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1000Ω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.
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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2014年第4期825-830,共6页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:51108332)
江苏省自然科学基金(批准号:BK2011416)资助~~
关键词
微生物燃料电池
氧还原反应
氮掺杂石墨烯
阴极催化剂
Microbial fuel cell
Oxygen reduction reaction
Nitrogen-doped graphene
Cathode catalyst
