Carbon Hollow Tube-Confined Sb/Sb2S3 Nanorod Fragments as Highly Stable Anodes for Potassium-Ion Batteries

• DOI: 10.1021/acsami.1c16267
• Publication Date: 2021-10-21T08:33:45Z
• Authors: Yuanji Wu; Jiefeng Zheng; Yong Tong; Xi Liu; Yingjuan Sun; Li Niu; Hongyan Li
• Keywords: Nanorod; Carbon fibers; Nanomaterials

Potassium-ion batteries (PIBs) have attracted widespread attention in recent years due to their potential advantages such as low cost and high energy density. However, the large radius of K+ potassium storage capacity some electrode materials limit development. Antimony (Sb)-based are considered be promising anode for PIBs view K potassiation potential. Nonetheless, huge volume variation caused by potassiation/depotassiation often leads failure. Previous works proved that carbon coating nanostructure design important means alleviate effect. Herein, carbon-coating technology were combined prepare a Sb-based nanomaterial with Sb/Sb2S3 hybrid nanorod fragments confined hollow tube (Sb/Sb2S3@CHT). Such is beneficial change hybrids while facilitating kinetics electrochemical reaction. As consequence, Sb/Sb2S3@CHT exhibits rate performance outstanding cycle stability characterized retaining specific 400.9 mA h g-1 after cycling 200 cycles at g-1.