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

• Published in: Nature communications Vol. 13; no. 1; p. 663
• Main Authors: Liu, Yangjie, Hu, Xiang, Li, Junwei, Zhong, Guobao, Yuan, Jun, Zhan, Hongbing, Tang, Yongbing, Wen, Zhenhai
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 03.02.2022; Nature Publishing Group; Nature Portfolio
• Subjects: 140/133; 140/146; 147/135; 147/143; 639/301/357/1016; 639/4077/4079; 639/4077/4079/891; 639/638/161; Anode effect; Aqueous electrolytes; Batteries; Carbon; Coatings; Electrochemistry; Electrode materials; Electrodes; Electrolytic cells; Energy storage; Humanities and Social Sciences; Ion storage; Life span; multidisciplinary; Nanotechnology; Nanowires; Nonaqueous electrolytes; Science; Science (multidisciplinary); Sodium; Storage batteries
• ISSN: 2041-1723; 2041-1723
• DOI: 10.1038/s41467-022-28176-0

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 x Te 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 1.5 Te 0.5 @C nanocables are investigated as negative electrode active material in combination with expanded graphite at the positive electrode and NaPF 6 -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. Sodium-based dual-ion batteries are promising electrochemical energy storage devices. Here, the authors report a source-template synthetic strategy to prepare carbon-coated MoS 1.5 Te 0.5 nanocables and their use as anode active materials in Na-based dual ion cells.