Method for storing hydrogen, and related articles and systems
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United States of America Patent
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Jul 6, 2010
Grant Date -
Aug 2, 2007
app pub date -
Jan 30, 2006
filing date -
Jan 30, 2006
priority date (Note) -
Expired
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Abstract
A method for storing hydrogen is described. The hydrogen is infused into hollow spheres. The spheres are made from a polymer which has a tensile strength sufficient to contain hydrogen under selected internal pressure conditions; and has a permeation coefficient which can be adjusted under variable humidity conditions. Adjustment of the humidity level after the hydrogen is infused results in the walls of the spheres becoming impermeable to hydrogen. The hydrogen stored in the spheres can then be released at a desired time by readjusting the humidity level. The released hydrogen can be directed to any type of equipment which is fueled by hydrogen or otherwise uses the gas. Related articles and systems are also described.
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