Reduced Graphene Oxide Bridging Oriented Copper Nanowires for a Flexible, Annealing-Free and Air-Stable Electrode

Abstract

One-dimensional flexible conductive nanowires (NWs) are highly potential in the next-generation flexible devices. However, the unavoidable challenge is how to keep high conductivity, flexibility, and durability with economically feasible materials in a simple manufacturing process. Here, a straightforward solvothermal method is used to fabricate a flexible and conductive composite that contains reduced graphene oxide (RGO) nanosheets bridging oriented copper NWs. The GO-supporting way can successfully solve the problems listed above and help the composite films preserve good conductivity and durable flexibility without annealing or acid treatments. The Cu NW-RGO film under ambient conditions shows a high electrical property (0.808 Ω/sq) without any significant changes more than 30 days. Furthermore, it can be covered on polyester cloth as a lightweight flexible electrode with good durability and uncomplicated processability, which are highly promising in kinds of electronic devices