Electrosprayed graphene decorated with ZnO nanoparticles for supercapacitors
作者： Edmund Samuel , Priyanka U Londhe , Bhavana Joshi , Min-Woo Kim , Karam Kim
DOI: 10.1016/J.JALLCOM.2017.12.320
关键词: Capacitance 、 Nanocomposite 、 Composite number 、 Materials science 、 Scanning electron microscope 、 Graphene 、 Supercapacitor 、 Diffraction 、 Chemical engineering 、 Power density 、 Mechanical engineering 、 Materials Chemistry 、 Mechanics of Materials 、 Metals and Alloys
摘要: Abstract A binder-free nanocomposite consisting of ZnO nanoparticles (NPs) grown directly on graphene sheets by electrospraying was fabricated for use as an electrode material in supercapacitors. The optimal concentrations and NPs were determined from the capacitive characteristics composite. Scanning electron microscopy confirmed that grew a uniformly distributed manner they exhibited negligible agglomeration. Further, X-ray diffraction analysis growth preferentially oriented along (100) plane ZnO/graphene symmetric supercapacitor using this composite energy density 67 mWh·cm−3 power 6000 mW·cm−3. also showed good long-term cycling performance, retaining 90% its capacitance after 1000 galvanostatic charge/discharge cycles.
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