The effect of different cases of hydrothermal reaction time on the structure and properties of nitrogen-doped reduced graphene oxide(NrGO)was investigated using ammonia as a nitrogen source.Scanning electron microscopy(SEM),X-ray diffraction(XRD),Raman spectroscopy(Raman),X-ray photoelectron spectroscopy(XPS),specific sur-facearea analysis(BET),and other test methods were used to characterize the morphology and structure.The results showed that the nitrogen content of NrGO increased from 7.05％to 9.22％with the increase of nitrogen doping time.Ni-trogen doping led to an increase in structural defects,an increase in micro-morphological folds and a better electrical con-ductivity of graphene,and the nitrogen bonding configurations also showed different trends.
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