Use of carbon nanomaterials produced with low carbon footprint to produce composites with low CO2 emission

A method of forming a composite material, comprising steps of:

• providing a high carbon footprint substance that is a metal;
• providing a carbon nanomaterial produced with a negative carbon-footprint indicating a net consumption of carbon dioxide during the production of the carbon nanomaterial;
• and
• forming a composite comprising the high carbon footprint substance and from 0.001 wt % to 25 wt % of the carbon nanomaterial by one of:
• a. heating the high carbon footprint substance and adding the carbon nanomaterial thereto;
• b. coating one or more individual particles of the carbon nanomaterial with a second metal and adding the coated carbon nanomaterial to the high carbon footprint material for providing an interface between the coated carbon nanomaterial and the metal;
• c. mixing a powder of the metal and a powder of the carbon nanomaterial and sintering the powder mixture;
• and
• d. making a suspension of the carbon nanomaterial in a solvent and mixing the suspension with a powder of the metal, treating the mixture of the suspension and the metal powder to form a powder mixture of the carbon nanomaterial and the metal,
• wherein the carbon nanomaterial is dispersed in the composite material to reduce the carbon dioxide emission for producing the composite material relative to the high carbon footprint substance.