Three-phase Sn-based heterostructure nanoparticles anchored on N-doped graphene as a promising anode for lithium/sodium storage

• Published in: JOURNAL OF ELECTROANALYTICAL CHEMISTRY
• Main Authors: Hu, Ting; Abidin, Shahriman Zainal; Hassan, Oskar Hasdinor; VetoVermol, Verly; Zhao, Xiaojun
• Format: Article
• Language: English
• Published: ELSEVIER SCIENCE SA 2024
• Subjects: Chemistry; Electrochemistry
• Online Access: https://www-webofscience-com.uitm.idm.oclc.org/wos/woscc/full-record/WOS:001173763400001
• ISSN: 1572-6657; 1873-2569
• DOI: 10.1016/j.jelechem.2024.118063

Microstructure modulation by phase engineering induces electrode materials to exhibit excellent energy storage performance due to their adjustable surface/ interface and electronic characteristics. For tin dioxide (SnO2), effective strategies for adjusting their microstructure properties are still lacking. Herein, 2D flexible N-doped graphene (NG) is rationally integrated with SnO2/SnS/Sn heterostructure via hydrothermal and subsequent partial in -situ vulcanization, in which the SnO2/SnS/Sn nanoparticles are tightly anchored on NG network (SnO2/SnS/Sn@NG). The unique SnO2/SnS/Sn heterostructures with modulated electronic properties can induce accelerated charge transfer kinetics and enhanced ions diffusion/adsorption capacities. The hierarchical structure with a large surface area along with nanocomponents can offer better permeability, more available charge storage sites of active material, and a stable electrochemical framework. As expected, the SnO2/SnS/Sn@NG heterostructure as an anode for lithium-ion battery exhibits an excellent charge capacity of 748 mAh g 1 at 0.2 A g 1, long-term cyclic stability of 507 mAh g 1 at 1 A g 1 for 800 cycles, and high-rate capability with of 476 mAh g 1 at 5 A g 1. Moreover, the anode for sodium-ion battery also shows excellent cyclic stability and rate capability.