Materials & Chemicals
Method To Make Flexible, Free-Standing Graphene Paper And Product Formed Thereby
Inventors: Sundaram Gunasekaran, Omer Sadak
A method to make free-standing graphene sheets and the free-standing graphene sheets so formed. The method includes the steps of exfoliating partially oxidized graphene from a carbon-containing electrode into an aqueous solution, acidifying the aqueous solution, and separating from the acidified solution partially oxidized graphene sheet. The partially oxidized graphene is then dried to yield free-standing graphene sheet having a carbon-to-oxygen ratio of at least about 8.0.
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