Synthesis and characterization of reduced graphene oxide/spiky nickel nanocomposite for nanoelectronic applications


The surface modification of graphene oxide (GO) sheets with Ni nanoparticles has been a subject of intense research in order to develop new preeminent materials with increased performance for different application areas. In this work, we develop a new hydrothermal one-step method for the simple and controllable synthesis of reduced GO/nickel (GO/Ni) nanocomposites. Different reaction parameters have been investigated in order to control the synthetic process: reaction temperature, concentration of the nickel precursor and reducing agent. It was observed that the critical parameter for effective control of nickel particle size, morphology, crystalline structure and distribution at the GO surface during the reaction process was the concentration of hydrazine. The results obtained showed that control of hydrazine concentration allows obtaining crystalline metallic Ni nanoparticles, from spherical to spiky morphologies. For nanocomposites with spiky Ni nanoparticle, the reaction time allows controlling the growth of the nanothorn. The electrical properties of reduced graphene nickel nanocomposites containing spiky nickel particles showed a large resistive switching, which is essentially due to the switchable diode effect that can be used as a built-in part of graphene-based embedded electronics.



subject category

Materials Science; Physics


Salimian, M; Ivanov, M; Deepak, FL; Petrovykh, DY; Bdikin, I; Ferro, M; Kholkin, A; Titus, E; Goncalves, G

our authors


Maryam Salimian and Gil Goncalves thank the Fundacao para a Ciencia e Tecnologia (FCT) for the PhD (SFRH/BD/98337/2013) and PostDoc (SFRH/BDP/84419/2012) grants, respectively. Maxim Ivanov acknowledges FCT for his postdoctoral grant FCT UID/CTM/50011/2013. This work was developed in the scope of the project CICECO-Aveiro Institute of Materials (Ref. FCT UID/CTM/50011/2013), financed by national funds through the FCT/MEC and when applicable co-financed by FEDER under the PT2020 Partnership Agreement.

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".