HYDROGEN STORAGE USING CARBON-METAL HYBRID COMPOSITIONS

摘要

PURPOSE: A process is provided for the transport and storage of hydrogen by reversible sorption and containment within carbon-metal hybrid materials. CONSTITUTION: The process for reversibly adsorbing hydrogen gas comprises the steps of bringing a hydrogen-containing gas into contact with a carbon-metal hybrid material under conditions of temperature and partial pressure of hydrogen whereby the carbon-metal hybrid material adsorbs hydrogen gas, and subsequently adjusting the temperature and/or pressure to cause desorption of hydrogen gas from the carbon-metal hybrid material, wherein the carbon-metal hybrid material comprises a substantially graphitic carbon component and a metal or metal alloy component which reversibly reacts with the hydrogen. The process for reversibly storing hydrogen using a carbon-metal hybrid material comprising a substantially graphitic carbon component and a metal or metal alloy component capable of reversibly reacting with hydrogen comprises the steps of bringing a hydrogen-containing gas into contact with carbon-metal hybrid material within a storage vessel at a hydrogen partial pressure from about 14 psia to 2000 psia and a temperature from about 253 K to 473 K whereby the carbon-metal hybrid material adsorbs, thereby storing the hydrogen gas, and subsequently reducing the hydrogen partial pressure to between about 1 psia to 200 psia and increasing the temperature to between about 273 k to 573 K to desorb the hydrogen gas from the carbon-metal hybrid material.