氧化铁纳米颗粒和多孔碳纳米纤维复合物的制备和显微结构表征

氧化铁纳米颗粒和多孔碳纳米纤维复合物的制备和显微结构表征

闫星旭，方  芳，罗  俊，朱  静^*

（北京电子显微镜中心，新型陶瓷和先进工艺国家重点实验室，先进材料教育部重点实验室，清华大学材料学院，北京 100084）

摘 要：本文报道一种利用水蒸气处理获得氧化铁纳米颗粒和多孔碳纳米纤维复合物的新型制备方法。通过透射电镜和元素面分布等显微分析方法，作者发现样品中存在γ-Fe₂O₃纳米颗粒和多孔碳纳米纤维结构，并且二者结合紧密，该结构有利于电化学反应过程。相比化学溶液合成方法，本文的制备工艺简单可控。此外，该方法可以推广制备多种金属氧化物和碳纳米结构复合物，而这些复合物可以应用于超级电容器、锂离子电池、燃料电池以及电解水等新型能源器件中。

关键词：氧化铁纳米颗粒；多孔碳纳米纤维；电纺丝；水蒸气；刻蚀处理

中图分类号：O614.81⁺1；TB383；TG115.21⁺5.3   文献标识码：A   doi:10.3969/j.issn.1000-6281.2015.05.001

Synthesis and microscopy analysis of iron oxide nanoparticle and porous carbon nanofiber composites

YAN Xing-xu, FANG Fang, LUO Jun, ZHU Jing*

(National Center for Electron Microscopy in Beijing，The State Key Laboratory of New Ceramics and Fine Processing，Key Laboratory of Advanced Materials (MOE)，School of Materials Science and Engineering, Tsinghua University，Beijing 100084, China)

Abstract:We reported a novel method to synthesize iron oxide nanoparticle and porous carbon nanofiber composite by water vapor etching treatment. Utilizing microscopy analysis of transmission electron microscopy and element mapping results，γ-Fe₂O₃ nanoparticles were formed in the sample and bound tightly to porous carbon nanofibers, which was beneficial to electrochemical reaction process. Compared with chemical synthesis in solution, our method is more facile and controllable. Furthermore, this method could be extended to synthesize more kinds of metal oxide and carbon nano-structure composites, which could be applied in emerging energy devices, such as supercapacitor, Li-ion battery, fuel cell and water splitting.

Keywords:iron oxide nanoparticles；porous carbon nanofibers；water vapor；etching treatment；microscopy analysis

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