| 摘要 |
A method of producing a printable conductive ink comprising forming a mixture of a first composition comprising at least one amine; a second composition comprising at least one carboxylic acid and a conductive material. Typically, reaction between the first and second compositions is exothermic and the mixture is allowed to cool to a transparent viscous liquid prior to adding the conductive material. The conductive material may be incorporated in an amount of 5-15 wt% based on the weight of the mixture and preferably comprises silver nanowires optionally coated with a dispersant, such as polyvinylpyrrolidone. The conductive material is usually added with stirring, whereupon the mixture may be sonicated for at least 30 minutes. The at least one amine is preferably a primary amine or carbon-bridged diamine. The carboxylic acid may be a carbon-bridged dicarboxylic acid. A method of forming printed electrodes is also disclosed, which comprises printing a pattern onto a substrate using the conductive ink, followed by heating the substrate to vaporise any liquid. The substrate may be coated with polyvinylpyrrolidone beforehand. Also disclosed are a printable conductive ink and a printed conductive electrode manufactured according to the methods above. |
