▎ 摘　　要

NOVELTY - Production of graphene oxide and/or graphite oxide nanoplatelet structure having a thickness of less than 100 nm in an electrochemical cell, involves passing current through the cell to intercalate the organic or non-oxidant polyatomic or polyatomic anions contained in electrolyte present in cell, into the graphitic positive electrode contained in the cell, and exfoliating the electrode. The cell comprises negative electrode which is graphite or another material. The polyatomic anions are contained in a solvent. USE - Production of graphene oxide (claimed) and/or graphite oxide nanoplatelet structure used as energy-related materials, sensors and bio-applications. ADVANTAGE - The method is a convenient, one-step/one-pot process for producing graphene oxide and/or oxide nanoplatelet structure with improved yield of up to 85% maintaining high oxidation level. The production process does not require the use of corrosive acids or oxidants, complicated handling of the reagents and products and cleaning and/or working-up of the products. The method does not require high temperature or sonication for exfoliation. The expansion of the graphite and separation of the graphitic layers is achieved by ion intercalation without the need for subsequent oxidation/reaction of the intercalated organic ions. The depletion of the organic anions and non-oxidant anions in the electrolyte by the electrochemical process is suppressed, and the electrolyte can be recovered/recycled/reused. The electrode cohesion element maintains favorable electrical contact between the electrical supply and the graphite at the positive electrode for longer time period, and enables more pervasive intercalation, exfoliation and oxidation of the graphitic electrode. DETAILED DESCRIPTION - Production of graphene oxide and/or graphite oxide nanoplatelet structure having a thickness of less than 100 nm in an electrochemical cell, involves passing current through the cell to intercalate the organic or non-oxidant polyatomic or polyatomic anions contained in electrolyte present in cell, into the graphitic positive electrode contained in the cell, and exfoliating the electrode. The cell comprises negative electrode which is graphite or another material. The polyatomic anions are contained in a solvent, and the electrolyte has hydrogen ion concentration of less than 1x 10-1 mol/dm3. An INDEPENDENT CLAIM is included for use of organic anions and non-oxidant polyatomic anions for the production of graphene oxide and/or graphite oxide nanoplatelet structure.