All-solid-state lithium battery with sulfur/carbon composites as positive electrode materials

作者：Kinoshita Shunji^*; Okuda Kazuya; Machida Nobuya; Naito Muneyuki; Sigematsu Toshihiko

来源：Solid State Ionics, 2014, 256: 97-102.

DOI：10.1016/j.ssi.2013.12.045

• Sulfur
• Positive electrode materials
• Li/S cell
• Lithium battery
• All-solid-state battery

Sulfur-carbon composites were investigated as positive electrode materials for all-solid-state lithium ion batteries with an inorganic solid electrolyte (amorphous Li3PS4). The elemental sulfur was mixed with Vapor-Grown Carbon Fiber (VGCF) and with the solid electrolyte (amorphous Li3PS4) by using high-energy ball-milling process. The obtained sulfur-VGVF-solid electrolyte composite was used as positive electrode materials of the all-solidstate battery. The composite showed good electrochemical properties as positive electrode materials. The capacity that was calculated on the base of the weight of sulfur was about 1300 mAhg(-1) at room temperature, when the all-solid-state battery was discharged and charged in the voltage range of 0.9 to 2.6 V at a constant current density of 0.1 mAcm(-2). The battery kept the capacity more than 1200 mAhg(-1) even after 50 discharge-charge cycles.

• 出版日期2014-3-1