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Hydrogen Energy - PowerPoint PPT Presentation

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Hydrogen Energy

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  1. Hydrogen Energy Student: Ao Teng Instructor: Elbio Dagotto The University of Tennessee Department of Physics 2010.4.20

  2. Outline • History • Properties • Technologies • Advances in Hydrogen Storage • Conclusion

  3. “Hydrogen Economy” (1971) J.O’M. Bockris

  4. National Hydrogen Fuel Initiative (2003)

  5. (2J+1)p:(2J+1)o=1:3 at excited state Ortho-H2 Para-H2 (dominant at LT) Loc. cit. The bond dissociation energy : 458 kJ mol-1 The bond length : 74 pm

  6. Advantages High heat of combustion per unit weight No pollution Recyclable Hoover Dam Great Salt Lake

  7. Drawbacks Highly flammable Embrittlement Low density 4 kg Hydrogen Hindenburg Disaster Stainless steel (a)before(b)after exposure to H2

  8. Hydrogen Technologies • Hydrogen Production • Hydrogen Storage/Delivery • Energy Conversion (Fuel Cells)

  9. Hydrogen Production Electrolysis with renewable energy Bio-hydrogen (Green algae) High-Temperature water splitting Wyoming

  10. Hydrogen Storage/Delivery

  11. Energy Conversion(Fuel Cells)

  12. Advances in Hydrogen Storage • Nano-structured Storage Material • Analysis and Characterization Techniques a. Inelastic Neutron Scattering b. Synchrotron Radiation

  13. Nano-structured Storage Material

  14. Analysis and Characterization Techniques Neutron Scattering Sung-Min Choi et al., KAIST 2006

  15. Analysis and Characterization Techniques Synchrotron Radiation Tabbetha A. Dobbins Institute for Micromanufacturing, Louisiana Tech University, Ruston, LA

  16. When will it come to our life?