▎ 摘　　要

NOVELTY - The film has a substrate reformed with negative charge harrow. Positive and negative charge polymer electrolyte layers are formed on the substrate at 20 times. Positive and negative charge graphene oxide layers are formed on the positive and negative charge polymer electrolyte layers at 10 times. The positive charge polymer is selected from a group consisting of poly-diallyldimethylammonium chloride, polyallylamine hydrochloride and branched polyethylenimine. The negative charge polymer is selected from a group consisting of polystyrene sulfonate and polyacrylic acid. USE - Multi-layer nano-thin film for a carbon dioxide separation film (claimed) utilized in different products. Uses include but are not limited to a seawater desalination filter, an electrode for battery, a solar cell and a flexible display. ADVANTAGE - The film laminates graphene oxide and polyelectrolyte on a surface of the substrate so as to maintain permeability of carbon dioxide gas. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a multi-layer nano-thin film manufacturing method. DESCRIPTION OF DRAWING(S) - The drawing shows a graphical view illustrating relationship between permeability and selectivity of carbon dioxide of a multi-layer nano-thin film.