▎ 摘　　要

Nitrogen-doped graphene (NG) was synthesized by denotation process at low temperature, and characterized by high-resolution transmission electron microscopy(HRTEM), X-ray photoelectron spectrometry (XPS), Raman spectrometry and X-ray diffraction(XRD). Electrochemical examinations demonstrated that in the neutral phosphate electrolyte the synthesized NG had an excellent electrocatalytic activity for oxygen reduction reaction(ORR), comparable to that of platinum catalyst(Pt/C), and its electrocatalytic stability was even better than Pt/C. When NG was used as cathode catalyst in single-chamber microbial fuel cells(MFCs), the maximal power density at external resistance of 1000 Omega was 1345 mW/m(2), and the stability of power generation in MFCs even outperformed that with Pt/C as cathode catalyst, indicating that NG might be a perfect alternative to Pt catalyst in MFCs.