期刊
ACS APPLIED MATERIALS & INTERFACES
卷 4, 期 2, 页码 658-664出版社
AMER CHEMICAL SOC
DOI: 10.1021/am201173z
关键词
nitrogen-doped MnO; nitrogen-doped graphene nanosheets; surface defects; anode material; lithium ion batteries
资金
- Chinese Academy of Sciences
- National Program on Key Basic Research Project of China (973 Program) [MOST2011CB935700]
- Shandong Province Fund for Distinguished Young Scientist [BS2009NJ013]
- National Natural Science Foundation of China [20971077]
Nitrogen-doped MnO/graphene nanosheets (N-MnO/GNS) hybrid material was synthesized by a simple. hydrothermal method followed by ammonia annealing. The samples were systematically investigated by X-ray diffraction analysis, Raman spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, and atomic force microscopy. N-doped MnO (N-MnO) nanoparticles were homogenously anchored on the thin layers of N-doped GNS (N-GNS) to form an efficient electronic/ionic mixed conducting network. This nanostructured hybrid exhibited a reversible electrochemical lithium storage capacity as high as 772 mAh g(-1) at 100 mA g(-1) after 90 cycles, and an excellent rate capability of 202 mA h g(-1) at a high current density of 5 A g(-1). It is expected that N-MnO/GNS hybrid could be a promising candidate material as a high capacity. anode for lithium ion batteries.
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