Study of performance improvements in Mo_1-xCr_xS₂ (x=0, 0.5) sodium-ion battery

ChunChuen Yang^1*, Yung-Hsiang Tung¹, Cheng-Wei Kao¹, Irish Valerie B. Maggay², Wei-Ren Liu²

¹Department of Physics, Chung Yuan Christian University, Chung-Li, Taiwan
²Department of Chemical Engineering, Chung Yuan Christian University, Chung-Li, Taiwan

* Presenter:ChunChuen Yang, email:chunchuenyang@gmail.com

MoS₂ is a good host material for sodium ions intercalation reaction and potential in making anode material of sodium-ion battery usage. However, specific charge capacity and cycling times are still worse than those of carbon-based ion batteries. Here we studied the lightly manganese-doped MoS₂ nanosheets and improved the specific charge capacities and ion diffusion coefficient. The specific charge capacity recovery from the last high C-rate cycle is also better than the undoped one. The lightly Mn dopants increased charge mobility and capacity. This study reveals a simple way to enhance the sodium ion battery's performance by slightly Mn-doped in MoS₂ and might be used in massive production.

Keywords: MoS2, sodium ion battery, charge mobility, charge capacity