Constructing Three-Dimensional Porous SnS 2 /RGO as Superior-Rate and Long-Life Anodes for Lithium-Ion Batteries

作者：Haohao Zhang, Mingyuan Pang, Min Yang, Zhen Kong, Jiajia Ye, Chaoyang Sun, Wen He, Wensi Li, Yen Leng Pak, Juan An, Xing Gao, Jibin Song · 发表于：Langmuir · 年份：2025 · DOI：10.1021/acs.langmuir.4c04214 · 被引用次数：10 · 研究领域：Advancements in Battery Materials、Advanced Battery Materials and Technologies、Supercapacitor Materials and Fabrication

Tin-based sulfides, possessing a unique layered structure and a high theoretical capacity, stand as highly prospective contenders for anode materials in lithium-ion batteries (LIBs). Nevertheless, the pronounced volume expansion that occurs during lithium storage and poor capacity retention have limited its progress toward commercialization. Herein, we designed and prepared a SnS 2 /RGO composite with a three-dimensional porous structure by sulfurizing the Sn 6 O 4 (OH) 4 /GO precursor. Through the integration of the structural architecture during the solvent reaction process and the nanomodification during the vulcanization process, the prepared SnS 2 /RGO composite has a porous structure, and the particle size is optimized at 2–5 nm. This structure is conducive to improving the conductivity of electrode materials, increasing reaction active sites, and enhancing the structural stability of electrode materials. Consequently, the synthesized SnS 2 /RGO composite is capable of retaining reversible capacities of 975 and 592 mA h g –1 after 250 cycles at 1.0 and 2.0 A g –1, respectively. Moreover, it exhibits a capacity of 349 mA h g –1 after 1100 cycles at 5.0 A g –1 . This efficient and convenient preparation method provides guidance for enhancing the lithium storage properties of tin-based sulfides.