Patent ID: 9216435
Filing Date: 2015-12-22
Classification: B05D,B82Y,C01B,C01P,H01B,Y10T

Abstract:
1. A method for the preparation of graphene or graphenic materials films on non-metal substrates comprising the following stages: preparation of an aqueous solution of a non-crystallizable water-soluble biopolymer capable of forming hydrogels, or a derivative of said biopolymer, coating of the substrate with the aqueous solution of the biopolymer prepared in the previous stage, conditioning of the aqueous solution of the biopolymer by means of a hydrothermal process wherein the coated surface is subjected to a flow of nitrogen saturated with water vapor at the temperature of between 100 and 250° C. for at least 30 minutes, thermal decomposition of the biopolymer deposited on the substrate in the absence of oxygen at temperatures equal to or below 1200° C. to form the graphene or graphenic material film.