新型炭材料2012，Vol.27Issue(4)：258-265,8.
氮掺杂石墨烯的制备及其电催化氧气还原性能
Synthesis of nitrogen-doped graphene and its catalytic activity for the oxygen reduction reaction in fuel cells
马贵香 1赵江红 2郑剑锋 1朱珍平1
作者信息
- 1. 中国科学院山西煤炭化学研究所煤转化国家重点实验室,山西太原030001
- 2. 中国科学院研究生院,北京100049
- 折叠
摘要
Abstract
Graphene was synthesized by the detonation-assisted reduction of graphite oxide (GO) prepared by the modified Hummers method. Nitrogen-doped reduced GO(N-RGO)was obtained through an in-situnitrogen-doping during detonation. The morphology, elemental composition and structure of the N-RGO were characterized by TEM, SEM, IR, XPS, XRD and Raman spectroscopy. The catalytic activity of the N-RGO as a fuel cell electrode for the oxygen reduction reaction (ORR) was investigated by a rotating ring disk electrode technique. Results showed that the GO was exfoliated and reduced to few layer graphene by the detonation. The oxygen-containing species of GO were reduced and the C/O molar ratio was increased to 26.2, which is much higher than for RGO. Nitrogen, as high as 2.11 at% , was incorporated into the graphene structure. The diffusion-limited current for ORR increased from 0.24 mA for RGO to 0.49 mA for N-RGO, indicating a higher catalytic activity of N-RGO for ORR than that of RGO.关键词
爆炸/氧化石墨/氮掺杂石墨烯/氧气还原Key words
Detonation/ Graphite oxide/ Nitrogen-doped graphene/ Oxygen reduction
分类
通用工业技术引用本文复制引用
马贵香,赵江红,郑剑锋,朱珍平..氮掺杂石墨烯的制备及其电催化氧气还原性能[J].新型炭材料,2012,27(4):258-265,8.
