Size-controlled Chevrel Mo6S8 as Cathode Material for Mg Rechargeable Battery

• Published in: Bulletin of the Korean Chemical Society pp. 3033 - 3038
• Main Authors: Anna Ryu, 박민식, Woosuk Cho, 김점수, 김영준
• Format: Journal Article
• Language: English
• Published: 대한화학회 20.10.2013
• Subjects: 화학
• ISSN: 0253-2964; 1229-5949
• DOI: 10.5012/bkcs.2013.34.10.3033

Nanoscale Chevrel Mo6S8 powders are synthesized by molten salt synthesis. Synthesized Mo6S8 powders have different mean particle sizes which are dependent on a ratio of salt to precursor. The particle sizes of Mo6S8 powders changes along with the ratio increase. Mo6S8 (6:1) demonstrates the best electrochemical characteristics among the synthesized Mo6S8 powders although the Mo6S8 (4:1) has the smallest particle size. Mo6S8 (6:1) shows a reversible capacity of 83.9 mAhg−1, which is 27.5% and 33% improved value over Mo6S8 (2:1) and Mo6S8 (4:1) at a current density of 0.2C, respectively. The superior electrochemical properties of Mo6S8 (6:1) are attributed to the balanced particle size which provides proper contact area with electrolyte and the shortened Mg2+ diffusion length. The Mo6S8 (4:1) has the smallest particle size but further reduction of particle size from Mo6S8 (6:1) is not advantageous. KCI Citation Count: 11