Doping effects on hydrogen storage properties of graphene

Title : Doping effects on hydrogen storage properties of graphene

Abstract:

Hydrogen energy has been regarded as the mordern trends towards future energy resource. Above all, hydrogen storage is the most critical aspect of hydrogen energy utilization system. Graphene, as an outstanding representative of carbon-based materials, has become the hot spot for hydrogen storage due to its unique structure and properties. In my own work, grand canonical Monte Carlo method is adopted to investigate the hydrogen storage properties of graphene. The influence of Li doping on the hydrogen storage properties of graphene are analyzed and discussed. It is found that doping with Li has no obvious effects on physical adsorption of H2. In room temperature, doping with Li has occupied the position which should absorb hydrogen, thus resulted into a sharpe decrease in gravimetric uptake and volumetric uptake of graphene. Additionally, the more doping with Li, the more decrease in gravimetric uptake and volumetric uptake. However, gravimetric uptake and volumetric uptake can rise slightly, when doping graphene with Li at low temperature (77K) and high pressure (6000kPa)

Biography:

Angyang Yu studied physics at Dalian University of Technology (China) and obtained his B.Sc. in 2003. He received his M.Sc. in 2006 after conducting his master thesis on molecular reaction dynamics in Dalian Institute of Chemical Physics, Chinese Academy of Sciences. After obtaining his Ph.D. degree at Jilin University in China, he was awarded a Postdoctor's Fellowship to study titanium alloys' oxidation at Institute of Metal Research, Chinese Academy of Sciences. His research interests include calculations of molecular spectra, chemical kinetics, molecular excited states, molecular reaction dynamics and engineering alloy design.