Electrochemical Process for Producing Graphene, Graphene Oxide, Metal Composites, and Coated Substrates

摘要

A process and system for the electrochemical production of graphene, graphene oxide, graphene quantum dots, graphene/graphene oxide metal composites, graphene/graphene oxide coated substrates and graphene/graphene oxide metal composite coated substrates in a single step process involving no secondary purifications utilizes an electrochemical cell containing electrodes with variable gaps including a zero gap, containing an anode electrode including graphite, a cathode electrode including electrically conductive material with an electrolyte-free electrochemical bath including water and an organic liquid that produces joule heating along with oxygen embrittlement.

主权项

1. An electrochemical process for producing graphene/graphene oxide comprising:
immersing in an electrolyte-free electrochemical bath, comprising water and an organic liquid, an anode electrode comprising graphite and a cathode electrode comprising an electrically conductive material; and applying an electrical potential between the anode and the cathode, sufficient to cause Joule heating and oxidation of the water and cleavage of graphene by embrittlement from the graphite of the anode forming graphene/graphene oxide and at least one of convective migration and electrical migration of the cleaved graphene in the bath.