Electrodeposition of MoS_x: Tunable Fabrication of Sulfur Equivalent Electrodes for High Capacity or High Power

In this study, amorphous MoS_x electrodes were fabricated by a facile one step electrodeposition method as sulfur equivalent cathode structures for lithium based batteries. By modifying the deposition conditions, the physical, chemical, and resulting electrochemical properties of MoS_x were manipulated to achieve either higher energy delivery or higher power delivery. MoS_x deposited at anodic potential (MoS_x-AD) showed a higher initial capacity of 900 mAh g^-1 attributed to its higher sulfur content. In contrast, MoS_x deposited at cathodic potential (MoS_x-CD) exhibited a lower initial capacity of 500 mAh g^-1 with improved cycling stability up to 100 cycles and significantly improved rate capability attributed to its higher conductivity and improved Li⁺ transport properties.