US Patent 7491448 - Reticulated foam-like structure formed of nanoparticles

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This patent from Energy Conversion Devices teaches a new type of hydrogen storage material with improvements in reversible storage capacity leading to reduced weight and more adaptability for automobile hydrogen fuel supply designs. Claim 1 reads:

1. A material comprising:

a nano-particulate reticulated foam-like structure, said structure including particles having a size of 10-200 nanometers, said particles joined together to form a reticulated foam-like structure, said reticulated foam-like structure being similar to the structure of carbon nano-foam; wherein said nano-particulate reticulated foam-like structure comprises a hydroxide.