Energy Conversion and Storage
Seminars
Hydrogen Storage: Status, Perspectives, and Industrial Applications
This seminar covers applications for hydrogen storage, the good and “less good” news about hydrogen storage, Hydrogen storage options, matching applications with options: Chemical hydrides, aerospace applications.
Charge Transport in Perovskite Solar Cells Visualized using Ultrafast Microscopy
We have developed transient absorption microscopy (TAM) with a time resolution of ~ 200 fs and ~ 50 nm spatial precision to directly visualize hot carrier propagating in hybrid organic-inorganic perovskite (CH3NH3PbI3) thin films and single crystals. Three distinctive transport regimes are observed. 1) quasiballistic transport, 2) nonequilibrium transport, and 3) diffusive transport. The nonequilibrium transport persisted over tens of picoseconds and ~ 600 nanometers before reaching the diffusive transport limit. These results suggest a potential for hot carrier based devices, in which the Shockley-Queisser limit could be overcome.
Metal Combustion for Energy, and Energetic Material Applications
This seminar looks at metal combustion as an alternative to hydrocarbon fuels and other clean energy options. Basics of combustion are presented, along with the metal-fuel cycle, metal-air burner concept, chemical looping combustion (CLC), effects of different parameters, and some energetic (explosive!) examples.