Synthesis of novel 1–dimensional structure from Mo6S8 Chevrel phase of electrode for Mg batteries

Abstract

The Chevrel phase (CP) (Mo _6 S _8 ), which is used as an electrode material in Mg rechargeable batteries, has a capacity limit owing to ion insertion and trapping. To address this problem, we modify the wire structure of the CP. Mo _6 S _3 I _6 nanowires, in which iodiene is substituted for Mo _6 S _9 nanowires as infinite CP structures, can be synthesized in various ways. When synthesizing stoichiometrically, an unwanted secondary phase may appear. We solved these problems by reducing the synthesis time. Electrochemical analysis was performed using these nanowires as an active material in Mg batteries.

Keywords

• 1-dimensional CP
• Mo6S8 doped with iodine
• Mo6S3I6 nanowire
• anode
• Mg battery