R. China

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Ying Zhao

Ying Zhao

College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin, 150001 P. R. China

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Fei He

Fei He

College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin, 150001 P. R. China

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Yueming Ren

Yueming Ren

College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin, 150001 P. R. China

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Piaoping Yang

Corresponding Author

Piaoping Yang

College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin, 150001 P. R. China

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

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Zhiliang Liu

Corresponding Author

Zhiliang Liu

College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin, 150001 P. R. China

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

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First published: 15 January 2023
Citations: 16

Abstract

Heterostructured materials integrate the advantages of adjustable electronic structure, fast electron/ions transfer kinetics, and robust architectures, which have attracted considerable interest in the fields of rechargeable batteries, photo/electrocatalysis, and supercapacitors. However, the construction of heterostructures still faces some severe problems, such as inferior random packing of components and serious agglomeration. Herein, a terminal group-oriented self-assembly strategy to controllably synthesize a homogeneous layer-by-layer SnSe2 and MXene heterostructure (LBL-SnSe2@MXene) is designed. Benefitting from the abundant polar terminal groups on the MXene surface, Sn2+ is induced into the interlayer of MXene with large interlayer spacing, which is selenized in situ to obtain LBL-SnSe2@MXene. In the heterostructure, SnSe2 layers and MXene layers are uniformly intercalated in each other, superior to other heterostructures formed by random stacking. As an anode for lithium-ion batteries, the LBL-SnSe2@MXene is revealed to possess strong lithium adsorption ability, the small activation energy for lithium diffusion, and excellent structure stability, thus achieving outstanding electrochemical performance, especially with high specific capacities (1311 and 839 mAh g−1 for initial discharge and charge respectively) and ultralong cycling stability (410 mAh g−1 at 5C even after 16 000 cycles). This work conveys an inspiration for the controllable design and construction of homogeneous layered heterostructures.

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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