Low-Pressure High-Capacity Storage System for Sustainable Hydrogen Economy

Tech ID: 24915 / UC Case 2015-135-0

Patent Status

Country Type Number Dated Case
Patent Cooperation Treaty Reference for National Filings WO2016179567 07/20/2017 2015-135
 

Patent Pending

Brief Description

Hydrogen-fueled cell vehicles could gain ground as global researchers develop better processes to produce hydrogen economically from sustainable resources like solar and wind. On an energy-to-weight basis, hydrogen has nearly three times the energy content of gasoline (120 megajoule or MJ, per kilogram or kg, for hydrogen, versus 44 MJ/kg for gasoline). One problem is storing enough hydrogen on-board to achieve a reasonable driving range of 300 to 400 miles. On energy-to-volume basis, hydrogen takes up nearly three times the volume of gasoline (8 MJ/liter for cryogenic liquid hydrogen versus 32 MJ/liter for gasoline). Another problem is related to next-generation solid absorbents like metal hydrides, which typically show weakness in terms of the amount of gas that can be absorbed and delivered. To address these problems, researchers at the University of California, Berkeley, and Lawrence Berkeley National Laboratory, have developed a composite material using nanostructured metal hydrides that is capable of storing three times more hydrogen per volume at room temperature than a comparable cryogenic liquid hydrogen tank. Furthermore, low hydrogen pressures during absorbing and desorbing have been achieved. This represents a significant economic and safety advantage over technologically complex and costly high-pressure (10,000 psi) hydrogen tanks commonly used in mobile hydrogen storage applications today.

Suggested uses

  • Hydrogen gas storage for mobile applications
  • Hydrogen gas storage for stationary applications

Advantages

  • Low-cost, light-weight
  • Low pressure, non-cryogenic
  • Fully reversible absorbing and desorbing cycle
  • Close to room temperature operation
  • Leverages lightweight earth abundant elements

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Inventors

  • Fischer, Felix Raoul

Other Information

Keywords

energy, hydrogen, gasoline, gas, fuel cell, composites, metal hydrides

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