▎ 摘　　要

NOVELTY - An aerogel comprises graphene oxide, where surface of graphene oxide is coated in at least one area with a conducting composite polymer. USE - An aerogel for supercapacitor for use in a device (claimed). ADVANTAGE - The method for forming graphene oxide-PVA-conducting composite polymer aerogels from coal does not release carbon dioxide into the atmosphere (as it does not require high temperatures). Graphene oxide from coal can be used to form graphene, both of which can be used with water-soluble compounds to form aerogels. The formation of graphene oxide, graphene, and their aerogels is very clean compared to other methods and, as such, has less potential impact on the environment. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) supercapacitor comprising the aerogel; (2) preparation of aerogel which involves (a) reacting an amount of coal with acid, (b) reacting product from step (a) with a base, (c) reacting product from step (b) with a high concentration of an acid, and (e) washing product from step (c) with water; and (3) method which involves applying voltage to the supercapacitor.