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A hybrid composite containing ultrathin NiCo2O4 nanobelts and graphene nanosheets was prepared through a simple and scalable hydrothermal method combined with suitable heat treatment. The optimal calcination condition has been optimized by investigating the pseudocapacitive behaviour of bare spinel NiCo2O4 prepared at different calcination temperatures. It is found that the self-assembled microstructure...
Herein, double-shelled hollow architecture composed of carbon inner shell and flower-like NiO exterior shell has been prepared through a facile hydrothermal process, followed by a heat treatment. Taking SiO2@RF (resorcinol–formaldehyde resin, RF) sphere as template, the flower-like NiSilicate shell was grown on the surface of RF during the formation of hollow inner structure. The calcination process...
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