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Preparation of Graphene Conductive Ink and Conductive Properties of Paper Base Circuit |
Received:November 19, 2020 |
DOI:10.11980/j.issn.0254-508X.2021.03.003 |
Key Words:graphene conductive ink paper base circuit flexible electronic |
Fund Project:广州市珠江科技新星专项(201806010141)。 |
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Abstract:Graphene conductive ink was prepared with graphene as conductive filler and sodium dodecyl sulfonate (SDS) as adjusting agent. Based on studying the performance of the ink, a paper-based flexible circuit was prepared by the scribing method, the behavior of the ink on the paper-based surface and the conductivity of paper-based circuit were studied. The results showed that SDS could effectively adjust the surface tension and viscosity of the graphene conductive ink. When the dosage of SDS was 0.2 mg/mL, graphene conductive ink had a surface tension of 39.89 mN/m, a viscosity of 9.03 mPa·s, and a square resistance of 179.81 Ω/sq. The paper-based circuit prepared from graphene conductive ink had excellent conductivity, flexibility and stable electrical conductivity. When the length of circuit was 5 cm, its conductivity was 2.81×102 S/m. Moreover, the paper-based circuit could still make a diode bright in the conductive path after bending 180° or kneading. |
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