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  "documentTitle": "Hydrogen applications and business models",
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      "text": "Currently, they are being re-examined for niche applications where stability is a key requirement, such as the military.",
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      "text": "Pros: Low pressure operation, Safety, Larger energy capacity",
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      "text": "Volumetric density: 4,200",
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      "text": "Certain metals bind very strongly with hydrogen, forming a metal hydride compound. Under low temperature or at high pressure, hydrogen gas molecules adhere to the surface of the metal and break down into hydrogen atoms, which penetrate the metal crystal to form a solid metal hydride. When the metal hydride is heated, the metal-hydrogen bonds break, and hydrogen atoms migrate to the surface where they recombine into hydrogen molecules.",
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      "text": "Sources: The Future of Hydrogen, International Energy Agency, 2019; National Hydrogen Roadmap, Commonwealth Scientific and Industrial Research Organisation, 2018; Kearney Energy Transition Institute analysis",
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      "text": "Metal hydrides operate at low pressure and improve hydrogen-handling safety but must still demonstrate their economic feasibility",
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