Carbon-coated MoS1.5Te0.5 nanocables for efficient sodium-ion storage in non-aqueous dual-ion batteries

Yangjie Liu; Xiang Hu; Junwei Li; Guobao Zhong; Jun Yuan; Hongbing Zhan; Yongbing Tang; Zhenhai Wen

doi:10.1038/s41467-022-28176-0

Carbon-coated MoS_1.5Te_0.5 nanocables for efficient sodium-ion storage in non-aqueous dual-ion batteries

Nat Commun. 2022 Feb 3;13(1):663. doi: 10.1038/s41467-022-28176-0.

Authors

Yangjie Liu^{1

2}, Xiang Hu^{1

2}, Junwei Li², Guobao Zhong^{1

2}, Jun Yuan^{1

2}, Hongbing Zhan³, Yongbing Tang⁴, Zhenhai Wen⁵

Affiliations

¹ College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, P. R. China.
² CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China.
³ College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, P. R. China. hbzhan@fzu.edu.cn.
⁴ Functional Thin Films Research Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China.
⁵ CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China. wen@fjirsm.ac.cn.

Abstract

Sodium-based dual-ion batteries have received increased attention owing to their appealing cell voltage (i.e., >3 V) and cost-effective features. However, the development of high-performance anode materials is one of the key elements for exploiting this electrochemical energy storage system at practical levels. Here, we report a source-template synthetic strategy for fabricating a variety of nanowire-in-nanotube MS_xTe_y@C (M = Mo, W, Re) structures with an in situ-grown carbon film coating, termed as nanocables. Among the various materials prepared, the MoS_1.5Te_0.5@C nanocables are investigated as negative electrode active material in combination with expanded graphite at the positive electrode and NaPF₆-based non-aqueous electrolyte solutions for dual-ion storage in coin cell configuration. As a result, the dual-ion lab-scale cells demonstrate a prolonged cycling lifespan with 97% capacity retention over 1500 cycles and a reversible capacity of about 101 mAh g^-1 at specific capacities (based on the mass of the anode) of 1.0 A g^-1 and 5.0 A g^-1, respectively.

Abstract

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