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-Falak Shah and Shival Trivedi
hydrolysis for energy storage
hydrolysis for energy storage
hydrolysis for energy storage
   Storing electrical energy
   Pros and cons of techniques
   What is hydrolysis
   Why hydrolysis method
   Cobalt phosphate catalysis
   Hydrogen storage
   Hydrogen as a fuel
   Safety and limitations
   Practical Scenario
   Two billion people on earth do not have
    electricity.
   Global energy need driven by 3 billion low
    energy users in the non legacy world will
    roughly double by midcentury.
   New R&D needed to provide the world with
    the “fast food” equivalent of energy systems.
   Grid parity, fly-wheel, pumped
    water, compressed air,Li-ion
    batteries, ultracapacitors
hydrolysis for energy storage
      BATTERIES      COMPRESSED AIR     FLYWHEEL
   Ultracapacitors    Pumped water
     High             Largest          Compact
     efficiency       capacity of
                                       Light Weight
     Easy             electricity
                      Fast start-up    High energy
     availability                      capacity




     Less energy                       High
                       Geological
                       structure       Centrifugal
     density
                       reliance        force
     Fluctuations                      Not economical
                       Soil erosion
     in supply
hydrolysis for energy storage
hydrolysis for energy storage
hydrolysis for energy storage
hydrolysis for energy storage
hydrolysis for energy storage
    When the input devices produce more energy than
     is required by the load, the excess energy is
     converted by an electrolyzer to electrolytic
     hydrogen.
   H2O → ½ O2 + H2

   Conversely, during a time of input energy
    deficit, this process is reversed and the hydrogen
    produced earlier is reconverted to electrical energy
    through a fuel cell.
    ◦ Anode Reaction: 2H2 + 2O–2 → 2H2O + 4e–
    ◦ Cathode Reaction: O2 + 4e– → 2O–2
hydrolysis for energy storage
hydrolysis for energy storage
   Energy density of H2 is ≥1k times larger than
    the upper limit of battery storage capacity.
   Hydrogen can be used as a fuel for portable
    (vehicles) or stationary energy generation.
   Totally void of Carbon emissions .
   Scientist James Barber of Imperial College
    London hailed this as “enormous implications
    for the future prosperity of humankind.”
hydrolysis for energy storage
   Inspired by photosynthesis to develop
    photoelectrolysis. Sunlight to split water.
   Catalyst consisting of cobalt
    metal, phosphate and an electrode, placed in
    water.
   Works at room temperature, in neutral pH
    water, and easy to set up.
   The cobalt oxygen-evolving catalyst (Co-
    OEC) can use an energy input from a
    photoanode or photovoltaic.
hydrolysis for energy storage
   Solar Energy splitting water into hydrogen
    and oxygen for fuel_ Daniel Nocera, MIT
    [MIRROR].flv
• The hydrogen will be stored in two 0.47
  cubic meter(125 gallon) propane tanks, and
  the oxygen will be stored in one propane
  tank.
• The produced hydrogen gas is pressurized
  by the electrolyzer to its maximum rated
  pressure.
• Hydro-electrical power from dams, wind-
  energy and solar energy sources can all be
  fitted with hydrogen electrolysis units in
  order to produce enough hydrogen.
   No greenhouse gases emitted.
   Zero emission in vehicles.
   Calorific value is
hydrolysis for energy storage
hydrolysis for energy storage
   Tanks are repeatedly fast-filled using real gas
    and emptied slowly for testing.(cycle test)
   The tank is monitored for permeation rates at
    700 bar pressure.(permeability test)
   Hydrogen sensors for testing leaks.
Hydrogen storage testing at European Commission Joint
Research Centre-Institute of energy.
hydrolysis for energy storage
   Matthew W. Kanan, Yogesh Surendranath and
    Daniel G. Nocera Chem. Soc. Rev., 2009, 38, 109-
    1 14
   How to Store Excess Electricity by Jon r. Luoma
    Yale Env. 360,2010
   Report of basic energy sciences published by
    office of science ,US department of energy.
   Summary of electrolytic hydrogen production,
    NREL, September 2004
   Hydrogen Safety in Storage and Transport, Pietro
    Moretto ,European Commission Joint Research
    Centre

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hydrolysis for energy storage

  • 1. -Falak Shah and Shival Trivedi
  • 5. Storing electrical energy  Pros and cons of techniques  What is hydrolysis  Why hydrolysis method  Cobalt phosphate catalysis  Hydrogen storage  Hydrogen as a fuel  Safety and limitations  Practical Scenario
  • 6. Two billion people on earth do not have electricity.  Global energy need driven by 3 billion low energy users in the non legacy world will roughly double by midcentury.  New R&D needed to provide the world with the “fast food” equivalent of energy systems.  Grid parity, fly-wheel, pumped water, compressed air,Li-ion batteries, ultracapacitors
  • 8. BATTERIES COMPRESSED AIR FLYWHEEL  Ultracapacitors Pumped water High Largest Compact efficiency capacity of Light Weight Easy electricity Fast start-up High energy availability capacity Less energy High Geological structure Centrifugal density reliance force Fluctuations Not economical Soil erosion in supply
  • 14. When the input devices produce more energy than is required by the load, the excess energy is converted by an electrolyzer to electrolytic hydrogen.  H2O → ½ O2 + H2  Conversely, during a time of input energy deficit, this process is reversed and the hydrogen produced earlier is reconverted to electrical energy through a fuel cell. ◦ Anode Reaction: 2H2 + 2O–2 → 2H2O + 4e– ◦ Cathode Reaction: O2 + 4e– → 2O–2
  • 17. Energy density of H2 is ≥1k times larger than the upper limit of battery storage capacity.  Hydrogen can be used as a fuel for portable (vehicles) or stationary energy generation.  Totally void of Carbon emissions .  Scientist James Barber of Imperial College London hailed this as “enormous implications for the future prosperity of humankind.”
  • 19. Inspired by photosynthesis to develop photoelectrolysis. Sunlight to split water.  Catalyst consisting of cobalt metal, phosphate and an electrode, placed in water.  Works at room temperature, in neutral pH water, and easy to set up.  The cobalt oxygen-evolving catalyst (Co- OEC) can use an energy input from a photoanode or photovoltaic.
  • 21. Solar Energy splitting water into hydrogen and oxygen for fuel_ Daniel Nocera, MIT [MIRROR].flv
  • 22. • The hydrogen will be stored in two 0.47 cubic meter(125 gallon) propane tanks, and the oxygen will be stored in one propane tank. • The produced hydrogen gas is pressurized by the electrolyzer to its maximum rated pressure. • Hydro-electrical power from dams, wind- energy and solar energy sources can all be fitted with hydrogen electrolysis units in order to produce enough hydrogen.
  • 23. No greenhouse gases emitted.  Zero emission in vehicles.  Calorific value is
  • 26. Tanks are repeatedly fast-filled using real gas and emptied slowly for testing.(cycle test)  The tank is monitored for permeation rates at 700 bar pressure.(permeability test)  Hydrogen sensors for testing leaks.
  • 27. Hydrogen storage testing at European Commission Joint Research Centre-Institute of energy.
  • 29. Matthew W. Kanan, Yogesh Surendranath and Daniel G. Nocera Chem. Soc. Rev., 2009, 38, 109- 1 14  How to Store Excess Electricity by Jon r. Luoma Yale Env. 360,2010  Report of basic energy sciences published by office of science ,US department of energy.  Summary of electrolytic hydrogen production, NREL, September 2004  Hydrogen Safety in Storage and Transport, Pietro Moretto ,European Commission Joint Research Centre