Acknowledgement
This work was funded by the Ministry of Education, Korea (PGE093), and the Ministry of Science and ICT of Korea via the KBSI (Grant No. C123000).
DOI QR Code
Synthesis and Electrochemical Performance of Microporous Hollow Carbon from Milkweed Pappus as Cathode Material of Lithium-Sulfur Batteries
- Jun-Ki Kim (Busan Center, Korea Basic Science Institute (KBSI)) ;
- Yunju Choi (Busan Center, Korea Basic Science Institute (KBSI)) ;
- Euh Duck Jeong (Busan Center, Korea Basic Science Institute (KBSI)) ;
-
Sei-Jin Lee
(Jeonju Center, Korea Basic Science Institute (KBSI))
;
- Hyun Gyu Kim (Busan Center, Korea Basic Science Institute (KBSI)) ;
- Jae Min Chung (Division of Plant Resources, Korea National Arboretum) ;
- Jeom-Soo Kim (Department of Chemical Engineering, Dong-A University) ;
- Sun-Young Lee (Secondary Batteries Technology Center, Chungnam Techno Park) ;
-
Jong-Seong Bae
(Busan Center, Korea Basic Science Institute (KBSI))
- Received : 2022.09.20
- Accepted : 2022.10.12
- Published : 20220000
Abstract
Microtube-like porous carbon (MPC) and tube-like porous carbon-sulfur (MPC-S) composites were synthesized by carbonizing milkweed pappus with sulfur, and they were used as cathodes for lithium-sulfur batteries. The morphology and uniformity of these materials were characterized using X-ray powder diffraction, Raman spectroscopy, scanning electron microscopy, transmission electron microscopy with an energy-dispersive X-ray analyzer, thermogravimetric analysis, and X-ray photoelectron spectrometry. The electrochemical performance of the MPC-S cathodes was measured using the charge/discharge cycling performance, C rate, and AC impedance. The composite cathodes with 93.8 wt.% sulfur exhibited a stable specific capacity of 743 mAh g-1 after 200 cycles at a 0.5 C.