ArticleAuthors: Mai, Thanh-Tung; Vu, Duc-Luong; Huynh, Dang- Chinh; Wu, Nae-Li; Le, Anh-Tuan (2019)
In this work, we developed highly porous activated carbon (AC) materials with micro/meso porosity
through carbonizing rice husk and treating them with K2CO3. Elemental sulfur was then loaded to the
micropores through a solution infiltration method to form rice husk-derived activated carbon (RHAC)@S
composite materials. The as-prepared RHAC@S composites with 0.25 mg cm 1 and 0.38 mg cm 1 of
sulfur loading were tested as cathodes for lithium-sulfur (Li-S) batteries. The 0.25 mg cm 1 sulfur loaded
sample showed an initial discharge capacity of 1080 mA h/g at a 0.1 C rate. After 50 cycles of charge/
discharge tests at the current density of 0.2 C, the reversible capacity is maintain... 
