|About this Abstract
||MS&T21: Materials Science & Technology
||Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
||A Comparative Study of Tantalum Disulfide as Lithium-ion and Potassium-ion Batteries
||Davi Marcelo Soares, Gurpreet Singh
|On-Site Speaker (Planned)
||Davi Marcelo Soares
Nowadays technological products have an ever-increasing demand for higher energy density batteries. In this scenario, the development of high-performance electrode materials requires understanding of the intercalation processes for ions such as Li+ and K+. Tantalum disulfide (TaS2) is a layered polymorph transition metal dichalcogenides (TMD) species that presents metallic conductivity in its 2H phase. Here we report 2H-TaS2 as electrode material for lithium- (LIB) and potassium-ion (PIB) batteries in a comprehensive electrochemical study. Our findings show that as LIB electrode material, TaS2 presented first cycle charge specific capacity of LIB is 344 mAh g-1. Yet as a PIB electrode material, TaS2 presented cycling stability with capacity decay of 0.23% per cycle within 40 cycles at 50 mA g-1. To summarize, this works consists of an initial study of charge storage mechanism of Li+ and K+ in 2H-TaS2 to enable further developments in the field for this intriguing TMD species.