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Electrostatic assembly of ultraviolet-curable cellulose-coated silver nanowires as transparent electrodes for nanogenerator

In this study, an electrostatically assisted dip-coating process was proposed by employing amino-modified zinc-oxide nanoparticles (NH2-ZnONPs) as an assistance layer to attract intrinsically negatively charged silver nanowires (AgNWs), which significantly alleviated the aggregation of AgNWs and improved the deposition efficiency. The uniform AgNW/ZnONP was further capped with an eco-friendly ultraviolet-curable cellulose to provide the film with a good water resistance, strong adhesion, and excellent anti-oxidation. Furthermore, a triboelectric generator was demonstrated using the AgNW-composite electrodes, verifying the applicability of the electrode. The electrostatic coating technique and tailored hydroxy propyl methyl cellulose (HPMC) are potentially applicable to other metal nanowires.