Induced bimetallic sulfide growth with reduced graphene oxide for high-performance sodium storage

Yuxin Zhang; Yuhong Jin; Yuanyuan Song; Hao Wang; Mengqiu Jia

doi:10.1016/j.jcis.2023.03.207

Induced bimetallic sulfide growth with reduced graphene oxide for high-performance sodium storage

J Colloid Interface Sci. 2023 Jul 15:642:554-564. doi: 10.1016/j.jcis.2023.03.207. Epub 2023 Apr 3.

Authors

Yuxin Zhang¹, Yuhong Jin², Yuanyuan Song¹, Hao Wang³, Mengqiu Jia⁴

Affiliations

¹ State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, PR China.
² Key Laboratory for New Functional Materials of Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, PR China. Electronic address: jinyh@bjut.edu.cn.
³ Key Laboratory for New Functional Materials of Ministry of Education, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, PR China.
⁴ State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, PR China. Electronic address: jiamq@mail.buct.edu.cn.

PMID: 37028162
DOI: 10.1016/j.jcis.2023.03.207

Abstract

Metal sulfide has been considered an ideal sodium-ion battery (SIB) anode material based on its high theoretical capacity. Nevertheless, the inevitable volume expansion during charge-discharge processes can lead to unsatisfying electrochemical properties, which limits its further large-scale application. In this contribution, laminated reduced graphene oxide (rGO) successfully induced the growth of SnCoS₄ particles and self-assembled into a nanosheet-structured SnCoS₄@rGO composite through a facile solvothermal procedure. The optimized material can provide abundant active sites and facilitate Na⁺ ion diffusion due to the synergistic interaction between bimetallic sulfides and rGO. As the anode of SIBs, this material maintains a high capacity of 696.05 mAh g^-1 at 100 mA g^-1 after 100 cycles and a high-rate capability of 427.98 mAh g^-1 even at a high current density of 10 A g^-1. Our rational design offers valuable inspiration for high-performance SIB anode materials.

Keywords: Bimetallic sulfides; Rate capability; Reduced graphene oxide; SnCoS(4); Sodium-ion batteries.