题目1：Analysis of carbon edge sites and the understanding of carbon structure in high-temperature treated carbons and graphite

　　报告人：Prof. Takashi Kyotani
　　　　　（Institute for Multidisciplinary Research for Advance Materials,
　　　　　　Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan）

　　摘要：By using non-graphitizable and graphitizable carbons prepared from poly(furfulyl alcohol) and poly(vinyl chloride), respectively, we try to determine the number of carbon edge sites by analyzing their hydrogen content, the amounts of surface oxygen complexes and localized spins. In addition, the average sizes of graphene layers in these carbons are estimated from the total number of edge sites. This analysis suggests to us that the actual size in the poly(furfulyl alcohol)-derived carbons is much larger than the size detected with transmission electron microscopy and we should discard the classical view of the structure of non-graphitizable carbons such as the Franklin model. Moreover, we make a similar analysis on natural graphite powder to detect a trace amount of edge sites and try to understand its carbon structure.

　　题目2：Application of carbon alloy catalysts to material-energy conversion systems

　　报告人：Prof. Jun-ichi Ozaki
　　　　　（Gunma University, Japan）

　　摘要：The launch of the fuel cell vehicle in December 2014 has moved Japanese society into the era of hydrogen energy. For the effective use of hydrogen energy, development of technologies producing, storing and utilizing hydrogen are urgent issues. Our aim is to create carbon alloy catalysts to cover the above subjects of applied science, where carbon alloy is a material designing concept with the introduction of hetero elements to carbon materials as well as of different hybridized carbon atoms to the conventional sp2 carbon systems. My presentation will mainly focus on the carbon alloy catalysts for cathode catalyst of polymer electrolyte fuel cells (PEFCs), including the construction of the carbon alloy catalysts, the exploration of active sites. 

　　时间：2015年3月26日（周四）14:00-16:45

　　地点：李薰楼468会议室

　　欢迎参加！