To make sodium-ion batteries a realistic option for everyday energy storage, a practicable method is to enhance the kinetics of Na⁺ reactions through the development of structurally stable electrode materials. This study utilizes ternary Sn-based dichalcogenide (SnS_1.5 Se_0.5 ) in the design of electrode material to tackle several issues that adversely hinder the performance and longevity of sodium-ion batteries. First, the incorporation of Se into the SnS structure enhances its electrical conductivity and stability. Second, the ternary composition restricts the formation of intermediates during the desodiation/sodiation process, resulting in better electrode reaction reversibility. Finally, SnS_1.5 Se_0.5 lowers the diffusion barrier of Na, thereby facilitating rapid and efficient ion transport within the electrode material. Moreover, nitrogen and sulfur dual-doped carbon (NS-C) is used to enhance surface chemistry and ionic/electrical conductivity of SnS_1.5 Se_0.5 , leading to a pseudocapacitive storage effect that presents a promising potential for high-performance energy storage devices. The study has successfully developed a SnS_1.5 Se_0.5 /NS-C anode, exhibiting remarkable rate capability and cycle stability, retaining a capacity of 647 mAh g^-1 even after 10 000 cycles at 5 A g^-1 in half-cell tests. In full-cell tests, Na₃ V₂ (PO₄ )₃ //SnS_1.5 Se_0.5 /NS-C delivers a high energy density of 176.6 Wh kg^-1 . In addition, the Na⁺ storage mechanism of SnS_1.5 Se_0.5 /NS-C is explored through ex situ tests and DFT calculations. The findings suggest that the ternary Sn-based dichalcogenides can considerably enhance the performance of the anode, enabling efficient large-scale storage of sodium. These findings hold great promise for the advancement of high-performance energy storage devices for practical applications.

#	Concept	H-Index	Publications	Citations
1	Engineering	2	2	54
2	Materials Science	2	2	54
3	Applied Physics	1	1	31
4	Chemical Engineering	1	1	23
5	Chemistry	1	1	23

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