MSE Seminar Series: Hui Wu
Friday, March 1, 2013
1:00 p.m.-2:00 p.m.
Room 2110 Chemical and Nuclear Engineering Bldg.
Novel Hydrogen Storage Materials and Related Structural Studies
NIST Center for Neutron Research
National Institute of Standards and Technology, and
Department of Materials Science and Engineering
University of Maryland
Successful development of hydrogen as an energy carrier will simultaneously reduce the dependence on fossil fuel and emissions of greenhouse gases and pollutants. This is especially critical in this century with increasing concerns about energy security and global warming. One of the major challenges to widespread use of hydrogen is the lack of storage materials with suitable on-board operating capacities and properties for fuel-cell vehicular applications. In this talk, I am going to present our recent work on developing novel high-hydrogen-capacity complex metal hydrides and chemical hydrides for hydrogen storage. Particularly, I will discuss our efforts to rationally search for Hδ+/ Hδ- co-existing B-N compounds, including metal amidoboranes (M-NH2BH3), borohydride ammonia borane complexes (MBH4-NH3BH3), and metal hydrazinoboranes (MN2H3BH3). These materials exhibit remarkable dehydrogenation performances compared to conventional metal hydrides. The talk will focus on the structural studies of these materials, highlighting various aspects of crystal structure determination and crystal chemistry. The rich information obtained from the structural analysis and its implications for hydrogen storage will also be discussed.