Folded graphene/copper oxide hybrid aerogels: folding, self-reinforcement, and electrochemical performance

In our previous work, the Origami and enhancement theory was introduced into the construction of graphene aerogels to achieve the self-enhancement effect of graphene aerogels through the folding process of graphene lamellae. Based on the above work, after the graphene lamination was folded by Cu ion, it was further converted to cupric oxide by in situ mode, thus participating in the enhancement of the electrochemical behavior of graphene aerogels, and the "folding—enhanced—electrochemical" multiple effects were obtained. The innovation of this article was to use copper ions to achieve the folding of graphene sheet, and convert copper ions into copper oxides to improve the electrochemical properties of graphene aerogels, thereby achieving self-enhancement and electrochemical applications of graphene aerogels.The molecular structure and elemental composition of fGA/CuO were studied by FTIR and XPS. The surface microstructure of fGA/CuO was studied by SEM and bet. The results showed that fGA/CuO was successfully prepared with small and round micropores on the surface.The mechanical and electrochemical properties of fGA/CuO were studied by mechanical properties test, CV, GCD, and EIS tests. The results show that fGA/CuO has good mechanical and electrochemical properties.