화학공학소재연구정보센터
Journal of the American Chemical Society, Vol.139, No.6, 2168-2171, 2017
Persulfurated Coronene: A New Generation of "Sulflower"
We report the first synthesis of a persulfurated polycyclic aromatic hydrocarbon (PAH) as a next generation "sulflower." In this novel PAH, disulfide units establish an all-sulfur periphery around a coronene core. The structure, electronic properties, and redox behavior were investigated by microscopic, spectroscopic and electrochemical methods and supported by density functional theory. The sulfur-rich character of persulfurated coronene renders it a promising cathode material for lithium sulfur batteries, displaying a high capacity of 520 mAh g(-1) after 120 cycles at 0.6 C with a high-capacity retention of 90%.