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A method for preparing a graphene oxide/polyaniline(GO/PANI) composite electrode was developed to investigate the effect of GO doped in PANI.PANI was first prepared by the polymerisation of aniline and then dedoped by NH_4OH to form emeraldine base(EB).The dedoped PANI and as-prepared GO were dissolved in N-methyl-2-pyrrolidone(NMP) to generate a homogeneous dispersion.The GO/PANI composites were redoped in HCI before use as electrode materials.These composites were characterised by Raman spectroscopy,X-ray diffraction,UV-vis adsorption spectroscopy,scanning electron microscopy,atomic force microscopy and electrochemical measurements.The GO/PANI composite electrode(containing 2.5%GO) has an initial gravimetric capacitance of 896 F g~(-1) at a scan rate of 5 mV s~(-1) and a retention life of 51%after 500 cycles,which is an improvement over that of pure PANI(23%).The results show that the synergy of GO and PANI attributes to the good electrochemical performance of the GO/PANI composite electrode.
PANI was first prepared by the polymerisation of aniline and then dedoped by NH_4OH to form emeraldine base (EB). The dedoped PANI and as-prepared GO were dissolved in N-methyl-2-pyrrolidone (NMP) to generate a homogeneous dispersion. The GO / PANI composites were redoped in HCI before use as electrode materials. Composites were characterized by Raman spectroscopy, X-ray diffraction, UV-vis adsorption spectroscopy, scanning electron microscopy, atomic force microscopy and electrochemical measurements. GO / PANI composite electrode (containing 2.5% GO) has an initial gravimetric capacitance of 896 F g -1 at a scan results of 5 mV s ~ (-1) and a retention life of 51% after 500 cycles, which is an improvement over that of pure PANI (23%). The results show that the synergy of GO and PANI attributes to the good electrochemical performance of the GO / PANI composite e lectrode.