일 시 : 2014년 6월 10일, 오후 4:30

장 소 : 500동 311호

- Abstract-

We will present our recent work on novel sulfur utilization chemistry for for polymeric materials. Elemental sulfur is manufactured at a level of 70 million tons every year, which is primarily produced via hydrodesulfurization of crude petroleum. However, there are only a few utilization technologies for sulfur, hence, over 6 million tons of elemental sulfur is generated in excess, which creates exciting opportunities to develop new chemistry and processing to utilize sulfur as a feedstock for polymers. We will present our recent efforts in the direct utilization of sulfur to prepare thermosetting polymeric sulfur that exhibit enhanced processing and electrochemical properties. These types of polymeric materials exhibit very high charge capacity again Liinsertion and have tremendous potential as inexpensive, high performance cathodes for Li-S batteries. Furthermore, these sulfur-rich copolymers exhibit unusually high refractive indices (n = 2.0) and can be easily processed in thin films, or molded objects.