Patent ID: 8501145
Filing Date: 2013-08-06
Classification: B01J,B82Y,C01B

Abstract:
1. A method for growing carbon nanowalls on a base material including a first end and a second end, wherein said method consists of: mixing a predetermined amount of a hydrocarbon gas with a predetermined amount of one or more non hydrocarbon gases wherein said hydrocarbon gas is an acetylene gas, and wherein said one or more non-hydrocarbon gases are selected from a group consisting of an ammonia gas and a hydrogen gas, and wherein said predetermined amount of said hydrocarbon gas is 20 sccm, and wherein said predetermined amount of said ammonia gas is 80 sccm and wherein said predetermined amount of said hydrogen gas is 100 sccm; preparing said base material by coating said base material with a thin film of a metal catalyst, wherein said metal catalyst is selected from a group consisting of iron, copper, aluminum and combination thereof; placing said prepared base material in a reaction chamber having a first portion and a second portion, wherein said first portion is extended from a first end of said reaction chamber to a first end of said prepared base material; entering said mixed hydrocarbon gas and said one or more non-hydrocarbon gases into said reaction chamber; creating a plurality of first radicals in said reaction chamber based on said predetermined amount of said hydrocarbon gas and said predetermined amount of said one or more non hydrocarbon gases, wherein said plurality of first radicals comprise hydrocarbon radicals and non hydrocarbon radicals, and wherein said step of creating said first radicals consists of heating walls in said reaction chamber by using an external thermal source and wherein said external thermal source is employed around said reaction chamber and wherein said external thermal source is a plurality of thermal elements which are covered by ceramic, and wherein said first radicals are selected from a group consisting of a hydrogen radical, a nitrogen radical, a carbon radical and a combination thereof, wherein said step of creating hydrogen radical, nitrogen radical and carbon radical comprises heating at least one radical source by heating walls and inside area of said reaction chamber by using an electric oven and by making said at least one radical source to contact hot walls of said reaction chamber wherein said at least one radical source is selected from a group consisting of a hydrogen, a nitrogen, a carbon and a combination thereof, and wherein said step of creating first radicals consists of controlling a concentration level of said first radicals in said reaction chamber by controlling a ratio of an amount of said hydrocarbon gas rate and an amount of said non hydrocarbon gas rate in said reaction chamber and by controlling a temperature in said reaction chamber and wherein said temperature is controlled to be within 300-700° C. and wherein said temperature is controlled to be preferably within 500-600° C.; applying said plurality of first radicals to said prepared base material; and growing carbon nanowalls on said prepared base material based on said hydrocarbon radical, and wherein said step of growing carbon nanowalls consists of growing carbon nanowalls having irregular location and angles extended vertically to increase hydrogen storage in fuel cells on said base material.