中文摘要：

利用爆炸法低温合成了氮掺杂石墨烯（NG）,并通过高分辨透射电子显微镜、 X射线光电子能谱仪、Raman光谱仪以及X射线衍射仪对其进行了表征.电化学性能检测结果表明,所合成的NG在中性磷酸盐电解液中具有优异的氧还原催化活性,完全能够与贵重金属铂催化剂（ Pt/C）相媲美,氧还原催化稳定性甚至优于Pt/C.当NG用作微生物燃料电池（ MFCs）的阴极氧还原催化剂时,在外阻为1000赘情况下, MFCs的最大功率密度为1345 mW/m2,产电稳定性优于以Pt/C为阴极催化剂的MFCs,可以成为Pt催化剂的理想替代品.

英文摘要：

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 reduc-tion 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 was 1345 mW/m2 , and the stability of power genera-tion in MFCs even outperformed that with Pt/C as cathode catalyst, indicating that NG might be a perfect al-ternative to Pt catalyst in MFCs.